/* Target-dependent code for Hitachi Super-H, for GDB.
- Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
+ Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include "frame.h"
-#include "obstack.h"
+#include "frame-base.h"
+#include "frame-unwind.h"
+#include "dwarf2-frame.h"
#include "symtab.h"
#include "symfile.h"
#include "gdbtypes.h"
#include "gdbcore.h"
#include "value.h"
#include "dis-asm.h"
-#include "inferior.h" /* for BEFORE_TEXT_END etc. */
+#include "inferior.h"
#include "gdb_string.h"
+#include "gdb_assert.h"
#include "arch-utils.h"
#include "floatformat.h"
#include "regcache.h"
#include "doublest.h"
+#include "osabi.h"
-#include "elf-bfd.h"
+#include "sh-tdep.h"
+#include "elf-bfd.h"
#include "solib-svr4.h"
-void (*sh_show_regs) (void);
-CORE_ADDR (*skip_prologue_hard_way) (CORE_ADDR);
-void (*do_pseudo_register) (int);
+/* sh flags */
+#include "elf/sh.h"
+/* registers numbers shared with the simulator */
+#include "gdb/sim-sh.h"
-#define SH_DEFAULT_NUM_REGS 59
+static void (*sh_show_regs) (void);
-/* Define other aspects of the stack frame.
- we keep a copy of the worked out return pc lying around, since it
- is a useful bit of info */
-
-struct frame_extra_info
+#define SH_NUM_REGS 59
+
+struct sh_frame_cache
{
- CORE_ADDR return_pc;
- int leaf_function;
- int f_offset;
+ /* Base address. */
+ CORE_ADDR base;
+ LONGEST sp_offset;
+ CORE_ADDR pc;
+
+ /* Flag showing that a frame has been created in the prologue code. */
+ int uses_fp;
+
+ /* Saved registers. */
+ CORE_ADDR saved_regs[SH_NUM_REGS];
+ CORE_ADDR saved_sp;
};
-static char *
+static const char *
sh_generic_register_name (int reg_nr)
{
- static char *register_names[] =
- {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ static char *register_names[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
"fpul", "fpscr",
- "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
- "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
- "ssr", "spc",
+ "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
+ "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
+ "ssr", "spc",
"r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0",
"r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1",
};
return register_names[reg_nr];
}
-static char *
+static const char *
sh_sh_register_name (int reg_nr)
{
- static char *register_names[] =
- {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
- "", "",
- "", "", "", "", "", "", "", "",
- "", "", "", "", "", "", "", "",
- "", "",
- "", "", "", "", "", "", "", "",
- "", "", "", "", "", "", "", "",
+ static char *register_names[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
};
if (reg_nr < 0)
return NULL;
return register_names[reg_nr];
}
-static char *
+static const char *
sh_sh3_register_name (int reg_nr)
{
- static char *register_names[] =
- {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
- "", "",
- "", "", "", "", "", "", "", "",
- "", "", "", "", "", "", "", "",
- "ssr", "spc",
+ static char *register_names[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "ssr", "spc",
"r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0",
"r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1"
};
return register_names[reg_nr];
}
-static char *
+static const char *
sh_sh3e_register_name (int reg_nr)
{
- static char *register_names[] =
- {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ static char *register_names[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
"fpul", "fpscr",
- "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
- "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
- "ssr", "spc",
+ "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
+ "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
+ "ssr", "spc",
"r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0",
"r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1",
};
return register_names[reg_nr];
}
-static char *
+static const char *
+sh_sh2e_register_name (int reg_nr)
+{
+ static char *register_names[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ "fpul", "fpscr",
+ "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
+ "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
+ "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ };
+ if (reg_nr < 0)
+ return NULL;
+ if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
+ return NULL;
+ return register_names[reg_nr];
+}
+
+static const char *
sh_sh_dsp_register_name (int reg_nr)
{
- static char *register_names[] =
- {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
- "", "dsr",
- "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1",
- "y0", "y1", "", "", "", "", "", "mod",
- "", "",
- "rs", "re", "", "", "", "", "", "",
- "", "", "", "", "", "", "", "",
+ static char *register_names[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ "", "dsr",
+ "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1",
+ "y0", "y1", "", "", "", "", "", "mod",
+ "", "",
+ "rs", "re", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
};
if (reg_nr < 0)
return NULL;
return register_names[reg_nr];
}
-static char *
+static const char *
sh_sh3_dsp_register_name (int reg_nr)
{
- static char *register_names[] =
- {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
- "", "dsr",
- "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1",
- "y0", "y1", "", "", "", "", "", "mod",
- "ssr", "spc",
- "rs", "re", "", "", "", "", "", "",
- "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b"
- "", "", "", "", "", "", "", "",
+ static char *register_names[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ "", "dsr",
+ "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1",
+ "y0", "y1", "", "", "", "", "", "mod",
+ "ssr", "spc",
+ "rs", "re", "", "", "", "", "", "",
+ "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b"
+ "", "", "", "", "", "", "", "",
};
if (reg_nr < 0)
return NULL;
return register_names[reg_nr];
}
-static char *
+static const char *
sh_sh4_register_name (int reg_nr)
{
- static char *register_names[] =
- {
+ static char *register_names[] = {
/* general registers 0-15 */
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
/* 16 - 22 */
- "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
/* 23, 24 */
"fpul", "fpscr",
/* floating point registers 25 - 40 */
- "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
- "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
+ "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
+ "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
/* 41, 42 */
- "ssr", "spc",
+ "ssr", "spc",
/* bank 0 43 - 50 */
"r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0",
/* bank 1 51 - 58 */
"r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1",
/* double precision (pseudo) 59 - 66 */
- "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14",
+ "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14",
/* vectors (pseudo) 67 - 70 */
- "fv0", "fv4", "fv8", "fv12",
+ "fv0", "fv4", "fv8", "fv12",
/* FIXME: missing XF 71 - 86 */
/* FIXME: missing XD 87 - 94 */
};
sh_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
{
/* 0xc3c3 is trapa #c3, and it works in big and little endian modes */
- static unsigned char breakpoint[] = {0xc3, 0xc3};
-
+ static unsigned char breakpoint[] = { 0xc3, 0xc3 };
+
*lenptr = sizeof (breakpoint);
return breakpoint;
}
+static CORE_ADDR
+sh_push_dummy_code (struct gdbarch *gdbarch,
+ CORE_ADDR sp, CORE_ADDR funaddr, int using_gcc,
+ struct value **args, int nargs,
+ struct type *value_type,
+ CORE_ADDR *real_pc, CORE_ADDR *bp_addr)
+{
+ /* Allocate space sufficient for a breakpoint. */
+ sp = (sp - 2) & ~1;
+ /* Store the address of that breakpoint */
+ *bp_addr = sp;
+ /* sh always starts the call at the callee's entry point. */
+ *real_pc = funaddr;
+ return sp;
+}
+
/* Prologue looks like
- [mov.l <regs>,@-r15]...
- [sts.l pr,@-r15]
- [mov.l r14,@-r15]
- [mov r15,r14]
-
- Actually it can be more complicated than this. For instance, with
- newer gcc's:
-
- mov.l r14,@-r15
- add #-12,r15
- mov r15,r14
- mov r4,r1
- mov r5,r2
- mov.l r6,@(4,r14)
- mov.l r7,@(8,r14)
- mov.b r1,@r14
- mov r14,r1
- mov r14,r1
- add #2,r1
- mov.w r2,@r1
+ mov.l r14,@-r15
+ sts.l pr,@-r15
+ mov.l <regs>,@-r15
+ sub <room_for_loca_vars>,r15
+ mov r15,r14
+ Actually it can be more complicated than this but that's it, basically.
*/
+#define GET_SOURCE_REG(x) (((x) >> 4) & 0xf)
+#define GET_TARGET_REG(x) (((x) >> 8) & 0xf)
+
/* STS.L PR,@-r15 0100111100100010
r15-4-->r15, PR-->(r15) */
#define IS_STS(x) ((x) == 0x4f22)
r15-4-->r15, Rm-->(R15) */
#define IS_PUSH(x) (((x) & 0xff0f) == 0x2f06)
-#define GET_PUSHED_REG(x) (((x) >> 4) & 0xf)
-
/* MOV r15,r14 0110111011110011
r15-->r14 */
#define IS_MOV_SP_FP(x) ((x) == 0x6ef3)
/* ADD #imm,r15 01111111iiiiiiii
r15+imm-->r15 */
-#define IS_ADD_SP(x) (((x) & 0xff00) == 0x7f00)
+#define IS_ADD_IMM_SP(x) (((x) & 0xff00) == 0x7f00)
#define IS_MOV_R3(x) (((x) & 0xff00) == 0x1a00)
#define IS_SHLL_R3(x) ((x) == 0x4300)
/* FMOV.S FRm,@-Rn Rn-4-->Rn, FRm-->(Rn) 1111nnnnmmmm1011
FMOV DRm,@-Rn Rn-8-->Rn, DRm-->(Rn) 1111nnnnmmm01011
FMOV XDm,@-Rn Rn-8-->Rn, XDm-->(Rn) 1111nnnnmmm11011 */
-#define IS_FMOV(x) (((x) & 0xf00f) == 0xf00b)
-
-/* MOV Rm,Rn Rm-->Rn 0110nnnnmmmm0011
- MOV.L Rm,@(disp,Rn) Rm-->(dispx4+Rn) 0001nnnnmmmmdddd
- MOV.L Rm,@Rn Rm-->(Rn) 0010nnnnmmmm0010
- where Rm is one of r4,r5,r6,r7 which are the argument registers. */
-#define IS_ARG_MOV(x) \
-(((((x) & 0xf00f) == 0x6003) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) \
- || ((((x) & 0xf000) == 0x1000) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) \
- || ((((x) & 0xf00f) == 0x2002) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)))
-
-/* MOV.L Rm,@(disp,r14) 00011110mmmmdddd
- Rm-->(dispx4+r14) where Rm is one of r4,r5,r6,r7 */
-#define IS_MOV_TO_R14(x) \
- ((((x) & 0xff00) == 0x1e) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070))
-
-#define FPSCR_SZ (1 << 20)
-
-/* Skip any prologue before the guts of a function */
-
-/* Skip the prologue using the debug information. If this fails we'll
- fall back on the 'guess' method below. */
-static CORE_ADDR
-after_prologue (CORE_ADDR pc)
-{
- struct symtab_and_line sal;
- CORE_ADDR func_addr, func_end;
+/* CV, 2003-08-28: Only suitable with Rn == SP, therefore name changed to
+ make this entirely clear. */
+/* #define IS_FMOV(x) (((x) & 0xf00f) == 0xf00b) */
+#define IS_FPUSH(x) (((x) & 0xff0f) == 0xff0b)
+
+/* MOV Rm,Rn Rm-->Rn 0110nnnnmmmm0011 4 <= m <= 7 */
+#define IS_MOV_ARG_TO_REG(x) \
+ (((x) & 0xf00f) == 0x6003 && \
+ ((x) & 0x00f0) >= 0x0040 && \
+ ((x) & 0x00f0) <= 0x0070)
+/* MOV.L Rm,@Rn 0010nnnnmmmm0010 n = 14, 4 <= m <= 7 */
+#define IS_MOV_ARG_TO_IND_R14(x) \
+ (((x) & 0xff0f) == 0x2e02 && \
+ ((x) & 0x00f0) >= 0x0040 && \
+ ((x) & 0x00f0) <= 0x0070)
+/* MOV.L Rm,@(disp*4,Rn) 00011110mmmmdddd n = 14, 4 <= m <= 7 */
+#define IS_MOV_ARG_TO_IND_R14_WITH_DISP(x) \
+ (((x) & 0xff00) == 0x1e00 && \
+ ((x) & 0x00f0) >= 0x0040 && \
+ ((x) & 0x00f0) <= 0x0070)
+
+/* MOV.W @(disp*2,PC),Rn 1001nnnndddddddd */
+#define IS_MOVW_PCREL_TO_REG(x) (((x) & 0xf000) == 0x9000)
+/* MOV.L @(disp*4,PC),Rn 1101nnnndddddddd */
+#define IS_MOVL_PCREL_TO_REG(x) (((x) & 0xf000) == 0xd000)
+/* SUB Rn,R15 00111111nnnn1000 */
+#define IS_SUB_REG_FROM_SP(x) (((x) & 0xff0f) == 0x3f08)
- /* If we can not find the symbol in the partial symbol table, then
- there is no hope we can determine the function's start address
- with this code. */
- if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end))
- return 0;
-
- /* Get the line associated with FUNC_ADDR. */
- sal = find_pc_line (func_addr, 0);
-
- /* There are only two cases to consider. First, the end of the source line
- is within the function bounds. In that case we return the end of the
- source line. Second is the end of the source line extends beyond the
- bounds of the current function. We need to use the slow code to
- examine instructions in that case. */
- if (sal.end < func_end)
- return sal.end;
- else
- return 0;
-}
-
-/* Here we look at each instruction in the function, and try to guess
- where the prologue ends. Unfortunately this is not always
- accurate. */
-static CORE_ADDR
-sh_skip_prologue_hard_way (CORE_ADDR start_pc)
-{
- CORE_ADDR here, end;
- int updated_fp = 0;
-
- if (!start_pc)
- return 0;
-
- for (here = start_pc, end = start_pc + (2 * 28); here < end;)
- {
- int w = read_memory_integer (here, 2);
- here += 2;
- if (IS_FMOV (w) || IS_PUSH (w) || IS_STS (w) || IS_MOV_R3 (w)
- || IS_ADD_R3SP (w) || IS_ADD_SP (w) || IS_SHLL_R3 (w)
- || IS_ARG_MOV (w) || IS_MOV_TO_R14 (w))
- {
- start_pc = here;
- }
- else if (IS_MOV_SP_FP (w))
- {
- start_pc = here;
- updated_fp = 1;
- }
- else
- /* Don't bail out yet, if we are before the copy of sp. */
- if (updated_fp)
- break;
- }
-
- return start_pc;
-}
-
-static CORE_ADDR
-sh_skip_prologue (CORE_ADDR pc)
-{
- CORE_ADDR post_prologue_pc;
-
- /* See if we can determine the end of the prologue via the symbol table.
- If so, then return either PC, or the PC after the prologue, whichever
- is greater. */
- post_prologue_pc = after_prologue (pc);
-
- /* If after_prologue returned a useful address, then use it. Else
- fall back on the instruction skipping code. */
- if (post_prologue_pc != 0)
- return max (pc, post_prologue_pc);
- else
- return (skip_prologue_hard_way (pc));
-}
-
-/* Immediately after a function call, return the saved pc.
- Can't always go through the frames for this because on some machines
- the new frame is not set up until the new function executes
- some instructions.
-
- The return address is the value saved in the PR register + 4 */
-static CORE_ADDR
-sh_saved_pc_after_call (struct frame_info *frame)
-{
- return (ADDR_BITS_REMOVE (read_register (gdbarch_tdep (current_gdbarch)->PR_REGNUM)));
-}
-
-/* Should call_function allocate stack space for a struct return? */
-static int
-sh_use_struct_convention (int gcc_p, struct type *type)
-{
- return (TYPE_LENGTH (type) > 1);
-}
+#define FPSCR_SZ (1 << 20)
-/* Store the address of the place in which to copy the structure the
- subroutine will return. This is called from call_function.
-
- We store structs through a pointer passed in R2 */
-static void
-sh_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
-{
- write_register (STRUCT_RETURN_REGNUM, (addr));
-}
+/* The following instructions are used for epilogue testing. */
+#define IS_RESTORE_FP(x) ((x) == 0x6ef6)
+#define IS_RTS(x) ((x) == 0x000b)
+#define IS_LDS(x) ((x) == 0x4f26)
+#define IS_MOV_FP_SP(x) ((x) == 0x6fe3)
+#define IS_ADD_REG_TO_FP(x) (((x) & 0xff0f) == 0x3e0c)
+#define IS_ADD_IMM_FP(x) (((x) & 0xff00) == 0x7e00)
/* Disassemble an instruction. */
static int
-gdb_print_insn_sh (bfd_vma memaddr, disassemble_info *info)
+gdb_print_insn_sh (bfd_vma memaddr, disassemble_info * info)
{
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- return print_insn_sh (memaddr, info);
- else
- return print_insn_shl (memaddr, info);
+ info->endian = TARGET_BYTE_ORDER;
+ return print_insn_sh (memaddr, info);
}
-/* Given a GDB frame, determine the address of the calling function's frame.
- This will be used to create a new GDB frame struct, and then
- INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame.
-
- For us, the frame address is its stack pointer value, so we look up
- the function prologue to determine the caller's sp value, and return it. */
static CORE_ADDR
-sh_frame_chain (struct frame_info *frame)
+sh_analyze_prologue (CORE_ADDR pc, CORE_ADDR current_pc,
+ struct sh_frame_cache *cache)
{
- if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
- return frame->frame; /* dummy frame same as caller's frame */
- if (frame->pc && !inside_entry_file (frame->pc))
- return read_memory_integer (FRAME_FP (frame) + frame->extra_info->f_offset, 4);
- else
- return 0;
-}
-
-/* Find REGNUM on the stack. Otherwise, it's in an active register. One thing
- we might want to do here is to check REGNUM against the clobber mask, and
- somehow flag it as invalid if it isn't saved on the stack somewhere. This
- would provide a graceful failure mode when trying to get the value of
- caller-saves registers for an inner frame. */
-static CORE_ADDR
-sh_find_callers_reg (struct frame_info *fi, int regnum)
-{
- for (; fi; fi = fi->next)
- if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
- /* When the caller requests PR from the dummy frame, we return PC because
- that's where the previous routine appears to have done a call from. */
- return generic_read_register_dummy (fi->pc, fi->frame, regnum);
- else
- {
- FRAME_INIT_SAVED_REGS (fi);
- if (!fi->pc)
- return 0;
- if (fi->saved_regs[regnum] != 0)
- return read_memory_integer (fi->saved_regs[regnum],
- REGISTER_RAW_SIZE (regnum));
- }
- return read_register (regnum);
-}
-
-/* Put here the code to store, into a struct frame_saved_regs, the
- addresses of the saved registers of frame described by FRAME_INFO.
- This includes special registers such as pc and fp saved in special
- ways in the stack frame. sp is even more special: the address we
- return for it IS the sp for the next frame. */
-static void
-sh_nofp_frame_init_saved_regs (struct frame_info *fi)
-{
- int *where = (int *) alloca ((NUM_REGS + NUM_PSEUDO_REGS) * sizeof(int));
- int rn;
- int have_fp = 0;
- int depth;
- int pc;
- int opc;
- int insn;
+ ULONGEST inst;
+ CORE_ADDR opc;
+ int offset;
+ int sav_offset = 0;
int r3_val = 0;
- char *dummy_regs = generic_find_dummy_frame (fi->pc, fi->frame);
-
- if (fi->saved_regs == NULL)
- frame_saved_regs_zalloc (fi);
- else
- memset (fi->saved_regs, 0, SIZEOF_FRAME_SAVED_REGS);
-
- if (dummy_regs)
- {
- /* DANGER! This is ONLY going to work if the char buffer format of
- the saved registers is byte-for-byte identical to the
- CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */
- memcpy (fi->saved_regs, dummy_regs, sizeof (fi->saved_regs));
- return;
- }
-
- fi->extra_info->leaf_function = 1;
- fi->extra_info->f_offset = 0;
-
- for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++)
- where[rn] = -1;
+ int reg, sav_reg = -1;
- depth = 0;
-
- /* Loop around examining the prologue insns until we find something
- that does not appear to be part of the prologue. But give up
- after 20 of them, since we're getting silly then. */
-
- pc = get_pc_function_start (fi->pc);
- if (!pc)
- {
- fi->pc = 0;
- return;
- }
+ if (pc >= current_pc)
+ return current_pc;
+ cache->uses_fp = 0;
for (opc = pc + (2 * 28); pc < opc; pc += 2)
{
- insn = read_memory_integer (pc, 2);
+ inst = read_memory_unsigned_integer (pc, 2);
/* See where the registers will be saved to */
- if (IS_PUSH (insn))
+ if (IS_PUSH (inst))
{
- rn = GET_PUSHED_REG (insn);
- where[rn] = depth;
- depth += 4;
+ cache->saved_regs[GET_SOURCE_REG (inst)] = cache->sp_offset;
+ cache->sp_offset += 4;
}
- else if (IS_STS (insn))
+ else if (IS_STS (inst))
{
- where[gdbarch_tdep (current_gdbarch)->PR_REGNUM] = depth;
- /* If we're storing the pr then this isn't a leaf */
- fi->extra_info->leaf_function = 0;
- depth += 4;
+ cache->saved_regs[PR_REGNUM] = cache->sp_offset;
+ cache->sp_offset += 4;
}
- else if (IS_MOV_R3 (insn))
+ else if (IS_MOV_R3 (inst))
{
- r3_val = ((insn & 0xff) ^ 0x80) - 0x80;
+ r3_val = ((inst & 0xff) ^ 0x80) - 0x80;
}
- else if (IS_SHLL_R3 (insn))
+ else if (IS_SHLL_R3 (inst))
{
r3_val <<= 1;
}
- else if (IS_ADD_R3SP (insn))
+ else if (IS_ADD_R3SP (inst))
{
- depth += -r3_val;
+ cache->sp_offset += -r3_val;
}
- else if (IS_ADD_SP (insn))
+ else if (IS_ADD_IMM_SP (inst))
{
- depth -= ((insn & 0xff) ^ 0x80) - 0x80;
- }
- else if (IS_MOV_SP_FP (insn))
- break;
-#if 0 /* This used to just stop when it found an instruction that
- was not considered part of the prologue. Now, we just
- keep going looking for likely instructions. */
- else
- break;
-#endif
- }
-
- /* Now we know how deep things are, we can work out their addresses */
-
- for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++)
- {
- if (where[rn] >= 0)
- {
- if (rn == FP_REGNUM)
- have_fp = 1;
-
- fi->saved_regs[rn] = fi->frame - where[rn] + depth - 4;
+ offset = ((inst & 0xff) ^ 0x80) - 0x80;
+ cache->sp_offset -= offset;
}
- else
+ else if (IS_MOVW_PCREL_TO_REG (inst))
{
- fi->saved_regs[rn] = 0;
- }
- }
-
- if (have_fp)
- {
- fi->saved_regs[SP_REGNUM] = read_memory_integer (fi->saved_regs[FP_REGNUM], 4);
- }
- else
- {
- fi->saved_regs[SP_REGNUM] = fi->frame - 4;
- }
-
- fi->extra_info->f_offset = depth - where[FP_REGNUM] - 4;
- /* Work out the return pc - either from the saved pr or the pr
- value */
-}
-
-/* For vectors of 4 floating point registers. */
-static int
-fv_reg_base_num (int fv_regnum)
-{
- int fp_regnum;
-
- fp_regnum = FP0_REGNUM +
- (fv_regnum - gdbarch_tdep (current_gdbarch)->FV0_REGNUM) * 4;
- return fp_regnum;
-}
-
-/* For double precision floating point registers, i.e 2 fp regs.*/
-static int
-dr_reg_base_num (int dr_regnum)
-{
- int fp_regnum;
-
- fp_regnum = FP0_REGNUM +
- (dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_REGNUM) * 2;
- return fp_regnum;
-}
-
-static void
-sh_fp_frame_init_saved_regs (struct frame_info *fi)
-{
- int *where = (int *) alloca ((NUM_REGS + NUM_PSEUDO_REGS) * sizeof(int));
- int rn;
- int have_fp = 0;
- int depth;
- int pc;
- int opc;
- int insn;
- int r3_val = 0;
- char *dummy_regs = generic_find_dummy_frame (fi->pc, fi->frame);
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (fi->saved_regs == NULL)
- frame_saved_regs_zalloc (fi);
- else
- memset (fi->saved_regs, 0, SIZEOF_FRAME_SAVED_REGS);
-
- if (dummy_regs)
- {
- /* DANGER! This is ONLY going to work if the char buffer format of
- the saved registers is byte-for-byte identical to the
- CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */
- memcpy (fi->saved_regs, dummy_regs, sizeof (fi->saved_regs));
- return;
- }
-
- fi->extra_info->leaf_function = 1;
- fi->extra_info->f_offset = 0;
-
- for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++)
- where[rn] = -1;
-
- depth = 0;
-
- /* Loop around examining the prologue insns until we find something
- that does not appear to be part of the prologue. But give up
- after 20 of them, since we're getting silly then. */
-
- pc = get_pc_function_start (fi->pc);
- if (!pc)
- {
- fi->pc = 0;
- return;
- }
-
- for (opc = pc + (2 * 28); pc < opc; pc += 2)
- {
- insn = read_memory_integer (pc, 2);
- /* See where the registers will be saved to */
- if (IS_PUSH (insn))
- {
- rn = GET_PUSHED_REG (insn);
- where[rn] = depth;
- depth += 4;
- }
- else if (IS_STS (insn))
- {
- where[tdep->PR_REGNUM] = depth;
- /* If we're storing the pr then this isn't a leaf */
- fi->extra_info->leaf_function = 0;
- depth += 4;
- }
- else if (IS_MOV_R3 (insn))
- {
- r3_val = ((insn & 0xff) ^ 0x80) - 0x80;
- }
- else if (IS_SHLL_R3 (insn))
- {
- r3_val <<= 1;
+ if (sav_reg < 0)
+ {
+ reg = GET_TARGET_REG (inst);
+ if (reg < 14)
+ {
+ sav_reg = reg;
+ offset = (((inst & 0xff) ^ 0x80) - 0x80) << 1;
+ sav_offset =
+ read_memory_integer (((pc + 4) & ~3) + offset, 2);
+ }
+ }
}
- else if (IS_ADD_R3SP (insn))
+ else if (IS_MOVL_PCREL_TO_REG (inst))
{
- depth += -r3_val;
+ if (sav_reg < 0)
+ {
+ reg = (inst & 0x0f00) >> 8;
+ if (reg < 14)
+ {
+ sav_reg = reg;
+ offset = (((inst & 0xff) ^ 0x80) - 0x80) << 1;
+ sav_offset =
+ read_memory_integer (((pc + 4) & ~3) + offset, 4);
+ }
+ }
}
- else if (IS_ADD_SP (insn))
+ else if (IS_SUB_REG_FROM_SP (inst))
{
- depth -= ((insn & 0xff) ^ 0x80) - 0x80;
+ reg = GET_SOURCE_REG (inst);
+ if (sav_reg > 0 && reg == sav_reg)
+ {
+ sav_reg = -1;
+ }
+ cache->sp_offset += sav_offset;
}
- else if (IS_FMOV (insn))
+ else if (IS_FPUSH (inst))
{
- if (read_register (tdep->FPSCR_REGNUM) & FPSCR_SZ)
+ if (read_register (FPSCR_REGNUM) & FPSCR_SZ)
{
- depth += 8;
+ cache->sp_offset += 8;
}
else
{
- depth += 4;
+ cache->sp_offset += 4;
}
}
- else if (IS_MOV_SP_FP (insn))
- break;
-#if 0 /* This used to just stop when it found an instruction that
- was not considered part of the prologue. Now, we just
- keep going looking for likely instructions. */
+ else if (IS_MOV_SP_FP (inst))
+ {
+ if (!cache->uses_fp)
+ cache->uses_fp = 1;
+ /* At this point, only allow argument register moves to other
+ registers or argument register moves to @(X,fp) which are
+ moving the register arguments onto the stack area allocated
+ by a former add somenumber to SP call. Don't allow moving
+ to an fp indirect address above fp + cache->sp_offset. */
+ pc += 2;
+ for (opc = pc + 12; pc < opc; pc += 2)
+ {
+ inst = read_memory_integer (pc, 2);
+ if (IS_MOV_ARG_TO_IND_R14 (inst))
+ {
+ reg = GET_SOURCE_REG (inst);
+ if (cache->sp_offset > 0)
+ cache->saved_regs[reg] = cache->sp_offset;
+ }
+ else if (IS_MOV_ARG_TO_IND_R14_WITH_DISP (inst))
+ {
+ reg = GET_SOURCE_REG (inst);
+ offset = (inst & 0xf) * 4;
+ if (cache->sp_offset > offset)
+ cache->saved_regs[reg] = cache->sp_offset - offset;
+ }
+ else if (IS_MOV_ARG_TO_REG (inst))
+ continue;
+ else
+ break;
+ }
+ break;
+ }
+#if 0 /* This used to just stop when it found an instruction that
+ was not considered part of the prologue. Now, we just
+ keep going looking for likely instructions. */
else
break;
#endif
}
- /* Now we know how deep things are, we can work out their addresses */
+ return pc;
+}
- for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++)
- {
- if (where[rn] >= 0)
- {
- if (rn == FP_REGNUM)
- have_fp = 1;
+/* Skip any prologue before the guts of a function */
- fi->saved_regs[rn] = fi->frame - where[rn] + depth - 4;
- }
- else
- {
- fi->saved_regs[rn] = 0;
- }
- }
+/* Skip the prologue using the debug information. If this fails we'll
+ fall back on the 'guess' method below. */
+static CORE_ADDR
+after_prologue (CORE_ADDR pc)
+{
+ struct symtab_and_line sal;
+ CORE_ADDR func_addr, func_end;
- if (have_fp)
- {
- fi->saved_regs[SP_REGNUM] =
- read_memory_integer (fi->saved_regs[FP_REGNUM], 4);
- }
- else
- {
- fi->saved_regs[SP_REGNUM] = fi->frame - 4;
- }
+ /* If we can not find the symbol in the partial symbol table, then
+ there is no hope we can determine the function's start address
+ with this code. */
+ if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end))
+ return 0;
+
+ /* Get the line associated with FUNC_ADDR. */
+ sal = find_pc_line (func_addr, 0);
- fi->extra_info->f_offset = depth - where[FP_REGNUM] - 4;
- /* Work out the return pc - either from the saved pr or the pr
- value */
+ /* There are only two cases to consider. First, the end of the source line
+ is within the function bounds. In that case we return the end of the
+ source line. Second is the end of the source line extends beyond the
+ bounds of the current function. We need to use the slow code to
+ examine instructions in that case. */
+ if (sal.end < func_end)
+ return sal.end;
+ else
+ return 0;
}
-/* Initialize the extra info saved in a FRAME */
-static void
-sh_init_extra_frame_info (int fromleaf, struct frame_info *fi)
+static CORE_ADDR
+sh_skip_prologue (CORE_ADDR start_pc)
{
+ CORE_ADDR pc;
+ struct sh_frame_cache cache;
- fi->extra_info = (struct frame_extra_info *)
- frame_obstack_alloc (sizeof (struct frame_extra_info));
+ /* See if we can determine the end of the prologue via the symbol table.
+ If so, then return either PC, or the PC after the prologue, whichever
+ is greater. */
+ pc = after_prologue (start_pc);
- if (fi->next)
- fi->pc = FRAME_SAVED_PC (fi->next);
+ /* If after_prologue returned a useful address, then use it. Else
+ fall back on the instruction skipping code. */
+ if (pc)
+ return max (pc, start_pc);
- if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
- {
- /* We need to setup fi->frame here because run_stack_dummy gets it wrong
- by assuming it's always FP. */
- fi->frame = generic_read_register_dummy (fi->pc, fi->frame,
- SP_REGNUM);
- fi->extra_info->return_pc = generic_read_register_dummy (fi->pc,
- fi->frame,
- PC_REGNUM);
- fi->extra_info->f_offset = -(CALL_DUMMY_LENGTH + 4);
- fi->extra_info->leaf_function = 0;
- return;
- }
- else
- {
- FRAME_INIT_SAVED_REGS (fi);
- fi->extra_info->return_pc =
- sh_find_callers_reg (fi, gdbarch_tdep (current_gdbarch)->PR_REGNUM);
- }
+ cache.sp_offset = -4;
+ pc = sh_analyze_prologue (start_pc, (CORE_ADDR) -1, &cache);
+ if (!cache.uses_fp)
+ return start_pc;
+
+ return pc;
+}
+
+/* Should call_function allocate stack space for a struct return? */
+static int
+sh_use_struct_convention (int gcc_p, struct type *type)
+{
+ int len = TYPE_LENGTH (type);
+ int nelem = TYPE_NFIELDS (type);
+ return ((len != 1 && len != 2 && len != 4 && len != 8) || nelem != 1) &&
+ (len != 8 || TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)) != 4);
}
/* Extract from an array REGBUF containing the (raw) register state
the address in which a function should return its structure value,
as a CORE_ADDR (or an expression that can be used as one). */
static CORE_ADDR
-sh_extract_struct_value_address (char *regbuf)
+sh_extract_struct_value_address (struct regcache *regcache)
{
- return (extract_address ((regbuf), REGISTER_RAW_SIZE (0)));
-}
+ ULONGEST addr;
-static CORE_ADDR
-sh_frame_saved_pc (struct frame_info *frame)
-{
- return ((frame)->extra_info->return_pc);
+ regcache_cooked_read_unsigned (regcache, STRUCT_RETURN_REGNUM, &addr);
+ return addr;
}
-/* Discard from the stack the innermost frame,
- restoring all saved registers. */
-static void
-sh_pop_frame (void)
+static CORE_ADDR
+sh_frame_align (struct gdbarch *ignore, CORE_ADDR sp)
{
- register struct frame_info *frame = get_current_frame ();
- register CORE_ADDR fp;
- register int regnum;
-
- if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
- generic_pop_dummy_frame ();
- else
- {
- fp = FRAME_FP (frame);
- FRAME_INIT_SAVED_REGS (frame);
-
- /* Copy regs from where they were saved in the frame */
- for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++)
- if (frame->saved_regs[regnum])
- write_register (regnum,
- read_memory_integer (frame->saved_regs[regnum], 4));
-
- write_register (PC_REGNUM, frame->extra_info->return_pc);
- write_register (SP_REGNUM, fp + 4);
- }
- flush_cached_frames ();
+ return sp & ~3;
}
-/* Function: push_arguments
+/* Function: push_dummy_call (formerly push_arguments)
Setup the function arguments for calling a function in the inferior.
On the Hitachi SH architecture, there are four registers (R4 to R7)
four arguments (depending on size) may go into these registers.
The rest go on the stack.
+ MVS: Except on SH variants that have floating point registers.
+ In that case, float and double arguments are passed in the same
+ manner, but using FP registers instead of GP registers.
+
Arguments that are smaller than 4 bytes will still take up a whole
register or a whole 32-bit word on the stack, and will be
right-justified in the register or the stack word. This includes
that will be passed in this way; in other words, the convention of
passing a pointer to a large aggregate instead of a copy is not used.
+ MVS: The above appears to be true for the SH variants that do not
+ have an FPU, however those that have an FPU appear to copy the
+ aggregate argument onto the stack (and not place it in registers)
+ if it is larger than 16 bytes (four GP registers).
+
An exceptional case exists for struct arguments (and possibly other
aggregates such as arrays) if the size is larger than 4 bytes but
not a multiple of 4 bytes. In this case the argument is never split
not displace any of the other arguments passed in via registers R4
to R7. */
+/* Helper function to justify value in register according to endianess. */
+static char *
+sh_justify_value_in_reg (struct value *val, int len)
+{
+ static char valbuf[4];
+
+ memset (valbuf, 0, sizeof (valbuf));
+ if (len < 4)
+ {
+ /* value gets right-justified in the register or stack word */
+ if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
+ memcpy (valbuf + (4 - len), (char *) VALUE_CONTENTS (val), len);
+ else
+ memcpy (valbuf, (char *) VALUE_CONTENTS (val), len);
+ return valbuf;
+ }
+ return (char *) VALUE_CONTENTS (val);
+}
+
+/* Helper function to eval number of bytes to allocate on stack. */
static CORE_ADDR
-sh_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
- int struct_return, CORE_ADDR struct_addr)
+sh_stack_allocsize (int nargs, struct value **args)
+{
+ int stack_alloc = 0;
+ while (nargs-- > 0)
+ stack_alloc += ((TYPE_LENGTH (VALUE_TYPE (args[nargs])) + 3) & ~3);
+ return stack_alloc;
+}
+
+/* Helper functions for getting the float arguments right. Registers usage
+ depends on the ABI and the endianess. The comments should enlighten how
+ it's intended to work. */
+
+/* This array stores which of the float arg registers are already in use. */
+static int flt_argreg_array[FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM + 1];
+
+/* This function just resets the above array to "no reg used so far". */
+static void
+sh_init_flt_argreg (void)
+{
+ memset (flt_argreg_array, 0, sizeof flt_argreg_array);
+}
+
+/* This function returns the next register to use for float arg passing.
+ It returns either a valid value between FLOAT_ARG0_REGNUM and
+ FLOAT_ARGLAST_REGNUM if a register is available, otherwise it returns
+ FLOAT_ARGLAST_REGNUM + 1 to indicate that no register is available.
+
+ Note that register number 0 in flt_argreg_array corresponds with the
+ real float register fr4. In contrast to FLOAT_ARG0_REGNUM (value is
+ 29) the parity of the register number is preserved, which is important
+ for the double register passing test (see the "argreg & 1" test below). */
+static int
+sh_next_flt_argreg (int len)
{
- int stack_offset, stack_alloc;
int argreg;
+
+ /* First search for the next free register. */
+ for (argreg = 0; argreg <= FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM;
+ ++argreg)
+ if (!flt_argreg_array[argreg])
+ break;
+
+ /* No register left? */
+ if (argreg > FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM)
+ return FLOAT_ARGLAST_REGNUM + 1;
+
+ if (len == 8)
+ {
+ /* Doubles are always starting in a even register number. */
+ if (argreg & 1)
+ {
+ flt_argreg_array[argreg] = 1;
+
+ ++argreg;
+
+ /* No register left? */
+ if (argreg > FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM)
+ return FLOAT_ARGLAST_REGNUM + 1;
+ }
+ /* Also mark the next register as used. */
+ flt_argreg_array[argreg + 1] = 1;
+ }
+ else if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE)
+ {
+ /* In little endian, gcc passes floats like this: f5, f4, f7, f6, ... */
+ if (!flt_argreg_array[argreg + 1])
+ ++argreg;
+ }
+ flt_argreg_array[argreg] = 1;
+ return FLOAT_ARG0_REGNUM + argreg;
+}
+
+static CORE_ADDR
+sh_push_dummy_call_fpu (struct gdbarch *gdbarch,
+ CORE_ADDR func_addr,
+ struct regcache *regcache,
+ CORE_ADDR bp_addr, int nargs,
+ struct value **args,
+ CORE_ADDR sp, int struct_return,
+ CORE_ADDR struct_addr)
+{
+ int stack_offset = 0;
+ int argreg = ARG0_REGNUM;
+ int flt_argreg;
int argnum;
struct type *type;
CORE_ADDR regval;
char *val;
- char valbuf[4];
- int len;
- int odd_sized_struct;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ int len, reg_size;
+ int pass_on_stack;
/* first force sp to a 4-byte alignment */
- sp = sp & ~3;
+ sp = sh_frame_align (gdbarch, sp);
- /* The "struct return pointer" pseudo-argument has its own dedicated
- register */
if (struct_return)
- write_register (STRUCT_RETURN_REGNUM, struct_addr);
+ regcache_cooked_write_unsigned (regcache,
+ STRUCT_RETURN_REGNUM, struct_addr);
- /* Now make sure there's space on the stack */
- for (argnum = 0, stack_alloc = 0; argnum < nargs; argnum++)
- stack_alloc += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 3) & ~3);
- sp -= stack_alloc; /* make room on stack for args */
+ /* make room on stack for args */
+ sp -= sh_stack_allocsize (nargs, args);
+
+ /* Initialize float argument mechanism. */
+ sh_init_flt_argreg ();
/* Now load as many as possible of the first arguments into
registers, and push the rest onto the stack. There are 16 bytes
in four registers available. Loop thru args from first to last. */
-
- argreg = tdep->ARG0_REGNUM;
- for (argnum = 0, stack_offset = 0; argnum < nargs; argnum++)
+ for (argnum = 0; argnum < nargs; argnum++)
{
type = VALUE_TYPE (args[argnum]);
len = TYPE_LENGTH (type);
- memset (valbuf, 0, sizeof (valbuf));
- if (len < 4)
- {
- /* value gets right-justified in the register or stack word */
- memcpy (valbuf + (4 - len),
- (char *) VALUE_CONTENTS (args[argnum]), len);
- val = valbuf;
- }
- else
- val = (char *) VALUE_CONTENTS (args[argnum]);
+ val = sh_justify_value_in_reg (args[argnum], len);
+
+ /* Some decisions have to be made how various types are handled.
+ This also differs in different ABIs. */
+ pass_on_stack = 0;
+ if (len > 16)
+ pass_on_stack = 1; /* Types bigger than 16 bytes are passed on stack. */
+
+ /* Find out the next register to use for a floating point value. */
+ if (TYPE_CODE (type) == TYPE_CODE_FLT)
+ flt_argreg = sh_next_flt_argreg (len);
- if (len > 4 && (len & 3) != 0)
- odd_sized_struct = 1; /* such structs go entirely on stack */
- else
- odd_sized_struct = 0;
while (len > 0)
{
- if (argreg > tdep->ARGLAST_REGNUM
- || odd_sized_struct)
- {
- /* must go on the stack */
- write_memory (sp + stack_offset, val, 4);
- stack_offset += 4;
+ if ((TYPE_CODE (type) == TYPE_CODE_FLT
+ && flt_argreg > FLOAT_ARGLAST_REGNUM)
+ || argreg > ARGLAST_REGNUM || pass_on_stack)
+ {
+ /* The remainder of the data goes entirely on the stack,
+ 4-byte aligned. */
+ reg_size = (len + 3) & ~3;
+ write_memory (sp + stack_offset, val, reg_size);
+ stack_offset += reg_size;
+ }
+ else if (TYPE_CODE (type) == TYPE_CODE_FLT
+ && flt_argreg <= FLOAT_ARGLAST_REGNUM)
+ {
+ /* Argument goes in a float argument register. */
+ reg_size = register_size (gdbarch, flt_argreg);
+ regval = extract_unsigned_integer (val, reg_size);
+ regcache_cooked_write_unsigned (regcache, flt_argreg++, regval);
}
- /* NOTE WELL!!!!! This is not an "else if" clause!!!
- That's because some *&^%$ things get passed on the stack
- AND in the registers! */
- if (argreg <= tdep->ARGLAST_REGNUM)
- {
+ else if (argreg <= ARGLAST_REGNUM)
+ {
/* there's room in a register */
- regval = extract_address (val, REGISTER_RAW_SIZE (argreg));
- write_register (argreg++, regval);
+ reg_size = register_size (gdbarch, argreg);
+ regval = extract_unsigned_integer (val, reg_size);
+ regcache_cooked_write_unsigned (regcache, argreg++, regval);
}
- /* Store the value 4 bytes at a time. This means that things
- larger than 4 bytes may go partly in registers and partly
+ /* Store the value reg_size bytes at a time. This means that things
+ larger than reg_size bytes may go partly in registers and partly
on the stack. */
- len -= REGISTER_RAW_SIZE (argreg);
- val += REGISTER_RAW_SIZE (argreg);
+ len -= reg_size;
+ val += reg_size;
}
}
- return sp;
-}
-/* Function: push_return_address (pc)
- Set up the return address for the inferior function call.
- Needed for targets where we don't actually execute a JSR/BSR instruction */
+ /* Store return address. */
+ regcache_cooked_write_unsigned (regcache, PR_REGNUM, bp_addr);
+
+ /* Update stack pointer. */
+ regcache_cooked_write_unsigned (regcache, SP_REGNUM, sp);
-static CORE_ADDR
-sh_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
-{
- write_register (gdbarch_tdep (current_gdbarch)->PR_REGNUM, CALL_DUMMY_ADDRESS ());
return sp;
}
-/* Function: fix_call_dummy
- Poke the callee function's address into the destination part of
- the CALL_DUMMY. The address is actually stored in a data word
- following the actualy CALL_DUMMY instructions, which will load
- it into a register using PC-relative addressing. This function
- expects the CALL_DUMMY to look like this:
+static CORE_ADDR
+sh_push_dummy_call_nofpu (struct gdbarch *gdbarch,
+ CORE_ADDR func_addr,
+ struct regcache *regcache,
+ CORE_ADDR bp_addr,
+ int nargs, struct value **args,
+ CORE_ADDR sp, int struct_return,
+ CORE_ADDR struct_addr)
+{
+ int stack_offset = 0;
+ int argreg = ARG0_REGNUM;
+ int argnum;
+ struct type *type;
+ CORE_ADDR regval;
+ char *val;
+ int len, reg_size;
- mov.w @(2,PC), R8
- jsr @R8
- nop
- trap
- <destination>
- */
+ /* first force sp to a 4-byte alignment */
+ sp = sh_frame_align (gdbarch, sp);
-#if 0
-void
-sh_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs,
- struct value **args, struct type *type, int gcc_p)
-{
- *(unsigned long *) (dummy + 8) = fun;
-}
-#endif
+ if (struct_return)
+ regcache_cooked_write_unsigned (regcache,
+ STRUCT_RETURN_REGNUM, struct_addr);
-static int
-sh_coerce_float_to_double (struct type *formal, struct type *actual)
-{
- return 1;
+ /* make room on stack for args */
+ sp -= sh_stack_allocsize (nargs, args);
+
+ /* Now load as many as possible of the first arguments into
+ registers, and push the rest onto the stack. There are 16 bytes
+ in four registers available. Loop thru args from first to last. */
+ for (argnum = 0; argnum < nargs; argnum++)
+ {
+ type = VALUE_TYPE (args[argnum]);
+ len = TYPE_LENGTH (type);
+ val = sh_justify_value_in_reg (args[argnum], len);
+
+ while (len > 0)
+ {
+ if (argreg > ARGLAST_REGNUM)
+ {
+ /* The remainder of the data goes entirely on the stack,
+ 4-byte aligned. */
+ reg_size = (len + 3) & ~3;
+ write_memory (sp + stack_offset, val, reg_size);
+ stack_offset += reg_size;
+ }
+ else if (argreg <= ARGLAST_REGNUM)
+ {
+ /* there's room in a register */
+ reg_size = register_size (gdbarch, argreg);
+ regval = extract_unsigned_integer (val, reg_size);
+ regcache_cooked_write_unsigned (regcache, argreg++, regval);
+ }
+ /* Store the value reg_size bytes at a time. This means that things
+ larger than reg_size bytes may go partly in registers and partly
+ on the stack. */
+ len -= reg_size;
+ val += reg_size;
+ }
+ }
+
+ /* Store return address. */
+ regcache_cooked_write_unsigned (regcache, PR_REGNUM, bp_addr);
+
+ /* Update stack pointer. */
+ regcache_cooked_write_unsigned (regcache, SP_REGNUM, sp);
+
+ return sp;
}
/* Find a function's return value in the appropriate registers (in
containing the (raw) register state a function return value of type
TYPE, and copy that, in virtual format, into VALBUF. */
static void
-sh_extract_return_value (struct type *type, char *regbuf, char *valbuf)
+sh_default_extract_return_value (struct type *type, struct regcache *regcache,
+ void *valbuf)
{
int len = TYPE_LENGTH (type);
int return_register = R0_REGNUM;
int offset;
-
+
if (len <= 4)
{
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- offset = REGISTER_BYTE (return_register) + 4 - len;
- else
- offset = REGISTER_BYTE (return_register);
- memcpy (valbuf, regbuf + offset, len);
+ ULONGEST c;
+
+ regcache_cooked_read_unsigned (regcache, R0_REGNUM, &c);
+ store_unsigned_integer (valbuf, len, c);
}
- else if (len <= 8)
+ else if (len == 8)
{
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- offset = REGISTER_BYTE (return_register) + 8 - len;
- else
- offset = REGISTER_BYTE (return_register);
- memcpy (valbuf, regbuf + offset, len);
+ int i, regnum = R0_REGNUM;
+ for (i = 0; i < len; i += 4)
+ regcache_raw_read (regcache, regnum++, (char *) valbuf + i);
}
else
error ("bad size for return value");
}
static void
-sh3e_sh4_extract_return_value (struct type *type, char *regbuf, char *valbuf)
+sh3e_sh4_extract_return_value (struct type *type, struct regcache *regcache,
+ void *valbuf)
{
- int return_register;
- int offset;
- int len = TYPE_LENGTH (type);
-
if (TYPE_CODE (type) == TYPE_CODE_FLT)
- return_register = FP0_REGNUM;
- else
- return_register = R0_REGNUM;
-
- if (len == 8 && TYPE_CODE (type) == TYPE_CODE_FLT)
- {
- DOUBLEST val;
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE)
- floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword,
- (char *) regbuf + REGISTER_BYTE (return_register),
- &val);
- else
- floatformat_to_doublest (&floatformat_ieee_double_big,
- (char *) regbuf + REGISTER_BYTE (return_register),
- &val);
- store_floating (valbuf, len, val);
- }
- else if (len <= 4)
{
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- offset = REGISTER_BYTE (return_register) + 4 - len;
- else
- offset = REGISTER_BYTE (return_register);
- memcpy (valbuf, regbuf + offset, len);
- }
- else if (len <= 8)
- {
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- offset = REGISTER_BYTE (return_register) + 8 - len;
- else
- offset = REGISTER_BYTE (return_register);
- memcpy (valbuf, regbuf + offset, len);
+ int len = TYPE_LENGTH (type);
+ int i, regnum = FP0_REGNUM;
+ for (i = 0; i < len; i += 4)
+ regcache_raw_read (regcache, regnum++, (char *) valbuf + i);
}
else
- error ("bad size for return value");
+ sh_default_extract_return_value (type, regcache, valbuf);
}
/* Write into appropriate registers a function return value
depending on the type of the return value. In all the other cases
the result is stored in r0, left-justified. */
static void
-sh_default_store_return_value (struct type *type, char *valbuf)
+sh_default_store_return_value (struct type *type, struct regcache *regcache,
+ const void *valbuf)
{
- char buf[32]; /* more than enough... */
+ ULONGEST val;
+ int len = TYPE_LENGTH (type);
- if (TYPE_LENGTH (type) < REGISTER_RAW_SIZE (R0_REGNUM))
+ if (len <= 4)
{
- /* Add leading zeros to the value. */
- memset (buf, 0, REGISTER_RAW_SIZE (R0_REGNUM));
- memcpy (buf + REGISTER_RAW_SIZE (R0_REGNUM) - TYPE_LENGTH (type),
- valbuf, TYPE_LENGTH (type));
- write_register_bytes (REGISTER_BYTE (R0_REGNUM), buf,
- REGISTER_RAW_SIZE (R0_REGNUM));
+ val = extract_unsigned_integer (valbuf, len);
+ regcache_cooked_write_unsigned (regcache, R0_REGNUM, val);
}
else
- write_register_bytes (REGISTER_BYTE (R0_REGNUM), valbuf,
- TYPE_LENGTH (type));
+ {
+ int i, regnum = R0_REGNUM;
+ for (i = 0; i < len; i += 4)
+ regcache_raw_write (regcache, regnum++, (char *) valbuf + i);
+ }
}
static void
-sh3e_sh4_store_return_value (struct type *type, char *valbuf)
+sh3e_sh4_store_return_value (struct type *type, struct regcache *regcache,
+ const void *valbuf)
{
- if (TYPE_CODE (type) == TYPE_CODE_FLT)
- write_register_bytes (REGISTER_BYTE (FP0_REGNUM),
- valbuf, TYPE_LENGTH (type));
+ if (TYPE_CODE (type) == TYPE_CODE_FLT)
+ {
+ int len = TYPE_LENGTH (type);
+ int i, regnum = FP0_REGNUM;
+ for (i = 0; i < len; i += 4)
+ regcache_raw_write (regcache, regnum++, (char *) valbuf + i);
+ }
else
- sh_default_store_return_value (type, valbuf);
+ sh_default_store_return_value (type, regcache, valbuf);
}
/* Print the registers in a form similar to the E7000 */
static void
sh_generic_show_regs (void)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
- (long) read_register (tdep->SR_REGNUM),
- (long) read_register (tdep->PR_REGNUM),
+ (long) read_register (SR_REGNUM),
+ (long) read_register (PR_REGNUM),
(long) read_register (MACH_REGNUM),
(long) read_register (MACL_REGNUM));
(long) read_register (GBR_REGNUM),
(long) read_register (VBR_REGNUM));
- printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (0),
- (long) read_register (1),
- (long) read_register (2),
- (long) read_register (3),
- (long) read_register (4),
- (long) read_register (5),
- (long) read_register (6),
- (long) read_register (7));
+ printf_filtered
+ ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+ (long) read_register (0), (long) read_register (1),
+ (long) read_register (2), (long) read_register (3),
+ (long) read_register (4), (long) read_register (5),
+ (long) read_register (6), (long) read_register (7));
printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (8),
- (long) read_register (9),
- (long) read_register (10),
- (long) read_register (11),
- (long) read_register (12),
- (long) read_register (13),
- (long) read_register (14),
- (long) read_register (15));
+ (long) read_register (8), (long) read_register (9),
+ (long) read_register (10), (long) read_register (11),
+ (long) read_register (12), (long) read_register (13),
+ (long) read_register (14), (long) read_register (15));
}
static void
sh3_show_regs (void)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
- (long) read_register (tdep->SR_REGNUM),
- (long) read_register (tdep->PR_REGNUM),
+ (long) read_register (SR_REGNUM),
+ (long) read_register (PR_REGNUM),
(long) read_register (MACH_REGNUM),
(long) read_register (MACL_REGNUM));
(long) read_register (GBR_REGNUM),
(long) read_register (VBR_REGNUM));
printf_filtered (" SSR=%08lx SPC=%08lx",
- (long) read_register (tdep->SSR_REGNUM),
- (long) read_register (tdep->SPC_REGNUM));
-
- printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (0),
- (long) read_register (1),
- (long) read_register (2),
- (long) read_register (3),
- (long) read_register (4),
- (long) read_register (5),
- (long) read_register (6),
- (long) read_register (7));
+ (long) read_register (SSR_REGNUM),
+ (long) read_register (SPC_REGNUM));
+
+ printf_filtered
+ ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+ (long) read_register (0), (long) read_register (1),
+ (long) read_register (2), (long) read_register (3),
+ (long) read_register (4), (long) read_register (5),
+ (long) read_register (6), (long) read_register (7));
printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (8),
- (long) read_register (9),
- (long) read_register (10),
- (long) read_register (11),
- (long) read_register (12),
- (long) read_register (13),
- (long) read_register (14),
- (long) read_register (15));
+ (long) read_register (8), (long) read_register (9),
+ (long) read_register (10), (long) read_register (11),
+ (long) read_register (12), (long) read_register (13),
+ (long) read_register (14), (long) read_register (15));
}
static void
-sh3e_show_regs (void)
+sh2e_show_regs (void)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
- (long) read_register (tdep->SR_REGNUM),
- (long) read_register (tdep->PR_REGNUM),
+ (long) read_register (SR_REGNUM),
+ (long) read_register (PR_REGNUM),
(long) read_register (MACH_REGNUM),
(long) read_register (MACL_REGNUM));
printf_filtered ("GBR=%08lx VBR=%08lx",
(long) read_register (GBR_REGNUM),
(long) read_register (VBR_REGNUM));
- printf_filtered (" SSR=%08lx SPC=%08lx",
- (long) read_register (tdep->SSR_REGNUM),
- (long) read_register (tdep->SPC_REGNUM));
printf_filtered (" FPUL=%08lx FPSCR=%08lx",
- (long) read_register (tdep->FPUL_REGNUM),
- (long) read_register (tdep->FPSCR_REGNUM));
-
- printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (0),
- (long) read_register (1),
- (long) read_register (2),
- (long) read_register (3),
- (long) read_register (4),
- (long) read_register (5),
- (long) read_register (6),
- (long) read_register (7));
+ (long) read_register (FPUL_REGNUM),
+ (long) read_register (FPSCR_REGNUM));
+
+ printf_filtered
+ ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+ (long) read_register (0), (long) read_register (1),
+ (long) read_register (2), (long) read_register (3),
+ (long) read_register (4), (long) read_register (5),
+ (long) read_register (6), (long) read_register (7));
printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (8),
- (long) read_register (9),
- (long) read_register (10),
- (long) read_register (11),
- (long) read_register (12),
- (long) read_register (13),
- (long) read_register (14),
- (long) read_register (15));
-
- printf_filtered (("FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
- (long) read_register (FP0_REGNUM + 0),
- (long) read_register (FP0_REGNUM + 1),
- (long) read_register (FP0_REGNUM + 2),
- (long) read_register (FP0_REGNUM + 3),
- (long) read_register (FP0_REGNUM + 4),
- (long) read_register (FP0_REGNUM + 5),
- (long) read_register (FP0_REGNUM + 6),
- (long) read_register (FP0_REGNUM + 7));
- printf_filtered (("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
- (long) read_register (FP0_REGNUM + 8),
- (long) read_register (FP0_REGNUM + 9),
- (long) read_register (FP0_REGNUM + 10),
- (long) read_register (FP0_REGNUM + 11),
- (long) read_register (FP0_REGNUM + 12),
- (long) read_register (FP0_REGNUM + 13),
- (long) read_register (FP0_REGNUM + 14),
- (long) read_register (FP0_REGNUM + 15));
+ (long) read_register (8), (long) read_register (9),
+ (long) read_register (10), (long) read_register (11),
+ (long) read_register (12), (long) read_register (13),
+ (long) read_register (14), (long) read_register (15));
+
+ printf_filtered (("FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), (long) read_register (FP0_REGNUM + 0), (long) read_register (FP0_REGNUM + 1), (long) read_register (FP0_REGNUM + 2), (long) read_register (FP0_REGNUM + 3), (long) read_register (FP0_REGNUM + 4), (long) read_register (FP0_REGNUM + 5), (long) read_register (FP0_REGNUM + 6), (long) read_register (FP0_REGNUM + 7));
+ printf_filtered (("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), (long) read_register (FP0_REGNUM + 8), (long) read_register (FP0_REGNUM + 9), (long) read_register (FP0_REGNUM + 10), (long) read_register (FP0_REGNUM + 11), (long) read_register (FP0_REGNUM + 12), (long) read_register (FP0_REGNUM + 13), (long) read_register (FP0_REGNUM + 14), (long) read_register (FP0_REGNUM + 15));
+}
+
+static void
+sh3e_show_regs (void)
+{
+ printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
+ paddr (read_register (PC_REGNUM)),
+ (long) read_register (SR_REGNUM),
+ (long) read_register (PR_REGNUM),
+ (long) read_register (MACH_REGNUM),
+ (long) read_register (MACL_REGNUM));
+
+ printf_filtered ("GBR=%08lx VBR=%08lx",
+ (long) read_register (GBR_REGNUM),
+ (long) read_register (VBR_REGNUM));
+ printf_filtered (" SSR=%08lx SPC=%08lx",
+ (long) read_register (SSR_REGNUM),
+ (long) read_register (SPC_REGNUM));
+ printf_filtered (" FPUL=%08lx FPSCR=%08lx",
+ (long) read_register (FPUL_REGNUM),
+ (long) read_register (FPSCR_REGNUM));
+
+ printf_filtered
+ ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+ (long) read_register (0), (long) read_register (1),
+ (long) read_register (2), (long) read_register (3),
+ (long) read_register (4), (long) read_register (5),
+ (long) read_register (6), (long) read_register (7));
+ printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+ (long) read_register (8), (long) read_register (9),
+ (long) read_register (10), (long) read_register (11),
+ (long) read_register (12), (long) read_register (13),
+ (long) read_register (14), (long) read_register (15));
+
+ printf_filtered (("FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), (long) read_register (FP0_REGNUM + 0), (long) read_register (FP0_REGNUM + 1), (long) read_register (FP0_REGNUM + 2), (long) read_register (FP0_REGNUM + 3), (long) read_register (FP0_REGNUM + 4), (long) read_register (FP0_REGNUM + 5), (long) read_register (FP0_REGNUM + 6), (long) read_register (FP0_REGNUM + 7));
+ printf_filtered (("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), (long) read_register (FP0_REGNUM + 8), (long) read_register (FP0_REGNUM + 9), (long) read_register (FP0_REGNUM + 10), (long) read_register (FP0_REGNUM + 11), (long) read_register (FP0_REGNUM + 12), (long) read_register (FP0_REGNUM + 13), (long) read_register (FP0_REGNUM + 14), (long) read_register (FP0_REGNUM + 15));
}
static void
sh3_dsp_show_regs (void)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
- (long) read_register (tdep->SR_REGNUM),
- (long) read_register (tdep->PR_REGNUM),
+ (long) read_register (SR_REGNUM),
+ (long) read_register (PR_REGNUM),
(long) read_register (MACH_REGNUM),
(long) read_register (MACL_REGNUM));
(long) read_register (VBR_REGNUM));
printf_filtered (" SSR=%08lx SPC=%08lx",
- (long) read_register (tdep->SSR_REGNUM),
- (long) read_register (tdep->SPC_REGNUM));
-
- printf_filtered (" DSR=%08lx",
- (long) read_register (tdep->DSR_REGNUM));
-
- printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (0),
- (long) read_register (1),
- (long) read_register (2),
- (long) read_register (3),
- (long) read_register (4),
- (long) read_register (5),
- (long) read_register (6),
- (long) read_register (7));
+ (long) read_register (SSR_REGNUM),
+ (long) read_register (SPC_REGNUM));
+
+ printf_filtered (" DSR=%08lx", (long) read_register (DSR_REGNUM));
+
+ printf_filtered
+ ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+ (long) read_register (0), (long) read_register (1),
+ (long) read_register (2), (long) read_register (3),
+ (long) read_register (4), (long) read_register (5),
+ (long) read_register (6), (long) read_register (7));
printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (8),
- (long) read_register (9),
- (long) read_register (10),
- (long) read_register (11),
- (long) read_register (12),
- (long) read_register (13),
- (long) read_register (14),
- (long) read_register (15));
-
- printf_filtered ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n",
- (long) read_register (tdep->A0G_REGNUM) & 0xff,
- (long) read_register (tdep->A0_REGNUM),
- (long) read_register (tdep->M0_REGNUM),
- (long) read_register (tdep->X0_REGNUM),
- (long) read_register (tdep->Y0_REGNUM),
- (long) read_register (tdep->RS_REGNUM),
- (long) read_register (tdep->MOD_REGNUM));
+ (long) read_register (8), (long) read_register (9),
+ (long) read_register (10), (long) read_register (11),
+ (long) read_register (12), (long) read_register (13),
+ (long) read_register (14), (long) read_register (15));
+
+ printf_filtered
+ ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n",
+ (long) read_register (A0G_REGNUM) & 0xff,
+ (long) read_register (A0_REGNUM), (long) read_register (M0_REGNUM),
+ (long) read_register (X0_REGNUM), (long) read_register (Y0_REGNUM),
+ (long) read_register (RS_REGNUM), (long) read_register (MOD_REGNUM));
printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n",
- (long) read_register (tdep->A1G_REGNUM) & 0xff,
- (long) read_register (tdep->A1_REGNUM),
- (long) read_register (tdep->M1_REGNUM),
- (long) read_register (tdep->X1_REGNUM),
- (long) read_register (tdep->Y1_REGNUM),
- (long) read_register (tdep->RE_REGNUM));
+ (long) read_register (A1G_REGNUM) & 0xff,
+ (long) read_register (A1_REGNUM),
+ (long) read_register (M1_REGNUM),
+ (long) read_register (X1_REGNUM),
+ (long) read_register (Y1_REGNUM),
+ (long) read_register (RE_REGNUM));
}
static void
sh4_show_regs (void)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- int pr = read_register (tdep->FPSCR_REGNUM) & 0x80000;
+ int pr = read_register (FPSCR_REGNUM) & 0x80000;
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
- (long) read_register (tdep->SR_REGNUM),
- (long) read_register (tdep->PR_REGNUM),
+ (long) read_register (SR_REGNUM),
+ (long) read_register (PR_REGNUM),
(long) read_register (MACH_REGNUM),
(long) read_register (MACL_REGNUM));
(long) read_register (GBR_REGNUM),
(long) read_register (VBR_REGNUM));
printf_filtered (" SSR=%08lx SPC=%08lx",
- (long) read_register (tdep->SSR_REGNUM),
- (long) read_register (tdep->SPC_REGNUM));
+ (long) read_register (SSR_REGNUM),
+ (long) read_register (SPC_REGNUM));
printf_filtered (" FPUL=%08lx FPSCR=%08lx",
- (long) read_register (tdep->FPUL_REGNUM),
- (long) read_register (tdep->FPSCR_REGNUM));
-
- printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (0),
- (long) read_register (1),
- (long) read_register (2),
- (long) read_register (3),
- (long) read_register (4),
- (long) read_register (5),
- (long) read_register (6),
- (long) read_register (7));
+ (long) read_register (FPUL_REGNUM),
+ (long) read_register (FPSCR_REGNUM));
+
+ printf_filtered
+ ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+ (long) read_register (0), (long) read_register (1),
+ (long) read_register (2), (long) read_register (3),
+ (long) read_register (4), (long) read_register (5),
+ (long) read_register (6), (long) read_register (7));
printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (8),
- (long) read_register (9),
- (long) read_register (10),
- (long) read_register (11),
- (long) read_register (12),
- (long) read_register (13),
- (long) read_register (14),
- (long) read_register (15));
+ (long) read_register (8), (long) read_register (9),
+ (long) read_register (10), (long) read_register (11),
+ (long) read_register (12), (long) read_register (13),
+ (long) read_register (14), (long) read_register (15));
printf_filtered ((pr
? "DR0-DR6 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n"
- : "FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
+ :
+ "FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
(long) read_register (FP0_REGNUM + 0),
(long) read_register (FP0_REGNUM + 1),
(long) read_register (FP0_REGNUM + 2),
(long) read_register (FP0_REGNUM + 5),
(long) read_register (FP0_REGNUM + 6),
(long) read_register (FP0_REGNUM + 7));
- printf_filtered ((pr
- ? "DR8-DR14 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n"
- : "FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
+ printf_filtered ((pr ?
+ "DR8-DR14 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n" :
+ "FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
(long) read_register (FP0_REGNUM + 8),
(long) read_register (FP0_REGNUM + 9),
(long) read_register (FP0_REGNUM + 10),
static void
sh_dsp_show_regs (void)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
- (long) read_register (tdep->SR_REGNUM),
- (long) read_register (tdep->PR_REGNUM),
+ (long) read_register (SR_REGNUM),
+ (long) read_register (PR_REGNUM),
(long) read_register (MACH_REGNUM),
(long) read_register (MACL_REGNUM));
(long) read_register (GBR_REGNUM),
(long) read_register (VBR_REGNUM));
- printf_filtered (" DSR=%08lx",
- (long) read_register (tdep->DSR_REGNUM));
-
- printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (0),
- (long) read_register (1),
- (long) read_register (2),
- (long) read_register (3),
- (long) read_register (4),
- (long) read_register (5),
- (long) read_register (6),
- (long) read_register (7));
+ printf_filtered (" DSR=%08lx", (long) read_register (DSR_REGNUM));
+
+ printf_filtered
+ ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+ (long) read_register (0), (long) read_register (1),
+ (long) read_register (2), (long) read_register (3),
+ (long) read_register (4), (long) read_register (5),
+ (long) read_register (6), (long) read_register (7));
printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (8),
- (long) read_register (9),
- (long) read_register (10),
- (long) read_register (11),
- (long) read_register (12),
- (long) read_register (13),
- (long) read_register (14),
- (long) read_register (15));
-
- printf_filtered ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n",
- (long) read_register (tdep->A0G_REGNUM) & 0xff,
- (long) read_register (tdep->A0_REGNUM),
- (long) read_register (tdep->M0_REGNUM),
- (long) read_register (tdep->X0_REGNUM),
- (long) read_register (tdep->Y0_REGNUM),
- (long) read_register (tdep->RS_REGNUM),
- (long) read_register (tdep->MOD_REGNUM));
+ (long) read_register (8), (long) read_register (9),
+ (long) read_register (10), (long) read_register (11),
+ (long) read_register (12), (long) read_register (13),
+ (long) read_register (14), (long) read_register (15));
+
+ printf_filtered
+ ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n",
+ (long) read_register (A0G_REGNUM) & 0xff,
+ (long) read_register (A0_REGNUM), (long) read_register (M0_REGNUM),
+ (long) read_register (X0_REGNUM), (long) read_register (Y0_REGNUM),
+ (long) read_register (RS_REGNUM), (long) read_register (MOD_REGNUM));
printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n",
- (long) read_register (tdep->A1G_REGNUM) & 0xff,
- (long) read_register (tdep->A1_REGNUM),
- (long) read_register (tdep->M1_REGNUM),
- (long) read_register (tdep->X1_REGNUM),
- (long) read_register (tdep->Y1_REGNUM),
- (long) read_register (tdep->RE_REGNUM));
+ (long) read_register (A1G_REGNUM) & 0xff,
+ (long) read_register (A1_REGNUM),
+ (long) read_register (M1_REGNUM),
+ (long) read_register (X1_REGNUM),
+ (long) read_register (Y1_REGNUM),
+ (long) read_register (RE_REGNUM));
}
-void sh_show_regs_command (char *args, int from_tty)
+static void
+sh_show_regs_command (char *args, int from_tty)
{
if (sh_show_regs)
- (*sh_show_regs)();
-}
-
-/* Index within `registers' of the first byte of the space for
- register N. */
-static int
-sh_default_register_byte (int reg_nr)
-{
- return (reg_nr * 4);
-}
-
-static int
-sh_sh4_register_byte (int reg_nr)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
- return (dr_reg_base_num (reg_nr) * 4);
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
- return (fv_reg_base_num (reg_nr) * 4);
- else
- return (reg_nr * 4);
-}
-
-/* Number of bytes of storage in the actual machine representation for
- register REG_NR. */
-static int
-sh_default_register_raw_size (int reg_nr)
-{
- return 4;
-}
-
-static int
-sh_sh4_register_raw_size (int reg_nr)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
- return 8;
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
- return 16;
- else
- return 4;
-}
-
-/* Number of bytes of storage in the program's representation
- for register N. */
-static int
-sh_register_virtual_size (int reg_nr)
-{
- return 4;
+ (*sh_show_regs) ();
}
/* Return the GDB type object for the "standard" data type
of data in register N. */
static struct type *
-sh_sh3e_register_virtual_type (int reg_nr)
+sh_sh3e_register_type (struct gdbarch *gdbarch, int reg_nr)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
if ((reg_nr >= FP0_REGNUM
- && (reg_nr <= tdep->FP_LAST_REGNUM))
- || (reg_nr == tdep->FPUL_REGNUM))
+ && (reg_nr <= FP_LAST_REGNUM)) || (reg_nr == FPUL_REGNUM))
return builtin_type_float;
else
return builtin_type_int;
}
static struct type *
-sh_sh4_register_virtual_type (int reg_nr)
+sh_sh4_register_type (struct gdbarch *gdbarch, int reg_nr)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
if ((reg_nr >= FP0_REGNUM
- && (reg_nr <= tdep->FP_LAST_REGNUM))
- || (reg_nr == tdep->FPUL_REGNUM))
+ && (reg_nr <= FP_LAST_REGNUM)) || (reg_nr == FPUL_REGNUM))
return builtin_type_float;
- else if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
+ else if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM)
return builtin_type_double;
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
+ else if (reg_nr >= FV0_REGNUM && reg_nr <= FV_LAST_REGNUM)
return sh_sh4_build_float_register_type (3);
else
return builtin_type_int;
}
static struct type *
-sh_default_register_virtual_type (int reg_nr)
+sh_default_register_type (struct gdbarch *gdbarch, int reg_nr)
{
return builtin_type_int;
}
static void
sh_sh4_register_convert_to_virtual (int regnum, struct type *type,
- char *from, char *to)
+ char *from, char *to)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (regnum >= tdep->DR0_REGNUM
- && regnum <= tdep->DR_LAST_REGNUM)
+ if (regnum >= DR0_REGNUM && regnum <= DR_LAST_REGNUM)
{
DOUBLEST val;
- floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, from, &val);
- store_floating (to, TYPE_LENGTH (type), val);
+ floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword,
+ from, &val);
+ store_typed_floating (to, type, val);
}
else
- error ("sh_register_convert_to_virtual called with non DR register number");
+ error
+ ("sh_register_convert_to_virtual called with non DR register number");
}
static void
sh_sh4_register_convert_to_raw (struct type *type, int regnum,
- char *from, char *to)
+ const void *from, void *to)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (regnum >= tdep->DR0_REGNUM
- && regnum <= tdep->DR_LAST_REGNUM)
+ if (regnum >= DR0_REGNUM && regnum <= DR_LAST_REGNUM)
{
- DOUBLEST val = extract_floating (from, TYPE_LENGTH(type));
- floatformat_from_doublest (&floatformat_ieee_double_littlebyte_bigword, &val, to);
+ DOUBLEST val = extract_typed_floating (from, type);
+ floatformat_from_doublest (&floatformat_ieee_double_littlebyte_bigword,
+ &val, to);
}
else
- error("sh_register_convert_to_raw called with non DR register number");
+ error ("sh_register_convert_to_raw called with non DR register number");
}
-void
-sh_pseudo_register_read (int reg_nr, char *buffer)
+/* For vectors of 4 floating point registers. */
+static int
+fv_reg_base_num (int fv_regnum)
+{
+ int fp_regnum;
+
+ fp_regnum = FP0_REGNUM + (fv_regnum - FV0_REGNUM) * 4;
+ return fp_regnum;
+}
+
+/* For double precision floating point registers, i.e 2 fp regs.*/
+static int
+dr_reg_base_num (int dr_regnum)
+{
+ int fp_regnum;
+
+ fp_regnum = FP0_REGNUM + (dr_regnum - DR0_REGNUM) * 2;
+ return fp_regnum;
+}
+
+static void
+sh_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
+ int reg_nr, void *buffer)
{
int base_regnum, portion;
- char *temp_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE);
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ char temp_buffer[MAX_REGISTER_SIZE];
- if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
+ if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM)
{
base_regnum = dr_reg_base_num (reg_nr);
- /* Build the value in the provided buffer. */
+ /* Build the value in the provided buffer. */
/* Read the real regs for which this one is an alias. */
for (portion = 0; portion < 2; portion++)
- regcache_read (base_regnum + portion,
- temp_buffer
- + REGISTER_RAW_SIZE (base_regnum) * portion);
+ regcache_raw_read (regcache, base_regnum + portion,
+ (temp_buffer
+ + register_size (gdbarch,
+ base_regnum) * portion));
/* We must pay attention to the endiannes. */
sh_sh4_register_convert_to_virtual (reg_nr,
- REGISTER_VIRTUAL_TYPE (reg_nr),
+ gdbarch_register_type (gdbarch,
+ reg_nr),
temp_buffer, buffer);
}
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
+ else if (reg_nr >= FV0_REGNUM && reg_nr <= FV_LAST_REGNUM)
{
base_regnum = fv_reg_base_num (reg_nr);
/* Read the real regs for which this one is an alias. */
for (portion = 0; portion < 4; portion++)
- regcache_read (base_regnum + portion,
- buffer + REGISTER_RAW_SIZE (base_regnum) * portion);
+ regcache_raw_read (regcache, base_regnum + portion,
+ ((char *) buffer
+ + register_size (gdbarch,
+ base_regnum) * portion));
}
}
static void
-sh4_register_read (struct gdbarch *gdbarch, int reg_nr, char *buffer)
-{
- if (reg_nr >= 0 && reg_nr < gdbarch_tdep (current_gdbarch)->DR0_REGNUM)
- /* It is a regular register. */
- regcache_read (reg_nr, buffer);
- else
- /* It is a pseudo register and we need to construct its value */
- sh_pseudo_register_read (reg_nr, buffer);
-}
-
-void
-sh_pseudo_register_write (int reg_nr, char *buffer)
+sh_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
+ int reg_nr, const void *buffer)
{
int base_regnum, portion;
- char *temp_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE);
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ char temp_buffer[MAX_REGISTER_SIZE];
- if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
+ if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM)
{
base_regnum = dr_reg_base_num (reg_nr);
/* We must pay attention to the endiannes. */
- sh_sh4_register_convert_to_raw (REGISTER_VIRTUAL_TYPE (reg_nr), reg_nr,
- buffer, temp_buffer);
+ sh_sh4_register_convert_to_raw (gdbarch_register_type (gdbarch, reg_nr),
+ reg_nr, buffer, temp_buffer);
/* Write the real regs for which this one is an alias. */
for (portion = 0; portion < 2; portion++)
- regcache_write (base_regnum + portion,
- temp_buffer + REGISTER_RAW_SIZE (base_regnum) * portion);
+ regcache_raw_write (regcache, base_regnum + portion,
+ (temp_buffer
+ + register_size (gdbarch,
+ base_regnum) * portion));
}
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
+ else if (reg_nr >= FV0_REGNUM && reg_nr <= FV_LAST_REGNUM)
{
base_regnum = fv_reg_base_num (reg_nr);
/* Write the real regs for which this one is an alias. */
for (portion = 0; portion < 4; portion++)
- regcache_write (base_regnum + portion,
- buffer + REGISTER_RAW_SIZE (base_regnum) * portion);
+ regcache_raw_write (regcache, base_regnum + portion,
+ ((char *) buffer
+ + register_size (gdbarch,
+ base_regnum) * portion));
}
}
-static void
-sh4_register_write (struct gdbarch *gdbarch, int reg_nr, char *buffer)
-{
- if (reg_nr >= 0 && reg_nr < gdbarch_tdep (current_gdbarch)->DR0_REGNUM)
- /* It is a regular register. */
- regcache_write (reg_nr, buffer);
- else
- /* It is a pseudo register and we need to construct its value */
- sh_pseudo_register_write (reg_nr, buffer);
-}
-
/* Floating point vector of 4 float registers. */
static void
-do_fv_register_info (int fv_regnum)
+do_fv_register_info (struct gdbarch *gdbarch, struct ui_file *file,
+ int fv_regnum)
{
int first_fp_reg_num = fv_reg_base_num (fv_regnum);
- printf_filtered ("fv%d\t0x%08x\t0x%08x\t0x%08x\t0x%08x\n",
- fv_regnum - gdbarch_tdep (current_gdbarch)->FV0_REGNUM,
- (int) read_register (first_fp_reg_num),
- (int) read_register (first_fp_reg_num + 1),
- (int) read_register (first_fp_reg_num + 2),
- (int) read_register (first_fp_reg_num + 3));
+ fprintf_filtered (file, "fv%d\t0x%08x\t0x%08x\t0x%08x\t0x%08x\n",
+ fv_regnum - FV0_REGNUM,
+ (int) read_register (first_fp_reg_num),
+ (int) read_register (first_fp_reg_num + 1),
+ (int) read_register (first_fp_reg_num + 2),
+ (int) read_register (first_fp_reg_num + 3));
}
/* Double precision registers. */
static void
-do_dr_register_info (int dr_regnum)
+do_dr_register_info (struct gdbarch *gdbarch, struct ui_file *file,
+ int dr_regnum)
{
int first_fp_reg_num = dr_reg_base_num (dr_regnum);
- printf_filtered ("dr%d\t0x%08x%08x\n",
- dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_REGNUM,
+ fprintf_filtered (file, "dr%d\t0x%08x%08x\n",
+ dr_regnum - DR0_REGNUM,
(int) read_register (first_fp_reg_num),
(int) read_register (first_fp_reg_num + 1));
}
static void
-sh_do_pseudo_register (int regnum)
+sh_print_pseudo_register (struct gdbarch *gdbarch, struct ui_file *file,
+ int regnum)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
if (regnum < NUM_REGS || regnum >= NUM_REGS + NUM_PSEUDO_REGS)
internal_error (__FILE__, __LINE__,
"Invalid pseudo register number %d\n", regnum);
- else if (regnum >= tdep->DR0_REGNUM
- && regnum < tdep->DR_LAST_REGNUM)
- do_dr_register_info (regnum);
- else if (regnum >= tdep->FV0_REGNUM
- && regnum <= tdep->FV_LAST_REGNUM)
- do_fv_register_info (regnum);
+ else if (regnum >= DR0_REGNUM && regnum <= DR_LAST_REGNUM)
+ do_dr_register_info (gdbarch, file, regnum);
+ else if (regnum >= FV0_REGNUM && regnum <= FV_LAST_REGNUM)
+ do_fv_register_info (gdbarch, file, regnum);
}
static void
-sh_do_fp_register (int regnum)
+sh_do_fp_register (struct gdbarch *gdbarch, struct ui_file *file, int regnum)
{ /* do values for FP (float) regs */
char *raw_buffer;
- double flt; /* double extracted from raw hex data */
+ double flt; /* double extracted from raw hex data */
int inv;
int j;
/* Allocate space for the float. */
- raw_buffer = (char *) alloca (REGISTER_RAW_SIZE (FP0_REGNUM));
+ raw_buffer = (char *) alloca (register_size (gdbarch, FP0_REGNUM));
/* Get the data in raw format. */
- if (!frame_register_read (selected_frame, regnum, raw_buffer))
+ if (!frame_register_read (get_selected_frame (), regnum, raw_buffer))
error ("can't read register %d (%s)", regnum, REGISTER_NAME (regnum));
- /* Get the register as a number */
+ /* Get the register as a number */
flt = unpack_double (builtin_type_float, raw_buffer, &inv);
/* Print the name and some spaces. */
- fputs_filtered (REGISTER_NAME (regnum), gdb_stdout);
- print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), gdb_stdout);
+ fputs_filtered (REGISTER_NAME (regnum), file);
+ print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), file);
/* Print the value. */
if (inv)
- printf_filtered ("<invalid float>");
+ fprintf_filtered (file, "<invalid float>");
else
- printf_filtered ("%-10.9g", flt);
+ fprintf_filtered (file, "%-10.9g", flt);
/* Print the fp register as hex. */
- printf_filtered ("\t(raw 0x");
- for (j = 0; j < REGISTER_RAW_SIZE (regnum); j++)
+ fprintf_filtered (file, "\t(raw 0x");
+ for (j = 0; j < register_size (gdbarch, regnum); j++)
{
register int idx = TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? j
- : REGISTER_RAW_SIZE (regnum) - 1 - j;
- printf_filtered ("%02x", (unsigned char) raw_buffer[idx]);
+ : register_size (gdbarch, regnum) - 1 - j;
+ fprintf_filtered (file, "%02x", (unsigned char) raw_buffer[idx]);
}
- printf_filtered (")");
- printf_filtered ("\n");
+ fprintf_filtered (file, ")");
+ fprintf_filtered (file, "\n");
}
static void
-sh_do_register (int regnum)
+sh_do_register (struct gdbarch *gdbarch, struct ui_file *file, int regnum)
{
- char raw_buffer[MAX_REGISTER_RAW_SIZE];
+ char raw_buffer[MAX_REGISTER_SIZE];
- fputs_filtered (REGISTER_NAME (regnum), gdb_stdout);
- print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), gdb_stdout);
+ fputs_filtered (REGISTER_NAME (regnum), file);
+ print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), file);
/* Get the data in raw format. */
- if (!frame_register_read (selected_frame, regnum, raw_buffer))
- printf_filtered ("*value not available*\n");
-
- val_print (REGISTER_VIRTUAL_TYPE (regnum), raw_buffer, 0, 0,
- gdb_stdout, 'x', 1, 0, Val_pretty_default);
- printf_filtered ("\t");
- val_print (REGISTER_VIRTUAL_TYPE (regnum), raw_buffer, 0, 0,
- gdb_stdout, 0, 1, 0, Val_pretty_default);
- printf_filtered ("\n");
+ if (!frame_register_read (get_selected_frame (), regnum, raw_buffer))
+ fprintf_filtered (file, "*value not available*\n");
+
+ val_print (gdbarch_register_type (gdbarch, regnum), raw_buffer, 0, 0,
+ file, 'x', 1, 0, Val_pretty_default);
+ fprintf_filtered (file, "\t");
+ val_print (gdbarch_register_type (gdbarch, regnum), raw_buffer, 0, 0,
+ file, 0, 1, 0, Val_pretty_default);
+ fprintf_filtered (file, "\n");
}
static void
-sh_print_register (int regnum)
+sh_print_register (struct gdbarch *gdbarch, struct ui_file *file, int regnum)
{
if (regnum < 0 || regnum >= NUM_REGS + NUM_PSEUDO_REGS)
internal_error (__FILE__, __LINE__,
else if (regnum >= 0 && regnum < NUM_REGS)
{
- if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (regnum)) == TYPE_CODE_FLT)
- sh_do_fp_register (regnum); /* FP regs */
+ if (TYPE_CODE (gdbarch_register_type (gdbarch, regnum)) ==
+ TYPE_CODE_FLT)
+ sh_do_fp_register (gdbarch, file, regnum); /* FP regs */
else
- sh_do_register (regnum); /* All other regs */
+ sh_do_register (gdbarch, file, regnum); /* All other regs */
}
else if (regnum < NUM_REGS + NUM_PSEUDO_REGS)
- do_pseudo_register (regnum);
+ {
+ sh_print_pseudo_register (gdbarch, file, regnum);
+ }
}
-void
-sh_do_registers_info (int regnum, int fpregs)
+static void
+sh_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file,
+ struct frame_info *frame, int regnum, int fpregs)
{
if (regnum != -1) /* do one specified register */
{
if (*(REGISTER_NAME (regnum)) == '\0')
error ("Not a valid register for the current processor type");
- sh_print_register (regnum);
+ sh_print_register (gdbarch, file, regnum);
}
else
/* do all (or most) registers */
processor, so don't display anything. */
if (REGISTER_NAME (regnum) == NULL
|| *(REGISTER_NAME (regnum)) == '\0')
- {
+ {
regnum++;
continue;
}
- if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (regnum)) == TYPE_CODE_FLT)
+ if (TYPE_CODE (gdbarch_register_type (gdbarch, regnum)) ==
+ TYPE_CODE_FLT)
{
if (fpregs)
{
/* true for "INFO ALL-REGISTERS" command */
- sh_do_fp_register (regnum); /* FP regs */
- regnum ++;
+ sh_do_fp_register (gdbarch, file, regnum); /* FP regs */
+ regnum++;
}
else
- regnum += (gdbarch_tdep (current_gdbarch)->FP_LAST_REGNUM - FP0_REGNUM); /* skip FP regs */
+ regnum += (FP_LAST_REGNUM - FP0_REGNUM); /* skip FP regs */
}
else
{
- sh_do_register (regnum); /* All other regs */
+ sh_do_register (gdbarch, file, regnum); /* All other regs */
regnum++;
}
}
if (fpregs)
while (regnum < NUM_REGS + NUM_PSEUDO_REGS)
{
- do_pseudo_register (regnum);
+ sh_print_pseudo_register (gdbarch, file, regnum);
regnum++;
}
}
lmo.r_debug_size = 8; /* 20 not actual size but all we need */
lmo.r_map_offset = 4;
- lmo.r_map_size = 4;
+ lmo.r_map_size = 4;
lmo.link_map_size = 20; /* 552 not actual size but all we need */
lmo.l_addr_offset = 0;
- lmo.l_addr_size = 4;
+ lmo.l_addr_size = 4;
lmo.l_name_offset = 4;
- lmo.l_name_size = 4;
+ lmo.l_name_size = 4;
lmo.l_next_offset = 12;
- lmo.l_next_size = 4;
+ lmo.l_next_size = 4;
lmo.l_prev_offset = 16;
- lmo.l_prev_size = 4;
+ lmo.l_prev_size = 4;
}
- return lmp;
+ return lmp;
}
#endif /* SVR4_SHARED_LIBS */
-\f
-/* This table matches the indices assigned to enum sh_osabi. Keep
- them in sync. */
-static const char * const sh_osabi_names[] =
-{
- "<unknown>",
- "GNU/Linux",
- "NetBSD ELF",
- NULL
-};
+static int
+sh_dsp_register_sim_regno (int nr)
+{
+ if (legacy_register_sim_regno (nr) < 0)
+ return legacy_register_sim_regno (nr);
+ if (nr >= DSR_REGNUM && nr <= Y1_REGNUM)
+ return nr - DSR_REGNUM + SIM_SH_DSR_REGNUM;
+ if (nr == MOD_REGNUM)
+ return SIM_SH_MOD_REGNUM;
+ if (nr == RS_REGNUM)
+ return SIM_SH_RS_REGNUM;
+ if (nr == RE_REGNUM)
+ return SIM_SH_RE_REGNUM;
+ if (nr >= R0_BANK_REGNUM && nr <= R7_BANK_REGNUM)
+ return nr - R0_BANK_REGNUM + SIM_SH_R0_BANK_REGNUM;
+ return nr;
+}
+
+static struct sh_frame_cache *
+sh_alloc_frame_cache (void)
+{
+ struct sh_frame_cache *cache;
+ int i;
+
+ cache = FRAME_OBSTACK_ZALLOC (struct sh_frame_cache);
+
+ /* Base address. */
+ cache->base = 0;
+ cache->saved_sp = 0;
+ cache->sp_offset = 0;
+ cache->pc = 0;
+
+ /* Frameless until proven otherwise. */
+ cache->uses_fp = 0;
+
+ /* Saved registers. We initialize these to -1 since zero is a valid
+ offset (that's where fp is supposed to be stored). */
+ for (i = 0; i < SH_NUM_REGS; i++)
+ {
+ cache->saved_regs[i] = -1;
+ }
-static void
-process_note_abi_tag_sections (bfd *abfd, asection *sect, void *obj)
+ return cache;
+}
+
+static struct sh_frame_cache *
+sh_frame_cache (struct frame_info *next_frame, void **this_cache)
{
- enum sh_osabi *os_ident_ptr = obj;
- const char *name;
- unsigned int sectsize;
+ struct sh_frame_cache *cache;
+ CORE_ADDR current_pc;
+ int i;
- name = bfd_get_section_name (abfd, sect);
- sectsize = bfd_section_size (abfd, sect);
+ if (*this_cache)
+ return *this_cache;
- if (strcmp (name, ".note.ABI-tag") == 0 && sectsize > 0)
- {
- unsigned int name_length, data_length, note_type;
- char *note;
+ cache = sh_alloc_frame_cache ();
+ *this_cache = cache;
- /* If the section is larger than this, it's probably not what we are
- looking for. */
- if (sectsize > 128)
- sectsize = 128;
+ /* In principle, for normal frames, fp holds the frame pointer,
+ which holds the base address for the current stack frame.
+ However, for functions that don't need it, the frame pointer is
+ optional. For these "frameless" functions the frame pointer is
+ actually the frame pointer of the calling frame. */
+ cache->base = frame_unwind_register_unsigned (next_frame, FP_REGNUM);
+ if (cache->base == 0)
+ return cache;
- note = alloca (sectsize);
+ cache->pc = frame_func_unwind (next_frame);
+ current_pc = frame_pc_unwind (next_frame);
+ if (cache->pc != 0)
+ sh_analyze_prologue (cache->pc, current_pc, cache);
- bfd_get_section_contents (abfd, sect, note,
- (file_ptr) 0, (bfd_size_type) sectsize);
+ if (!cache->uses_fp)
+ {
+ /* We didn't find a valid frame, which means that CACHE->base
+ currently holds the frame pointer for our calling frame. If
+ we're at the start of a function, or somewhere half-way its
+ prologue, the function's frame probably hasn't been fully
+ setup yet. Try to reconstruct the base address for the stack
+ frame by looking at the stack pointer. For truly "frameless"
+ functions this might work too. */
+ cache->base = frame_unwind_register_unsigned (next_frame, SP_REGNUM);
+ }
- name_length = bfd_h_get_32 (abfd, note);
- data_length = bfd_h_get_32 (abfd, note + 4);
- note_type = bfd_h_get_32 (abfd, note + 8);
+ /* Now that we have the base address for the stack frame we can
+ calculate the value of sp in the calling frame. */
+ cache->saved_sp = cache->base + cache->sp_offset;
- if (name_length == 4 && data_length == 16 && note_type == NT_GNU_ABI_TAG
- && strcmp (note + 12, "GNU") == 0)
- {
- int os_number = bfd_h_get_32 (abfd, note + 16);
+ /* Adjust all the saved registers such that they contain addresses
+ instead of offsets. */
+ for (i = 0; i < SH_NUM_REGS; i++)
+ if (cache->saved_regs[i] != -1)
+ cache->saved_regs[i] = cache->saved_sp - cache->saved_regs[i] - 4;
- /* The case numbers are from abi-tags in glibc. */
- switch (os_number)
- {
- case GNU_ABI_TAG_LINUX:
- *os_ident_ptr = SH_OSABI_LINUX;
- break;
-
- case GNU_ABI_TAG_HURD:
- internal_error
- (__FILE__, __LINE__,
- "process_note_abi_sections: Hurd objects not supported");
- break;
-
- case GNU_ABI_TAG_SOLARIS:
- internal_error
- (__FILE__, __LINE__,
- "process_note_abi_sections: Solaris objects not supported");
- break;
-
- default:
- internal_error
- (__FILE__, __LINE__,
- "process_note_abi_sections: unknown OS number %d",
- os_number);
- }
- }
- }
- /* NetBSD uses a similar trick. */
- else if (strcmp (name, ".note.netbsd.ident") == 0 && sectsize > 0)
- {
- unsigned int name_length, desc_length, note_type;
- char *note;
+ return cache;
+}
- /* If the section is larger than this, it's probably not what we are
- looking for. */
- if (sectsize > 128)
- sectsize = 128;
+static void
+sh_frame_prev_register (struct frame_info *next_frame, void **this_cache,
+ int regnum, int *optimizedp,
+ enum lval_type *lvalp, CORE_ADDR *addrp,
+ int *realnump, void *valuep)
+{
+ struct sh_frame_cache *cache = sh_frame_cache (next_frame, this_cache);
- note = alloca (sectsize);
+ gdb_assert (regnum >= 0);
- bfd_get_section_contents (abfd, sect, note,
- (file_ptr) 0, (bfd_size_type) sectsize);
+ if (regnum == SP_REGNUM && cache->saved_sp)
+ {
+ *optimizedp = 0;
+ *lvalp = not_lval;
+ *addrp = 0;
+ *realnump = -1;
+ if (valuep)
+ {
+ /* Store the value. */
+ store_unsigned_integer (valuep, 4, cache->saved_sp);
+ }
+ return;
+ }
- name_length = bfd_h_get_32 (abfd, note);
- desc_length = bfd_h_get_32 (abfd, note + 4);
- note_type = bfd_h_get_32 (abfd, note + 8);
+ /* The PC of the previous frame is stored in the PR register of
+ the current frame. Frob regnum so that we pull the value from
+ the correct place. */
+ if (regnum == PC_REGNUM)
+ regnum = PR_REGNUM;
- if (name_length == 7 && desc_length == 4 && note_type == NT_NETBSD_IDENT
- && strcmp (note + 12, "NetBSD") == 0)
- /* XXX Should we check the version here?
- Probably not necessary yet. */
- *os_ident_ptr = SH_OSABI_NETBSD_ELF;
+ if (regnum < SH_NUM_REGS && cache->saved_regs[regnum] != -1)
+ {
+ *optimizedp = 0;
+ *lvalp = lval_memory;
+ *addrp = cache->saved_regs[regnum];
+ *realnump = -1;
+ if (valuep)
+ {
+ /* Read the value in from memory. */
+ read_memory (*addrp, valuep,
+ register_size (current_gdbarch, regnum));
+ }
+ return;
}
+
+ frame_register_unwind (next_frame, regnum,
+ optimizedp, lvalp, addrp, realnump, valuep);
}
-static int
-get_elfosabi (bfd *abfd)
+static void
+sh_frame_this_id (struct frame_info *next_frame, void **this_cache,
+ struct frame_id *this_id)
{
- int elfosabi;
- enum sh_osabi sh_osabi = SH_OSABI_UNKNOWN;
+ struct sh_frame_cache *cache = sh_frame_cache (next_frame, this_cache);
- elfosabi = elf_elfheader (abfd)->e_ident[EI_OSABI];
-
- switch (elfosabi)
- {
- case ELFOSABI_NONE:
- /* When elfosabi is 0 (ELFOSABI_NONE), this is supposed to indicate
- that we're on a SYSV system. However, some systems use note sections
- to record OS/ABI info, but leave e_ident[EI_OSABI] zero. So we
- have to check the note sections too. */
- bfd_map_over_sections (abfd,
- process_note_abi_tag_sections,
- &sh_osabi);
- break;
+ /* This marks the outermost frame. */
+ if (cache->base == 0)
+ return;
- case ELFOSABI_NETBSD:
- sh_osabi = SH_OSABI_NETBSD_ELF;
- break;
+ *this_id = frame_id_build (cache->saved_sp, cache->pc);
+}
- case ELFOSABI_LINUX:
- sh_osabi = SH_OSABI_LINUX;
- break;
- }
+static const struct frame_unwind sh_frame_unwind = {
+ NORMAL_FRAME,
+ sh_frame_this_id,
+ sh_frame_prev_register
+};
- return (sh_osabi);
+static const struct frame_unwind *
+sh_frame_sniffer (struct frame_info *next_frame)
+{
+ return &sh_frame_unwind;
}
-struct sh_osabi_handler
+static CORE_ADDR
+sh_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
{
- struct sh_osabi_handler *next;
- enum sh_osabi abi;
- void (*init_osabi)(struct gdbarch_info, struct gdbarch *);
-};
+ return frame_unwind_register_unsigned (next_frame, SP_REGNUM);
+}
-struct sh_osabi_handler *sh_osabi_handler_list = NULL;
+static CORE_ADDR
+sh_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
+{
+ return frame_unwind_register_unsigned (next_frame, PC_REGNUM);
+}
-void
-sh_gdbarch_register_os_abi (enum sh_osabi abi,
- void (*init_osabi)(struct gdbarch_info,
- struct gdbarch *))
+static struct frame_id
+sh_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame)
{
- struct sh_osabi_handler **handler_p;
+ return frame_id_build (sh_unwind_sp (gdbarch, next_frame),
+ frame_pc_unwind (next_frame));
+}
- for (handler_p = &sh_osabi_handler_list; *handler_p != NULL;
- handler_p = &(*handler_p)->next)
- {
- if ((*handler_p)->abi == abi)
- {
- internal_error
- (__FILE__, __LINE__,
- "sh_gdbarch_register_os_abi: A handler for this ABI variant "
- "(%d) has already been registered", (int) abi);
- /* If user wants to continue, override previous definition. */
- (*handler_p)->init_osabi = init_osabi;
- return;
- }
- }
+static CORE_ADDR
+sh_frame_base_address (struct frame_info *next_frame, void **this_cache)
+{
+ struct sh_frame_cache *cache = sh_frame_cache (next_frame, this_cache);
- (*handler_p)
- = (struct sh_osabi_handler *) xmalloc (sizeof (struct sh_osabi_handler));
- (*handler_p)->next = NULL;
- (*handler_p)->abi = abi;
- (*handler_p)->init_osabi = init_osabi;
+ return cache->base;
}
-static gdbarch_init_ftype sh_gdbarch_init;
+static const struct frame_base sh_frame_base = {
+ &sh_frame_unwind,
+ sh_frame_base_address,
+ sh_frame_base_address,
+ sh_frame_base_address
+};
-static struct gdbarch *
-sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
+/* The epilogue is defined here as the area at the end of a function,
+ either on the `ret' instruction itself or after an instruction which
+ destroys the function's stack frame. */
+static int
+sh_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc)
{
- static LONGEST sh_call_dummy_words[] = {0};
- struct gdbarch *gdbarch;
- struct gdbarch_tdep *tdep;
- gdbarch_register_name_ftype *sh_register_name;
- gdbarch_store_return_value_ftype *sh_store_return_value;
- gdbarch_register_virtual_type_ftype *sh_register_virtual_type;
- enum sh_osabi sh_osabi = SH_OSABI_UNKNOWN;
- struct sh_osabi_handler *osabi_handler;
+ CORE_ADDR func_addr = 0, func_end = 0;
- /* Try to determine the ABI of the object we are loading. */
-
- if (info.abfd != NULL)
+ if (find_pc_partial_function (pc, NULL, &func_addr, &func_end))
{
- switch (bfd_get_flavour (info.abfd))
+ ULONGEST inst;
+ /* The sh epilogue is max. 14 bytes long. Give another 14 bytes
+ for a nop and some fixed data (e.g. big offsets) which are
+ unfortunately also treated as part of the function (which
+ means, they are below func_end. */
+ CORE_ADDR addr = func_end - 28;
+ if (addr < func_addr + 4)
+ addr = func_addr + 4;
+ if (pc < addr)
+ return 0;
+
+ /* First search forward until hitting an rts. */
+ while (addr < func_end
+ && !IS_RTS (read_memory_unsigned_integer (addr, 2)))
+ addr += 2;
+ if (addr >= func_end)
+ return 0;
+
+ /* At this point we should find a mov.l @r15+,r14 instruction,
+ either before or after the rts. If not, then the function has
+ probably no "normal" epilogue and we bail out here. */
+ inst = read_memory_unsigned_integer (addr - 2, 2);
+ if (IS_RESTORE_FP (read_memory_unsigned_integer (addr - 2, 2)))
+ addr -= 2;
+ else if (!IS_RESTORE_FP (read_memory_unsigned_integer (addr + 2, 2)))
+ return 0;
+
+ /* Step over possible lds.l @r15+,pr. */
+ inst = read_memory_unsigned_integer (addr - 2, 2);
+ if (IS_LDS (inst))
{
- case bfd_target_elf_flavour:
- sh_osabi = get_elfosabi (info.abfd);
- break;
-
- default:
- /* Just leave it as "unkown". */
- break;
+ addr -= 2;
+ inst = read_memory_unsigned_integer (addr - 2, 2);
}
- }
- /* Find a candidate among the list of pre-declared architectures. */
- for (arches = gdbarch_list_lookup_by_info (arches, &info);
- arches != NULL;
- arches = gdbarch_list_lookup_by_info (arches->next, &info))
- {
- /* Make sure the ABI selection matches. */
- tdep = gdbarch_tdep (arches->gdbarch);
- if (tdep && tdep->sh_osabi == sh_osabi)
- return arches->gdbarch;
- }
+ /* Step over possible mov r14,r15. */
+ if (IS_MOV_FP_SP (inst))
+ {
+ addr -= 2;
+ inst = read_memory_unsigned_integer (addr - 2, 2);
+ }
- /* None found, create a new architecture from the information
- provided. */
- tdep = XMALLOC (struct gdbarch_tdep);
- gdbarch = gdbarch_alloc (&info, tdep);
+ /* Now check for FP adjustments, using add #imm,r14 or add rX, r14
+ instructions. */
+ while (addr > func_addr + 4
+ && (IS_ADD_REG_TO_FP (inst) || IS_ADD_IMM_FP (inst)))
+ {
+ addr -= 2;
+ inst = read_memory_unsigned_integer (addr - 2, 2);
+ }
- tdep->sh_osabi = sh_osabi;
- if (sh_osabi < SH_OSABI_INVALID)
- tdep->osabi_name = sh_osabi_names[sh_osabi];
- else
- {
- internal_error (__FILE__, __LINE__, "Invalid setting of sh_osabi %d",
- (int) sh_osabi);
- tdep->osabi_name = "<invalid>";
+ if (pc >= addr)
+ return 1;
}
+ return 0;
+}
- /* Initialize the register numbers that are not common to all the
- variants to -1, if necessary thse will be overwritten in the case
- statement below. */
- tdep->FPUL_REGNUM = -1;
- tdep->FPSCR_REGNUM = -1;
- tdep->PR_REGNUM = 17;
- tdep->SR_REGNUM = 22;
- tdep->DSR_REGNUM = -1;
- tdep->FP_LAST_REGNUM = -1;
- tdep->A0G_REGNUM = -1;
- tdep->A0_REGNUM = -1;
- tdep->A1G_REGNUM = -1;
- tdep->A1_REGNUM = -1;
- tdep->M0_REGNUM = -1;
- tdep->M1_REGNUM = -1;
- tdep->X0_REGNUM = -1;
- tdep->X1_REGNUM = -1;
- tdep->Y0_REGNUM = -1;
- tdep->Y1_REGNUM = -1;
- tdep->MOD_REGNUM = -1;
- tdep->RS_REGNUM = -1;
- tdep->RE_REGNUM = -1;
- tdep->SSR_REGNUM = -1;
- tdep->SPC_REGNUM = -1;
- tdep->DR0_REGNUM = -1;
- tdep->DR_LAST_REGNUM = -1;
- tdep->FV0_REGNUM = -1;
- tdep->FV_LAST_REGNUM = -1;
- tdep->ARG0_REGNUM = 4;
- tdep->ARGLAST_REGNUM = 7;
- tdep->RETURN_REGNUM = 0;
- tdep->FLOAT_ARGLAST_REGNUM = -1;
+static gdbarch_init_ftype sh_gdbarch_init;
- set_gdbarch_fp0_regnum (gdbarch, -1);
- set_gdbarch_num_pseudo_regs (gdbarch, 0);
- set_gdbarch_max_register_raw_size (gdbarch, 4);
- set_gdbarch_max_register_virtual_size (gdbarch, 4);
- set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT);
- set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
- set_gdbarch_num_regs (gdbarch, SH_DEFAULT_NUM_REGS);
- set_gdbarch_sp_regnum (gdbarch, 15);
- set_gdbarch_fp_regnum (gdbarch, 14);
- set_gdbarch_pc_regnum (gdbarch, 16);
- set_gdbarch_register_size (gdbarch, 4);
- set_gdbarch_register_bytes (gdbarch, SH_DEFAULT_NUM_REGS * 4);
- set_gdbarch_do_registers_info (gdbarch, sh_do_registers_info);
- set_gdbarch_breakpoint_from_pc (gdbarch, sh_breakpoint_from_pc);
- set_gdbarch_frame_chain (gdbarch, sh_frame_chain);
- set_gdbarch_get_saved_register (gdbarch, generic_get_saved_register);
- set_gdbarch_init_extra_frame_info (gdbarch, sh_init_extra_frame_info);
- set_gdbarch_extract_return_value (gdbarch, sh_extract_return_value);
- set_gdbarch_push_arguments (gdbarch, sh_push_arguments);
- set_gdbarch_store_struct_return (gdbarch, sh_store_struct_return);
- set_gdbarch_use_struct_convention (gdbarch, sh_use_struct_convention);
- set_gdbarch_extract_struct_value_address (gdbarch, sh_extract_struct_value_address);
- set_gdbarch_pop_frame (gdbarch, sh_pop_frame);
- set_gdbarch_print_insn (gdbarch, gdb_print_insn_sh);
- skip_prologue_hard_way = sh_skip_prologue_hard_way;
- do_pseudo_register = sh_do_pseudo_register;
+static struct gdbarch *
+sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
+{
+ struct gdbarch *gdbarch;
+ sh_show_regs = sh_generic_show_regs;
switch (info.bfd_arch_info->mach)
{
- case bfd_mach_sh:
- sh_register_name = sh_sh_register_name;
- sh_show_regs = sh_generic_show_regs;
- sh_store_return_value = sh_default_store_return_value;
- sh_register_virtual_type = sh_default_register_virtual_type;
- set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
- set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_register_byte (gdbarch, sh_default_register_byte);
+ case bfd_mach_sh2e:
+ sh_show_regs = sh2e_show_regs;
break;
- case bfd_mach_sh2:
- sh_register_name = sh_sh_register_name;
- sh_show_regs = sh_generic_show_regs;
- sh_store_return_value = sh_default_store_return_value;
- sh_register_virtual_type = sh_default_register_virtual_type;
- set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
- set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_register_byte (gdbarch, sh_default_register_byte);
- break;
case bfd_mach_sh_dsp:
- sh_register_name = sh_sh_dsp_register_name;
sh_show_regs = sh_dsp_show_regs;
- sh_store_return_value = sh_default_store_return_value;
- sh_register_virtual_type = sh_default_register_virtual_type;
- set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
- set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_register_byte (gdbarch, sh_default_register_byte);
- tdep->DSR_REGNUM = 24;
- tdep->A0G_REGNUM = 25;
- tdep->A0_REGNUM = 26;
- tdep->A1G_REGNUM = 27;
- tdep->A1_REGNUM = 28;
- tdep->M0_REGNUM = 29;
- tdep->M1_REGNUM = 30;
- tdep->X0_REGNUM = 31;
- tdep->X1_REGNUM = 32;
- tdep->Y0_REGNUM = 33;
- tdep->Y1_REGNUM = 34;
- tdep->MOD_REGNUM = 40;
- tdep->RS_REGNUM = 43;
- tdep->RE_REGNUM = 44;
break;
+
case bfd_mach_sh3:
- sh_register_name = sh_sh3_register_name;
sh_show_regs = sh3_show_regs;
- sh_store_return_value = sh_default_store_return_value;
- sh_register_virtual_type = sh_default_register_virtual_type;
- set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
- set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_register_byte (gdbarch, sh_default_register_byte);
- tdep->SSR_REGNUM = 41;
- tdep->SPC_REGNUM = 42;
break;
+
case bfd_mach_sh3e:
- sh_register_name = sh_sh3e_register_name;
sh_show_regs = sh3e_show_regs;
- sh_store_return_value = sh3e_sh4_store_return_value;
- sh_register_virtual_type = sh_sh3e_register_virtual_type;
- set_gdbarch_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs);
- set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_register_byte (gdbarch, sh_default_register_byte);
- set_gdbarch_extract_return_value (gdbarch, sh3e_sh4_extract_return_value);
- set_gdbarch_fp0_regnum (gdbarch, 25);
- tdep->FPUL_REGNUM = 23;
- tdep->FPSCR_REGNUM = 24;
- tdep->FP_LAST_REGNUM = 40;
- tdep->SSR_REGNUM = 41;
- tdep->SPC_REGNUM = 42;
break;
+
case bfd_mach_sh3_dsp:
- sh_register_name = sh_sh3_dsp_register_name;
sh_show_regs = sh3_dsp_show_regs;
- sh_store_return_value = sh_default_store_return_value;
- sh_register_virtual_type = sh_default_register_virtual_type;
- set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
- set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_register_byte (gdbarch, sh_default_register_byte);
- tdep->DSR_REGNUM = 24;
- tdep->A0G_REGNUM = 25;
- tdep->A0_REGNUM = 26;
- tdep->A1G_REGNUM = 27;
- tdep->A1_REGNUM = 28;
- tdep->M0_REGNUM = 29;
- tdep->M1_REGNUM = 30;
- tdep->X0_REGNUM = 31;
- tdep->X1_REGNUM = 32;
- tdep->Y0_REGNUM = 33;
- tdep->Y1_REGNUM = 34;
- tdep->MOD_REGNUM = 40;
- tdep->RS_REGNUM = 43;
- tdep->RE_REGNUM = 44;
- tdep->SSR_REGNUM = 41;
- tdep->SPC_REGNUM = 42;
break;
+
case bfd_mach_sh4:
- sh_register_name = sh_sh4_register_name;
sh_show_regs = sh4_show_regs;
- sh_store_return_value = sh3e_sh4_store_return_value;
- sh_register_virtual_type = sh_sh4_register_virtual_type;
- set_gdbarch_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs);
- set_gdbarch_extract_return_value (gdbarch, sh3e_sh4_extract_return_value);
- set_gdbarch_fp0_regnum (gdbarch, 25);
- set_gdbarch_register_raw_size (gdbarch, sh_sh4_register_raw_size);
- set_gdbarch_register_virtual_size (gdbarch, sh_sh4_register_raw_size);
- set_gdbarch_register_byte (gdbarch, sh_sh4_register_byte);
- set_gdbarch_num_pseudo_regs (gdbarch, 12);
- set_gdbarch_max_register_raw_size (gdbarch, 4 * 4);
- set_gdbarch_max_register_virtual_size (gdbarch, 4 * 4);
- set_gdbarch_register_read (gdbarch, sh4_register_read);
- set_gdbarch_register_write (gdbarch, sh4_register_write);
- tdep->FPUL_REGNUM = 23;
- tdep->FPSCR_REGNUM = 24;
- tdep->FP_LAST_REGNUM = 40;
- tdep->SSR_REGNUM = 41;
- tdep->SPC_REGNUM = 42;
- tdep->DR0_REGNUM = 59;
- tdep->DR_LAST_REGNUM = 66;
- tdep->FV0_REGNUM = 67;
- tdep->FV_LAST_REGNUM = 70;
- break;
- default:
- sh_register_name = sh_generic_register_name;
- sh_show_regs = sh_generic_show_regs;
- sh_store_return_value = sh_default_store_return_value;
- sh_register_virtual_type = sh_default_register_virtual_type;
- set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
- set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_register_byte (gdbarch, sh_default_register_byte);
break;
+
+ case bfd_mach_sh5:
+ sh_show_regs = sh64_show_regs;
+ /* SH5 is handled entirely in sh64-tdep.c */
+ return sh64_gdbarch_init (info, arches);
}
- set_gdbarch_read_pc (gdbarch, generic_target_read_pc);
- set_gdbarch_write_pc (gdbarch, generic_target_write_pc);
- set_gdbarch_read_fp (gdbarch, generic_target_read_fp);
- set_gdbarch_read_sp (gdbarch, generic_target_read_sp);
- set_gdbarch_write_sp (gdbarch, generic_target_write_sp);
+ /* If there is already a candidate, use it. */
+ arches = gdbarch_list_lookup_by_info (arches, &info);
+ if (arches != NULL)
+ return arches->gdbarch;
- set_gdbarch_register_name (gdbarch, sh_register_name);
- set_gdbarch_register_virtual_type (gdbarch, sh_register_virtual_type);
+ /* None found, create a new architecture from the information
+ provided. */
+ gdbarch = gdbarch_alloc (&info, NULL);
set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT);
set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT);
+ set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT);
set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
- set_gdbarch_long_double_bit (gdbarch, 16 * TARGET_CHAR_BIT);/*??should be 8?*/
-
- set_gdbarch_use_generic_dummy_frames (gdbarch, 1);
- set_gdbarch_call_dummy_length (gdbarch, 0);
- set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
- set_gdbarch_call_dummy_address (gdbarch, entry_point_address);
- set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1); /*???*/
- set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0);
- set_gdbarch_call_dummy_start_offset (gdbarch, 0);
- set_gdbarch_pc_in_call_dummy (gdbarch, generic_pc_in_call_dummy);
- set_gdbarch_call_dummy_words (gdbarch, sh_call_dummy_words);
- set_gdbarch_sizeof_call_dummy_words (gdbarch, sizeof (sh_call_dummy_words));
- set_gdbarch_call_dummy_p (gdbarch, 1);
- set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
- set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy);
- set_gdbarch_coerce_float_to_double (gdbarch,
- sh_coerce_float_to_double);
-
- set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame);
- set_gdbarch_push_return_address (gdbarch, sh_push_return_address);
-
- set_gdbarch_store_return_value (gdbarch, sh_store_return_value);
+ set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
+ set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
+
+ set_gdbarch_num_regs (gdbarch, SH_NUM_REGS);
+ set_gdbarch_sp_regnum (gdbarch, 15);
+ set_gdbarch_pc_regnum (gdbarch, 16);
+ set_gdbarch_fp0_regnum (gdbarch, -1);
+ set_gdbarch_num_pseudo_regs (gdbarch, 0);
+
+ set_gdbarch_register_type (gdbarch, sh_default_register_type);
+
+ set_gdbarch_print_registers_info (gdbarch, sh_print_registers_info);
+
+ set_gdbarch_breakpoint_from_pc (gdbarch, sh_breakpoint_from_pc);
+ set_gdbarch_use_struct_convention (gdbarch, sh_use_struct_convention);
+
+ set_gdbarch_print_insn (gdbarch, gdb_print_insn_sh);
+ set_gdbarch_register_sim_regno (gdbarch, legacy_register_sim_regno);
+
+ set_gdbarch_write_pc (gdbarch, generic_target_write_pc);
+
+ set_gdbarch_store_return_value (gdbarch, sh_default_store_return_value);
+ set_gdbarch_extract_return_value (gdbarch, sh_default_extract_return_value);
+ set_gdbarch_extract_struct_value_address (gdbarch,
+ sh_extract_struct_value_address);
+
set_gdbarch_skip_prologue (gdbarch, sh_skip_prologue);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
set_gdbarch_decr_pc_after_break (gdbarch, 0);
set_gdbarch_function_start_offset (gdbarch, 0);
+ set_gdbarch_push_dummy_code (gdbarch, sh_push_dummy_code);
+ set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_nofpu);
+
set_gdbarch_frame_args_skip (gdbarch, 0);
- set_gdbarch_frameless_function_invocation (gdbarch, frameless_look_for_prologue);
- set_gdbarch_frame_chain_valid (gdbarch, generic_file_frame_chain_valid);
- set_gdbarch_frame_saved_pc (gdbarch, sh_frame_saved_pc);
- set_gdbarch_frame_args_address (gdbarch, default_frame_address);
- set_gdbarch_frame_locals_address (gdbarch, default_frame_address);
- set_gdbarch_saved_pc_after_call (gdbarch, sh_saved_pc_after_call);
- set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown);
+ set_gdbarch_frameless_function_invocation (gdbarch,
+ frameless_look_for_prologue);
set_gdbarch_believe_pcc_promotion (gdbarch, 1);
- /* Hook in ABI-specific overrides, if they have been registered. If
- the ABI is unknown, this is probably an embedded target, so we
- should not warn about this situation. */
- if (sh_osabi != SH_OSABI_UNKNOWN)
+ set_gdbarch_frame_align (gdbarch, sh_frame_align);
+ set_gdbarch_unwind_sp (gdbarch, sh_unwind_sp);
+ set_gdbarch_unwind_pc (gdbarch, sh_unwind_pc);
+ set_gdbarch_unwind_dummy_id (gdbarch, sh_unwind_dummy_id);
+ frame_base_set_default (gdbarch, &sh_frame_base);
+
+ set_gdbarch_in_function_epilogue_p (gdbarch, sh_in_function_epilogue_p);
+
+ switch (info.bfd_arch_info->mach)
{
- for (osabi_handler = sh_osabi_handler_list; osabi_handler != NULL;
- osabi_handler = osabi_handler->next)
- if (osabi_handler->abi == sh_osabi)
- break;
+ case bfd_mach_sh:
+ set_gdbarch_register_name (gdbarch, sh_sh_register_name);
+ break;
- if (osabi_handler)
- osabi_handler->init_osabi (info, gdbarch);
- else
- {
- /* We assume that if GDB_MULTI_ARCH is less than
- GDB_MULTI_ARCH_TM that an ABI variant can be supported by
- overriding definitions in this file. */
- if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL)
- fprintf_filtered
- (gdb_stderr,
- "A handler for the ABI variant \"%s\" is not built into this "
- "configuration of GDB. "
- "Attempting to continue with the default SuperH settings",
- sh_osabi_names[sh_osabi]);
- }
- }
+ case bfd_mach_sh2:
+ set_gdbarch_register_name (gdbarch, sh_sh_register_name);
+ break;
- return gdbarch;
-}
+ case bfd_mach_sh2e:
+ /* doubles on sh2e and sh3e are actually 4 byte. */
+ set_gdbarch_double_bit (gdbarch, 4 * TARGET_CHAR_BIT);
-static void
-sh_dump_tdep (struct gdbarch *current_gdbarch, struct ui_file *file)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ set_gdbarch_register_name (gdbarch, sh_sh2e_register_name);
+ set_gdbarch_register_type (gdbarch, sh_sh3e_register_type);
+ set_gdbarch_fp0_regnum (gdbarch, 25);
+ set_gdbarch_store_return_value (gdbarch, sh3e_sh4_store_return_value);
+ set_gdbarch_extract_return_value (gdbarch,
+ sh3e_sh4_extract_return_value);
+ set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu);
+ break;
- if (tdep == NULL)
- return;
+ case bfd_mach_sh_dsp:
+ set_gdbarch_register_name (gdbarch, sh_sh_dsp_register_name);
+ set_gdbarch_register_sim_regno (gdbarch, sh_dsp_register_sim_regno);
+ break;
- if (tdep->osabi_name != NULL)
- fprintf_unfiltered (file, "sh_dump_tdep: OS ABI = %s\n", tdep->osabi_name);
- else
- internal_error (__FILE__, __LINE__,
- "sh_dump_tdep: illegal setting of tdep->sh_osabi (%d)",
- (int) tdep->sh_osabi);
+ case bfd_mach_sh3:
+ set_gdbarch_register_name (gdbarch, sh_sh3_register_name);
+ break;
+
+ case bfd_mach_sh3e:
+ /* doubles on sh2e and sh3e are actually 4 byte. */
+ set_gdbarch_double_bit (gdbarch, 4 * TARGET_CHAR_BIT);
+
+ set_gdbarch_register_name (gdbarch, sh_sh3e_register_name);
+ set_gdbarch_register_type (gdbarch, sh_sh3e_register_type);
+ set_gdbarch_fp0_regnum (gdbarch, 25);
+ set_gdbarch_store_return_value (gdbarch, sh3e_sh4_store_return_value);
+ set_gdbarch_extract_return_value (gdbarch,
+ sh3e_sh4_extract_return_value);
+ set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu);
+ break;
+
+ case bfd_mach_sh3_dsp:
+ set_gdbarch_register_name (gdbarch, sh_sh3_dsp_register_name);
+ set_gdbarch_register_sim_regno (gdbarch, sh_dsp_register_sim_regno);
+ break;
+
+ case bfd_mach_sh4:
+ set_gdbarch_register_name (gdbarch, sh_sh4_register_name);
+ set_gdbarch_register_type (gdbarch, sh_sh4_register_type);
+ set_gdbarch_fp0_regnum (gdbarch, 25);
+ set_gdbarch_num_pseudo_regs (gdbarch, 12);
+ set_gdbarch_pseudo_register_read (gdbarch, sh_pseudo_register_read);
+ set_gdbarch_pseudo_register_write (gdbarch, sh_pseudo_register_write);
+ set_gdbarch_store_return_value (gdbarch, sh3e_sh4_store_return_value);
+ set_gdbarch_extract_return_value (gdbarch,
+ sh3e_sh4_extract_return_value);
+ set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu);
+ break;
+
+ default:
+ set_gdbarch_register_name (gdbarch, sh_generic_register_name);
+ break;
+ }
+
+ /* Hook in ABI-specific overrides, if they have been registered. */
+ gdbarch_init_osabi (info, gdbarch);
+
+ frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
+ frame_unwind_append_sniffer (gdbarch, sh_frame_sniffer);
+
+ return gdbarch;
}
+extern initialize_file_ftype _initialize_sh_tdep; /* -Wmissing-prototypes */
+
void
_initialize_sh_tdep (void)
{
struct cmd_list_element *c;
-
- gdbarch_register (bfd_arch_sh, sh_gdbarch_init, sh_dump_tdep);
+
+ gdbarch_register (bfd_arch_sh, sh_gdbarch_init, NULL);
add_com ("regs", class_vars, sh_show_regs_command, "Print all registers");
}
projects / deliverable / binutils-gdb.git / blobdiff