#include "inferior.h" /* for BEFORE_TEXT_END etc. */
#include "gdb_string.h"
#include "arch-utils.h"
+#include "floatformat.h"
+
+#include "solib-svr4.h"
#undef XMALLOC
#define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
"ssr", "spc",
"r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0",
"r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1",
- "dr0", "dr1", "dr2", "dr3", "dr4", "dr5", "dr6", "dr7",
- "fv0", "fv1", "fv2", "fv3",
+ "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14",
+ "fv0", "fv4", "fv8", "fv12",
};
if (reg_nr < 0)
return NULL;
}
static unsigned char *
-sh_breakpoint_from_pc (pcptr, lenptr)
- CORE_ADDR *pcptr;
- int *lenptr;
+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};
/* Skip the prologue using the debug information. If this fails we'll
fall back on the 'guess' method below. */
static CORE_ADDR
-after_prologue (pc)
- CORE_ADDR pc;
+after_prologue (CORE_ADDR pc)
{
struct symtab_and_line sal;
CORE_ADDR func_addr, func_end;
where the prologue ends. Unfortunately this is not always
accurate. */
static CORE_ADDR
-skip_prologue_hard_way (start_pc)
- CORE_ADDR start_pc;
+skip_prologue_hard_way (CORE_ADDR start_pc)
{
CORE_ADDR here, end;
int updated_fp = 0;
}
static CORE_ADDR
-sh_skip_prologue (pc)
- CORE_ADDR pc;
+sh_skip_prologue (CORE_ADDR pc)
{
CORE_ADDR post_prologue_pc;
The return address is the value saved in the PR register + 4 */
static CORE_ADDR
-sh_saved_pc_after_call (frame)
- struct frame_info *frame;
+sh_saved_pc_after_call (struct frame_info *frame)
{
return (ADDR_BITS_REMOVE(read_register(PR_REGNUM)));
}
/* Should call_function allocate stack space for a struct return? */
static int
-sh_use_struct_convention (gcc_p, type)
- int gcc_p;
- struct type *type;
+sh_use_struct_convention (int gcc_p, struct type *type)
{
return (TYPE_LENGTH (type) > 1);
}
We store structs through a pointer passed in R0 */
static void
-sh_store_struct_return (addr, sp)
- CORE_ADDR addr;
- CORE_ADDR sp;
+sh_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
{
write_register (STRUCT_RETURN_REGNUM, (addr));
}
/* Disassemble an instruction. */
static int
-gdb_print_insn_sh (memaddr, info)
- bfd_vma memaddr;
- disassemble_info *info;
+gdb_print_insn_sh (bfd_vma memaddr, disassemble_info *info)
{
if (TARGET_BYTE_ORDER == BIG_ENDIAN)
return print_insn_sh (memaddr, info);
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 (frame)
- struct frame_info *frame;
+sh_frame_chain (struct frame_info *frame)
{
if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
return frame->frame; /* dummy frame same as caller's frame */
caller-saves registers for an inner frame. */
static CORE_ADDR
-sh_find_callers_reg (fi, regnum)
- struct frame_info *fi;
- int regnum;
+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))
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 (fi)
- struct frame_info *fi;
+sh_nofp_frame_init_saved_regs (struct frame_info *fi)
{
int where[NUM_REGS];
int rn;
}
static void
-sh_fp_frame_init_saved_regs (fi)
- struct frame_info *fi;
+sh_fp_frame_init_saved_regs (struct frame_info *fi)
{
int where[NUM_REGS];
int rn;
/* Initialize the extra info saved in a FRAME */
static void
-sh_init_extra_frame_info (fromleaf, fi)
- int fromleaf;
- struct frame_info *fi;
+sh_init_extra_frame_info (int fromleaf, struct frame_info *fi)
{
fi->extra_info = (struct frame_extra_info *)
}
static CORE_ADDR
-sh_frame_saved_pc (frame)
- struct frame_info *frame;
+sh_frame_saved_pc (struct frame_info *frame)
{
return ((frame)->extra_info->return_pc);
}
static CORE_ADDR
-sh_frame_args_address (fi)
- struct frame_info *fi;
+sh_frame_args_address (struct frame_info *fi)
{
return (fi)->frame;
}
static CORE_ADDR
-sh_frame_locals_address (fi)
- struct frame_info *fi;
+sh_frame_locals_address (struct frame_info *fi)
{
return (fi)->frame;
}
/* Discard from the stack the innermost frame,
restoring all saved registers. */
static void
-sh_pop_frame ()
+sh_pop_frame (void)
{
register struct frame_info *frame = get_current_frame ();
register CORE_ADDR fp;
to R7. */
static CORE_ADDR
-sh_push_arguments (nargs, args, sp, struct_return, struct_addr)
- int nargs;
- value_ptr *args;
- CORE_ADDR sp;
- unsigned char struct_return;
- CORE_ADDR struct_addr;
+sh_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
+ int struct_return, CORE_ADDR struct_addr)
{
int stack_offset, stack_alloc;
int argreg;
Needed for targets where we don't actually execute a JSR/BSR instruction */
static CORE_ADDR
-sh_push_return_address (pc, sp)
- CORE_ADDR pc;
- CORE_ADDR sp;
+sh_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
{
write_register (PR_REGNUM, CALL_DUMMY_ADDRESS ());
return sp;
#if 0
void
-sh_fix_call_dummy (dummy, pc, fun, nargs, args, type, gcc_p)
- char *dummy;
- CORE_ADDR pc;
- CORE_ADDR fun;
- int nargs;
- value_ptr *args;
- struct type *type;
- int gcc_p;
+sh_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs,
+ value_ptr *args, struct type *type, int gcc_p)
{
*(unsigned long *) (dummy + 8) = fun;
}
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 (type, regbuf, valbuf)
- struct type *type;
- char *regbuf;
- char *valbuf;
+sh_extract_return_value (struct type *type, char *regbuf, char *valbuf)
{
int len = TYPE_LENGTH (type);
/* Print the registers in a form similar to the E7000 */
static void
-sh_generic_show_regs ()
+sh_generic_show_regs (void)
{
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
}
static void
-sh3_show_regs ()
+sh3_show_regs (void)
{
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
static void
-sh3e_show_regs ()
+sh3e_show_regs (void)
{
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
}
static void
-sh3_dsp_show_regs ()
+sh3_dsp_show_regs (void)
{
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
}
static void
-sh4_show_regs ()
+sh4_show_regs (void)
{
int pr = read_register (gdbarch_tdep (current_gdbarch)->FPSCR_REGNUM) & 0x80000;
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
}
static void
-sh_dsp_show_regs ()
+sh_dsp_show_regs (void)
{
printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
paddr (read_register (PC_REGNUM)),
/* Index within `registers' of the first byte of the space for
register N. */
static int
-sh_default_register_byte (reg_nr)
- int reg_nr;
+sh_default_register_byte (int reg_nr)
{
return (reg_nr * 4);
}
static int
-sh_sh4_register_byte (reg_nr)
- int reg_nr;
+sh_sh4_register_byte (int reg_nr)
{
if (reg_nr >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM
- && reg_nr <= gdbarch_tdep (current_gdbarch)->DR7_REGNUM)
+ && reg_nr <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM)
return (dr_reg_base_num (reg_nr) * 4);
else if (reg_nr >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM
- && reg_nr <= gdbarch_tdep (current_gdbarch)->FV3_REGNUM)
+ && reg_nr <= gdbarch_tdep (current_gdbarch)->FV12_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 (reg_nr)
- int reg_nr;
+sh_default_register_raw_size (int reg_nr)
{
return 4;
}
static int
-sh_sh4_register_raw_size (reg_nr)
- int reg_nr;
+sh_sh4_register_raw_size (int reg_nr)
{
if (reg_nr >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM
- && reg_nr <= gdbarch_tdep (current_gdbarch)->DR7_REGNUM)
+ && reg_nr <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM)
return 8;
else if (reg_nr >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM
- && reg_nr <= gdbarch_tdep (current_gdbarch)->FV3_REGNUM)
+ && reg_nr <= gdbarch_tdep (current_gdbarch)->FV12_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 (reg_nr)
- int reg_nr;
+sh_register_virtual_size (int reg_nr)
{
return 4;
}
of data in register N. */
static struct type *
-sh_sh3e_register_virtual_type (reg_nr)
- int reg_nr;
+sh_sh3e_register_virtual_type (int reg_nr)
{
if ((reg_nr >= FP0_REGNUM
&& (reg_nr <= gdbarch_tdep (current_gdbarch)->FP15_REGNUM))
}
static struct type *
-sh_sh4_register_virtual_type (reg_nr)
- int reg_nr;
+sh_sh4_register_virtual_type (int reg_nr)
{
if ((reg_nr >= FP0_REGNUM
&& (reg_nr <= gdbarch_tdep (current_gdbarch)->FP15_REGNUM))
|| (reg_nr == gdbarch_tdep (current_gdbarch)->FPUL_REGNUM))
return builtin_type_float;
else if (reg_nr >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM
- && reg_nr <= gdbarch_tdep (current_gdbarch)->DR7_REGNUM)
+ && reg_nr <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM)
return builtin_type_double;
else if (reg_nr >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM
- && reg_nr <= gdbarch_tdep (current_gdbarch)->FV3_REGNUM)
+ && reg_nr <= gdbarch_tdep (current_gdbarch)->FV12_REGNUM)
return sh_sh4_build_float_register_type (3);
else
return builtin_type_int;
}
static struct type *
-sh_default_register_virtual_type (reg_nr)
- int reg_nr;
+sh_default_register_virtual_type (int reg_nr)
{
return builtin_type_int;
}
+/* On the sh4, the DRi pseudo registers are problematic if the target
+ is little endian. When the user writes one of those registers, for
+ instance with 'ser var $dr0=1', we want the double to be stored
+ like this:
+ fr0 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f
+ fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00
+
+ This corresponds to little endian byte order & big endian word
+ order. However if we let gdb write the register w/o conversion, it
+ will write fr0 and fr1 this way:
+ fr0 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00
+ fr1 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f
+ because it will consider fr0 and fr1 as a single LE stretch of memory.
+
+ To achieve what we want we must force gdb to store things in
+ floatformat_ieee_double_littlebyte_bigword (which is defined in
+ include/floatformat.h and libiberty/floatformat.c.
+
+ In case the target is big endian, there is no problem, the
+ raw bytes will look like:
+ fr0 = 0x3f 0xf0 0x00 0x00 0x00 0x00 0x00
+ fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00
+
+ The other pseudo registers (the FVs) also don't pose a problem
+ because they are stored as 4 individual FP elements. */
+
+int
+sh_sh4_register_convertible (int nr)
+{
+ if (TARGET_BYTE_ORDER == LITTLE_ENDIAN)
+ return (gdbarch_tdep (current_gdbarch)->DR0_REGNUM <= nr
+ && nr <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM);
+ else
+ return 0;
+}
+
+void
+sh_sh4_register_convert_to_virtual (int regnum, struct type *type,
+ char *from, char *to)
+{
+ if (regnum >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM
+ && regnum <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM)
+ {
+ DOUBLEST val;
+ floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, from, &val);
+ store_floating(to, TYPE_LENGTH(type), val);
+ }
+ else
+ error("sh_register_convert_to_virtual called with non DR register number");
+}
+
+void
+sh_sh4_register_convert_to_raw (struct type *type, int regnum,
+ char *from, char *to)
+{
+ if (regnum >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM
+ && regnum <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM)
+ {
+ DOUBLEST val = extract_floating (from, TYPE_LENGTH(type));
+ floatformat_from_doublest (&floatformat_ieee_double_littlebyte_bigword, &val, to);
+ }
+ else
+ error("sh_register_convert_to_raw called with non DR register number");
+}
+
void
sh_fetch_pseudo_register (int reg_nr)
{
if (!register_cached (reg_nr))
{
if (reg_nr >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM
- && reg_nr <= gdbarch_tdep (current_gdbarch)->DR7_REGNUM)
+ && reg_nr <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM)
{
base_regnum = dr_reg_base_num (reg_nr);
target_fetch_registers (base_regnum + portion);
}
else if (reg_nr >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM
- && reg_nr <= gdbarch_tdep (current_gdbarch)->FV3_REGNUM)
+ && reg_nr <= gdbarch_tdep (current_gdbarch)->FV12_REGNUM)
{
base_regnum = fv_reg_base_num (reg_nr);
int base_regnum, portion;
if (reg_nr >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM
- && reg_nr <= gdbarch_tdep (current_gdbarch)->DR7_REGNUM)
+ && reg_nr <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM)
{
base_regnum = dr_reg_base_num (reg_nr);
}
}
else if (reg_nr >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM
- && reg_nr <= gdbarch_tdep (current_gdbarch)->FV3_REGNUM)
+ && reg_nr <= gdbarch_tdep (current_gdbarch)->FV12_REGNUM)
{
base_regnum = fv_reg_base_num (reg_nr);
sh_do_pseudo_register (int regnum)
{
if (regnum < NUM_REGS || regnum >= NUM_REGS + NUM_PSEUDO_REGS)
- internal_error ("Invalid pasudo register number %d\n", regnum);
+ internal_error ("Invalid pseudo register number %d\n", regnum);
else if (regnum >= NUM_REGS &&
regnum < gdbarch_tdep (current_gdbarch)->FV0_REGNUM)
do_dr_register_info (regnum);
else if (regnum >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM &&
- regnum <= gdbarch_tdep (current_gdbarch)->FV3_REGNUM)
+ regnum <= gdbarch_tdep (current_gdbarch)->FV12_REGNUM)
do_fv_register_info (regnum);
}
}
}
+#ifdef SVR4_SHARED_LIBS
+
+/* Fetch (and possibly build) an appropriate link_map_offsets structure
+ for native i386 linux targets using the struct offsets defined in
+ link.h (but without actual reference to that file).
+
+ This makes it possible to access i386-linux shared libraries from
+ a gdb that was not built on an i386-linux host (for cross debugging).
+ */
+
+struct link_map_offsets *
+sh_linux_svr4_fetch_link_map_offsets (void)
+{
+ static struct link_map_offsets lmo;
+ static struct link_map_offsets *lmp = 0;
+
+ if (lmp == 0)
+ {
+ lmp = &lmo;
+
+ lmo.r_debug_size = 8; /* 20 not actual size but all we need */
+
+ lmo.r_map_offset = 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_name_offset = 4;
+ lmo.l_name_size = 4;
+
+ lmo.l_next_offset = 12;
+ lmo.l_next_size = 4;
+
+ lmo.l_prev_offset = 16;
+ lmo.l_prev_size = 4;
+ }
+
+ return lmp;
+}
+#endif /* SVR4_SHARED_LIBS */
+
static gdbarch_init_ftype sh_gdbarch_init;
static struct gdbarch *
-sh_gdbarch_init (info, arches)
- struct gdbarch_info info;
- struct gdbarch_list *arches;
+sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
static LONGEST sh_call_dummy_words[] = {0};
struct gdbarch *gdbarch;
tdep->SSR_REGNUM = -1;
tdep->SPC_REGNUM = -1;
tdep->DR0_REGNUM = -1;
- tdep->DR1_REGNUM = -1;
tdep->DR2_REGNUM = -1;
- tdep->DR3_REGNUM = -1;
tdep->DR4_REGNUM = -1;
- tdep->DR5_REGNUM = -1;
tdep->DR6_REGNUM = -1;
- tdep->DR7_REGNUM = -1;
+ tdep->DR8_REGNUM = -1;
+ tdep->DR10_REGNUM = -1;
+ tdep->DR12_REGNUM = -1;
+ tdep->DR14_REGNUM = -1;
tdep->FV0_REGNUM = -1;
- tdep->FV1_REGNUM = -1;
- tdep->FV2_REGNUM = -1;
- tdep->FV3_REGNUM = -1;
+ tdep->FV4_REGNUM = -1;
+ tdep->FV8_REGNUM = -1;
+ tdep->FV12_REGNUM = -1;
set_gdbarch_fp0_regnum (gdbarch, -1);
set_gdbarch_num_pseudo_regs (gdbarch, 0);
set_gdbarch_max_register_raw_size (gdbarch, 4);
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_convert_to_raw (gdbarch, sh_sh4_register_convert_to_raw);
+ set_gdbarch_register_convert_to_virtual (gdbarch, sh_sh4_register_convert_to_virtual);
+ set_gdbarch_register_convertible (gdbarch, sh_sh4_register_convertible);
tdep->FPUL_REGNUM = 23;
tdep->FPSCR_REGNUM = 24;
tdep->FP15_REGNUM = 40;
tdep->SSR_REGNUM = 41;
tdep->SPC_REGNUM = 42;
tdep->DR0_REGNUM = 59;
- tdep->DR1_REGNUM = 60;
- tdep->DR2_REGNUM = 61;
- tdep->DR3_REGNUM = 62;
- tdep->DR4_REGNUM = 63;
- tdep->DR5_REGNUM = 64;
- tdep->DR6_REGNUM = 65;
- tdep->DR7_REGNUM = 66;
+ tdep->DR2_REGNUM = 60;
+ tdep->DR4_REGNUM = 61;
+ tdep->DR6_REGNUM = 62;
+ tdep->DR8_REGNUM = 63;
+ tdep->DR10_REGNUM = 64;
+ tdep->DR12_REGNUM = 65;
+ tdep->DR14_REGNUM = 66;
tdep->FV0_REGNUM = 67;
- tdep->FV1_REGNUM = 68;
- tdep->FV2_REGNUM = 69;
- tdep->FV3_REGNUM = 70;
+ tdep->FV4_REGNUM = 68;
+ tdep->FV8_REGNUM = 69;
+ tdep->FV12_REGNUM = 70;
break;
default:
sh_register_name = sh_generic_register_name;
}
void
-_initialize_sh_tdep ()
+_initialize_sh_tdep (void)
{
struct cmd_list_element *c;
projects / deliverable / binutils-gdb.git / blobdiff