/* Parameters for execution on any Hewlett-Packard PA-RISC machine.
- Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993
- Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+ 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
Contributed by the Center for Software Science at the
University of Utah (pa-gdb-bugs@cs.utah.edu).
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
-/* Target system byte order. */
+#include "regcache.h"
-#define TARGET_BYTE_ORDER BIG_ENDIAN
+/* Wonder if this is correct? Should be using push_dummy_call(). */
+#define DEPRECATED_DUMMY_WRITE_SP(SP) generic_target_write_sp (SP)
-/* Get at various relevent fields of an instruction word. */
-
-#define MASK_5 0x1f
-#define MASK_11 0x7ff
-#define MASK_14 0x3fff
-#define MASK_21 0x1fffff
-
-/* This macro gets bit fields using HP's numbering (MSB = 0) */
-
-#define GET_FIELD(X, FROM, TO) \
- ((X) >> 31 - (TO) & (1 << ((TO) - (FROM) + 1)) - 1)
-
-/* Watch out for NaNs */
-
-#define IEEE_FLOAT
-
-/* When passing a structure to a function, GCC passes the address
- in a register, not the structure itself. */
-
-/* FIXME: I believe this is wrong. I believe passing the address
- depends only on the size of the argument being > 8, not on its type
- (which is a much more sane way than the REG_STRUCT_HAS_ADDR way,
- IMHO). Also, as far as I know it is not dependent on it being
- passed in a register. This should be verified before changing
- anything (in fact, printing structure arguments of
- 2,4,6,8,12,16,and 20 bytes should all be in the test suite). */
-
-#define REG_STRUCT_HAS_ADDR(gcc_p) (1)
-
-/* Offset from address of function to start of its code.
- Zero on most machines. */
-
-#define FUNCTION_START_OFFSET 0
-
-/* Advance PC across any function entry prologue instructions
- to reach some "real" code. */
-
-/* skip (stw rp, -20(0,sp)); copy 4,1; copy sp, 4; stwm 1,framesize(sp)
- for gcc, or (stw rp, -20(0,sp); stwm 1, framesize(sp) for hcc */
-
-#define SKIP_PROLOGUE(pc) pc = skip_prologue (pc)
-
-/* If PC is in some function-call trampoline code, return the PC
- where the function itself actually starts. If not, return NULL. */
-
-#define SKIP_TRAMPOLINE_CODE(pc) skip_trampoline_code (pc, NULL)
-
-/* Return non-zero if we are in some sort of a trampoline. */
-
-#define IN_SOLIB_TRAMPOLINE(pc, name) skip_trampoline_code (pc, name)
-
-/* Immediately after a function call, return the saved pc.
- Can't go through the frames for this because on some machines
- the new frame is not set up until the new function executes
- some instructions. */
-
-#undef SAVED_PC_AFTER_CALL
-#define SAVED_PC_AFTER_CALL(frame) saved_pc_after_call (frame)
-
-/* Stack grows upward */
-
-#define INNER_THAN >
-
-
-/* Sequence of bytes for breakpoint instruction. */
-
-/*#define BREAKPOINT {0x00, 0x00, 0x00, 0x00}*/
-#ifdef KERNELDEBUG /* XXX */
-#define BREAKPOINT {0x00, 0x00, 0xa0, 0x00}
-#else
-#define BREAKPOINT {0x00, 0x01, 0x00, 0x04}
+#ifndef GDB_MULTI_ARCH
+#define GDB_MULTI_ARCH 1
#endif
-/* Amount PC must be decremented by after a breakpoint.
- This is often the number of bytes in BREAKPOINT
- but not always.
-
- Not on the PA-RISC */
-
-#define DECR_PC_AFTER_BREAK 0
-
-/* return instruction is bv r0(rp) or bv,n r0(rp)*/
-
-#define ABOUT_TO_RETURN(pc) ((read_memory_integer (pc, 4) | 0x2) == 0xE840C002)
+/* NOTE: cagney/2002-11-24: This is a guess. */
+#define DEPRECATED_USE_GENERIC_DUMMY_FRAMES 0
+#define CALL_DUMMY_LOCATION ON_STACK
+#define DEPRECATED_PC_IN_CALL_DUMMY(pc, sp, frame_address) deprecated_pc_in_call_dummy_on_stack (pc, sp, frame_address)
+#define DEPRECATED_INIT_FRAME_PC(l,f) (init_frame_pc_default (l, f))
-/* Return 1 if P points to an invalid floating point value. */
+/* Forward declarations of some types we use in prototypes */
-#define INVALID_FLOAT(p, len) 0 /* Just a first guess; not checked */
+struct frame_info;
+struct frame_saved_regs;
+struct value;
+struct type;
+struct inferior_status;
-/* Largest integer type */
-#define LONGEST long
-
-/* Name of the builtin type for the LONGEST type above. */
-#define BUILTIN_TYPE_LONGEST builtin_type_long
-
-/* Say how long (ordinary) registers are. This is a piece of bogosity
- used in push_word and a few other places; REGISTER_RAW_SIZE is the
- real way to know how big a register is. */
-
-#define REGISTER_SIZE 4
+/* Sequence of bytes for breakpoint instruction. */
-/* Number of machine registers */
+const unsigned char *hppa_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr);
+#define BREAKPOINT_FROM_PC(PCPTR,LENPTR) hppa_breakpoint_from_pc ((PCPTR), (LENPTR))
+#define BREAKPOINT32 0x10004
-#define NUM_REGS 100
+extern int hppa_pc_requires_run_before_use (CORE_ADDR pc);
+#define PC_REQUIRES_RUN_BEFORE_USE(pc) hppa_pc_requires_run_before_use (pc)
/* Initializer for an array of names of registers.
- There should be NUM_REGS strings in this initializer. */
+ There should be NUM_REGS strings in this initializer.
+ They are in rows of eight entries */
#define REGISTER_NAMES \
- {"flags", "r1", "rp", "r3", "r4", "r5", "r6", "r7", "r8", "r9", \
- "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19", \
- "r20", "r21", "r22", "arg3", "arg2", "arg1", "arg0", "dp", "ret0", "ret1", \
- "sp", "r31", "sar", "pcoqh", "pcsqh", "pcoqt", "pcsqt", \
- "eiem", "iir", "isr", "ior", "ipsw", "goto", "sr4", "sr0", "sr1", "sr2", \
- "sr3", "sr5", "sr6", "sr7", "cr0", "cr8", "cr9", "ccr", "cr12", "cr13", \
- "cr24", "cr25", "cr26", "mpsfu_high", "mpsfu_low", "mpsfu_ovflo", "pad", \
- "fpsr", "fpe1", "fpe2", "fpe3", "fpe4", "fpe5", "fpe6", "fpe7", \
- "fr4", "fr5", "fr6", "fr7", "fr8", \
- "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", \
- "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23", \
- "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31"}
+ {"flags", "r1", "rp", "r3", "r4", "r5", "r6", "r7", \
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
+ "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
+ "r24", "r25", "r26", "dp", "ret0", "ret1", "sp", "r31", \
+ "sar", "pcoqh", "pcsqh", "pcoqt", "pcsqt", "eiem", "iir", "isr", \
+ "ior", "ipsw", "goto", "sr4", "sr0", "sr1", "sr2", "sr3", \
+ "sr5", "sr6", "sr7", "cr0", "cr8", "cr9", "ccr", "cr12", \
+ "cr13", "cr24", "cr25", "cr26", "mpsfu_high","mpsfu_low","mpsfu_ovflo","pad",\
+ "fpsr", "fpe1", "fpe2", "fpe3", "fpe4", "fpe5", "fpe6", "fpe7", \
+ "fr4", "fr4R", "fr5", "fr5R", "fr6", "fr6R", "fr7", "fr7R", \
+ "fr8", "fr8R", "fr9", "fr9R", "fr10", "fr10R", "fr11", "fr11R", \
+ "fr12", "fr12R", "fr13", "fr13R", "fr14", "fr14R", "fr15", "fr15R", \
+ "fr16", "fr16R", "fr17", "fr17R", "fr18", "fr18R", "fr19", "fr19R", \
+ "fr20", "fr20R", "fr21", "fr21R", "fr22", "fr22R", "fr23", "fr23R", \
+ "fr24", "fr24R", "fr25", "fr25R", "fr26", "fr26R", "fr27", "fr27R", \
+ "fr28", "fr28R", "fr29", "fr29R", "fr30", "fr30R", "fr31", "fr31R"}
/* Register numbers of various important registers.
Note that some of these values are "real" register numbers,
to be actual register numbers as far as the user is concerned
but do serve to get the desired values when passed to read_register. */
+#define R0_REGNUM 0 /* Doesn't actually exist, used as base for
+ other r registers. */
#define FLAGS_REGNUM 0 /* Various status flags */
#define RP_REGNUM 2 /* return pointer */
-#define FP_REGNUM 4 /* Contains address of executing stack */
- /* frame */
-#define SP_REGNUM 30 /* Contains address of top of stack */
-#define SAR_REGNUM 32 /* shift amount register */
-#define IPSW_REGNUM 41 /* processor status word. ? */
+#define SAR_REGNUM 32 /* Shift Amount Register */
+#define IPSW_REGNUM 41 /* Interrupt Processor Status Word */
#define PCOQ_HEAD_REGNUM 33 /* instruction offset queue head */
#define PCSQ_HEAD_REGNUM 34 /* instruction space queue head */
#define PCOQ_TAIL_REGNUM 35 /* instruction offset queue tail */
#define PCSQ_TAIL_REGNUM 36 /* instruction space queue tail */
-#define FP0_REGNUM 64 /* floating point reg. 0 */
+#define EIEM_REGNUM 37 /* External Interrupt Enable Mask */
+#define IIR_REGNUM 38 /* Interrupt Instruction Register */
+#define IOR_REGNUM 40 /* Interrupt Offset Register */
+#define SR4_REGNUM 43 /* space register 4 */
+#define RCR_REGNUM 51 /* Recover Counter (also known as cr0) */
+#define CCR_REGNUM 54 /* Coprocessor Configuration Register */
+#define TR0_REGNUM 57 /* Temporary Registers (cr24 -> cr31) */
+#define CR27_REGNUM 60 /* Base register for thread-local storage, cr27 */
#define FP4_REGNUM 72
-/* compatibility with the rest of gdb. */
-#define PC_REGNUM PCOQ_HEAD_REGNUM
-#define NPC_REGNUM PCOQ_TAIL_REGNUM
+#define ARG0_REGNUM 26 /* The first argument of a callee. */
+#define ARG1_REGNUM 25 /* The second argument of a callee. */
+#define ARG2_REGNUM 24 /* The third argument of a callee. */
+#define ARG3_REGNUM 23 /* The fourth argument of a callee. */
/* When fetching register values from an inferior or a core file,
clean them up using this macro. BUF is a char pointer to
the raw value of the register in the registers[] array. */
-#define CLEAN_UP_REGISTER_VALUE(regno, buf) \
+#define DEPRECATED_CLEAN_UP_REGISTER_VALUE(regno, buf) \
do { \
if ((regno) == PCOQ_HEAD_REGNUM || (regno) == PCOQ_TAIL_REGNUM) \
- (buf)[3] &= ~0x3; \
+ (buf)[sizeof(CORE_ADDR) -1] &= ~0x3; \
} while (0)
-/* Define DO_REGISTERS_INFO() to do machine-specific formatting
- of register dumps. */
+/* Define DEPRECATED_DO_REGISTERS_INFO() to do machine-specific
+ formatting of register dumps. */
-#define DO_REGISTERS_INFO(_regnum, fp) pa_do_registers_info (_regnum, fp)
+#define DEPRECATED_DO_REGISTERS_INFO(_regnum, fp) pa_do_registers_info (_regnum, fp)
+extern void pa_do_registers_info (int, int);
/* PA specific macro to see if the current instruction is nullified. */
-#define INSTRUCTION_NULLIFIED ((int)read_register (IPSW_REGNUM) & 0x00200000)
-
-/* Total amount of space needed to store our copies of the machine's
- register state, the array `registers'. */
-#define REGISTER_BYTES (32 * 4 + 11 * 4 + 8 * 4 + 12 * 4 + 4 + 32 * 8)
-
-/* Index within `registers' of the first byte of the space for
- register N. */
-
-#define REGISTER_BYTE(N) \
- ((N) >= FP4_REGNUM ? ((N) - FP4_REGNUM) * 8 + 288 : (N) * 4)
-
-/* Number of bytes of storage in the actual machine representation
- for register N. On the PA-RISC, all regs are 4 bytes
- except the floating point regs which are 8 bytes. */
-
-#define REGISTER_RAW_SIZE(N) ((N) < FP4_REGNUM ? 4 : 8)
-
-/* Number of bytes of storage in the program's representation
- for register N. */
-
-#define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N)
-
-/* Largest value REGISTER_RAW_SIZE can have. */
-
-#define MAX_REGISTER_RAW_SIZE 8
-
-/* Largest value REGISTER_VIRTUAL_SIZE can have. */
-
-#define MAX_REGISTER_VIRTUAL_SIZE 8
-
-/* Return the GDB type object for the "standard" data type
- of data in register N. */
-
-#define REGISTER_VIRTUAL_TYPE(N) \
- ((N) < FP4_REGNUM ? builtin_type_int : builtin_type_double)
-
-/* Store the address of the place in which to copy the structure the
- subroutine will return. This is called from call_function. */
-
-#define STORE_STRUCT_RETURN(ADDR, SP) {write_register (28, (ADDR)); }
-
-/* Extract from an array REGBUF containing the (raw) register state
- a function return value of type TYPE, and copy that, in virtual format,
- into VALBUF. */
-
-#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
- memcpy (VALBUF, (REGBUF) + REGISTER_BYTE(TYPE_LENGTH(TYPE) > 4 ? \
- FP4_REGNUM :28), TYPE_LENGTH (TYPE))
-
-/* Write into appropriate registers a function return value
- of type TYPE, given in virtual format. */
-
-#define STORE_RETURN_VALUE(TYPE,VALBUF) \
- write_register_bytes ((TYPE_LENGTH(TYPE) > 4 \
- ? REGISTER_BYTE (FP4_REGNUM) \
- : REGISTER_BYTE (28)), \
- (VALBUF), TYPE_LENGTH (TYPE))
-
-/* 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). */
-
-#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(int *)((REGBUF) + 28))
-
-/*
- * This macro defines the register numbers (from REGISTER_NAMES) that
- * are effectively unavailable to the user through ptrace(). It allows
- * us to include the whole register set in REGISTER_NAMES (inorder to
- * better support remote debugging). If it is used in
- * fetch/store_inferior_registers() gdb will not complain about I/O errors
- * on fetching these registers. If all registers in REGISTER_NAMES
- * are available, then return false (0).
- */
+#ifndef INSTRUCTION_NULLIFIED
+extern int hppa_instruction_nullified (void);
+#define INSTRUCTION_NULLIFIED hppa_instruction_nullified ()
+#endif
-#define CANNOT_STORE_REGISTER(regno) \
- ((regno) == 0) || \
- ((regno) == PCSQ_HEAD_REGNUM) || \
- ((regno) >= PCSQ_TAIL_REGNUM && (regno) < IPSW_REGNUM) || \
- ((regno) > IPSW_REGNUM && (regno) < FP4_REGNUM)
-
-#define INIT_EXTRA_FRAME_INFO(fromleaf, frame) init_extra_frame_info (fromleaf, frame)
-
-/* Describe the pointer in each stack frame to the previous stack frame
- (its caller). */
-
-/* FRAME_CHAIN takes a frame's nominal address
- and produces the frame's chain-pointer.
-
- FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address
- and produces the nominal address of the caller frame.
-
- However, if FRAME_CHAIN_VALID returns zero,
- it means the given frame is the outermost one and has no caller.
- In that case, FRAME_CHAIN_COMBINE is not used. */
-
-/* In the case of the PA-RISC, the frame's nominal address
- is the address of a 4-byte word containing the calling frame's
- address (previous FP). */
-
-#define FRAME_CHAIN(thisframe) frame_chain (thisframe)
-
-#define FRAME_CHAIN_VALID(chain, thisframe) \
- frame_chain_valid (chain, thisframe)
-
-#define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
-
-/* Define other aspects of the stack frame. */
-
-/* A macro that tells us whether the function invocation represented
- by FI does not have a frame on the stack associated with it. If it
- does not, FRAMELESS is set to 1, else 0. */
-#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
- (FRAMELESS) = frameless_function_invocation(FI)
-
-#define FRAME_SAVED_PC(FRAME) frame_saved_pc (FRAME)
-
-#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
-
-#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
-/* Set VAL to the number of args passed to frame described by FI.
- Can set VAL to -1, meaning no way to tell. */
-
-/* We can't tell how many args there are
- now that the C compiler delays popping them. */
-#define FRAME_NUM_ARGS(val,fi) (val = -1)
-
-/* Return number of bytes at start of arglist that are not really args. */
-
-#define FRAME_ARGS_SKIP 0
-
-/* 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. */
-
-/* Deal with dummy functions later. */
-
-#define STW_P(INSN) (((INSN) & 0xfc000000) == 0x68000000)
-#define ADDIL_P(INSN) (((INSN) & 0xfc000000) == 0x28000000)
-#define LDO_P(INSN) (((INSN) & 0xfc00c000) == 0x34000000)
-
-#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
-{ register int regnum; \
- register CORE_ADDR next_addr; \
- register CORE_ADDR pc; \
- unsigned this_insn; \
- unsigned address; \
- \
- memset (&frame_saved_regs, '\0', sizeof frame_saved_regs); \
- if ((frame_info->pc >= (frame_info)->frame \
- && (frame_info)->pc <= ((frame_info)->frame + CALL_DUMMY_LENGTH \
- + 32 * 4 + (NUM_REGS - FP0_REGNUM) * 8 \
- + 6 * 4))) \
- find_dummy_frame_regs ((frame_info), &(frame_saved_regs)); \
- else \
- { pc = get_pc_function_start ((frame_info)->pc); \
- if (read_memory_integer (pc, 4) == 0x6BC23FD9) \
- { (frame_saved_regs).regs[RP_REGNUM] = (frame_info)->frame - 20;\
- pc = pc + 4; \
- } \
- if (read_memory_integer (pc, 4) != 0x8040241) goto lose; \
- pc += 8; /* skip "copy 4,1; copy 30, 4" */ \
- /* skip either "stw 1,0(4);addil L'fsize,30;ldo R'fsize(1),30" \
- or "stwm 1,fsize(30)" */ \
- if ((read_memory_integer (pc, 4) & ~MASK_14) == 0x68810000) \
- pc += 12; \
- else \
- pc += 4; \
- while (1) \
- { this_insn = read_memory_integer(pc, 4); \
- if (STW_P (this_insn)) /* stw */ \
- { regnum = GET_FIELD (this_insn, 11, 15); \
- if (!regnum) goto lose; \
- (frame_saved_regs).regs[regnum] = (frame_info)->frame + \
- extract_14 (this_insn); \
- pc += 4; \
- } \
- else if (ADDIL_P (this_insn)) /* addil */ \
- { int next_insn; \
- next_insn = read_memory_integer(pc + 4, 4); \
- if (STW_P (next_insn)) /* stw */ \
- { regnum = GET_FIELD (this_insn, 6, 10); \
- if (!regnum) goto lose; \
- (frame_saved_regs).regs[regnum] = (frame_info)->frame +\
- (extract_21 (this_insn) << 11) + extract_14 (next_insn);\
- pc += 8; \
- } \
- else \
- break; \
- } \
- else \
- { pc += 4; \
- break; \
- } \
- } \
- this_insn = read_memory_integer (pc, 4); \
- if (LDO_P (this_insn)) \
- { next_addr = (frame_info)->frame + extract_14 (this_insn); \
- pc += 4; \
- } \
- else if (ADDIL_P (this_insn)) \
- { next_addr = (frame_info)->frame + (extract_21 (this_insn) << 11)\
- + extract_14 (read_memory_integer (pc + 4, 4)); \
- pc += 8; \
- } \
- while (1) \
- { this_insn = read_memory_integer (pc, 4); \
- if ((this_insn & 0xfc001fe0) == 0x2c001220) /* fstds,ma */ \
- { regnum = GET_FIELD (this_insn, 27, 31); \
- (frame_saved_regs).regs[regnum + FP0_REGNUM] = next_addr; \
- next_addr += 8; \
- pc += 4; \
- } \
- else \
- break; \
- } \
- lose: \
- (frame_saved_regs).regs[FP_REGNUM] = (frame_info)->frame; \
- (frame_saved_regs).regs[SP_REGNUM] = (frame_info)->frame -4; \
- }}
-\f
-/* Things needed for making the inferior call functions. */
-
-/* Push an empty stack frame, to record the current PC, etc. */
-
-#define PUSH_DUMMY_FRAME push_dummy_frame ()
-
-/* Discard from the stack the innermost frame,
- restoring all saved registers. */
-#define POP_FRAME hppa_pop_frame ()
+/* elz: Return a large value, which is stored on the stack at addr.
+ This is defined only for the hppa, at this moment. The above macro
+ DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS is not called anymore,
+ because it assumes that on exit from a called function which
+ returns a large structure on the stack, the address of the ret
+ structure is still in register 28. Unfortunately this register is
+ usually overwritten by the called function itself, on hppa. This is
+ specified in the calling convention doc. As far as I know, the only
+ way to get the return value is to have the caller tell us where it
+ told the callee to put it, rather than have the callee tell us. */
+struct value *hppa_value_returned_from_stack (register struct type *valtype,
+ CORE_ADDR addr);
+#define VALUE_RETURNED_FROM_STACK(valtype,addr) \
+ hppa_value_returned_from_stack (valtype, addr)
+
+extern void hppa_frame_init_saved_regs (struct frame_info *);
+#define DEPRECATED_FRAME_INIT_SAVED_REGS(FI) \
+ hppa_frame_init_saved_regs (FI)
+
+#define INSTRUCTION_SIZE 4
/* This sequence of words is the instructions
-; Call stack frame has already been built by gdb. Since we could be calling
-; a varargs function, and we do not have the benefit of a stub to put things in
-; the right place, we load the first 4 word of arguments into both the general
-; and fp registers.
-call_dummy
- ldw -36(sp), arg0
- ldw -40(sp), arg1
- ldw -44(sp), arg2
- ldw -48(sp), arg3
- ldo -36(sp), r1
- fldws 0(0, r1), fr4
- fldds -4(0, r1), fr5
- fldws -8(0, r1), fr6
- fldds -12(0, r1), fr7
- ldil 0, r22 ; target will be placed here.
- ldo 0(r22), r22
- ldsid (0,r22), r3
- ldil 0, r1 ; _sr4export will be placed here.
- ldo 0(r1), r1
- ldsid (0,r1), r19
- combt,=,n r3, r19, text_space ; If target is in data space, do a
- ble 0(sr5, r22) ; "normal" procedure call
- copy r31, r2
- break 4, 8
- mtsp r21, sr0
- ble,n 0(sr0, r22)
-text_space ; Otherwise, go through _sr4export,
- ble (sr4, r1) ; which will return back here.
- stw 31,-24(r30)
- break 4, 8
- mtsp r21, sr0
- ble,n 0(sr0, r22)
+ ; Call stack frame has already been built by gdb. Since we could be calling
+ ; a varargs function, and we do not have the benefit of a stub to put things in
+ ; the right place, we load the first 4 word of arguments into both the general
+ ; and fp registers.
+ call_dummy
+ ldw -36(sp), arg0
+ ldw -40(sp), arg1
+ ldw -44(sp), arg2
+ ldw -48(sp), arg3
+ ldo -36(sp), r1
+ fldws 0(0, r1), fr4
+ fldds -4(0, r1), fr5
+ fldws -8(0, r1), fr6
+ fldds -12(0, r1), fr7
+ ldil 0, r22 ; FUNC_LDIL_OFFSET must point here
+ ldo 0(r22), r22 ; FUNC_LDO_OFFSET must point here
+ ldsid (0,r22), r4
+ ldil 0, r1 ; SR4EXPORT_LDIL_OFFSET must point here
+ ldo 0(r1), r1 ; SR4EXPORT_LDO_OFFSET must point here
+ ldsid (0,r1), r20
+ combt,=,n r4, r20, text_space ; If target is in data space, do a
+ ble 0(sr5, r22) ; "normal" procedure call
+ copy r31, r2
+ break 4, 8
+ mtsp r21, sr0
+ ble,n 0(sr0, r22)
+ text_space ; Otherwise, go through _sr4export,
+ ble (sr4, r1) ; which will return back here.
+ stw r31,-24(r30)
+ break 4, 8
+ mtsp r21, sr0
+ ble,n 0(sr0, r22)
+ nop ; To avoid kernel bugs
+ nop ; and keep the dummy 8 byte aligned
The dummy decides if the target is in text space or data space. If
it's in data space, there's no problem because the target can
calls a function in text space and can return to any space. Instead
of including fake instructions to represent saved registers, we
know that the frame is associated with the call dummy and treat it
- specially. */
+ specially.
+
+ The trailing NOPs are needed to avoid a bug in HPUX, BSD and OSF1
+ kernels. If the memory at the location pointed to by the PC is
+ 0xffffffff then a ptrace step call will fail (even if the instruction
+ is nullified).
+
+ The code to pop a dummy frame single steps three instructions
+ starting with the last mtsp. This includes the nullified "instruction"
+ following the ble (which is uninitialized junk). If the
+ "instruction" following the last BLE is 0xffffffff, then the ptrace
+ will fail and the dummy frame is not correctly popped.
+
+ By placing a NOP in the delay slot of the BLE instruction we can be
+ sure that we never try to execute a 0xffffffff instruction and
+ avoid the kernel bug. The second NOP is needed to keep the call
+ dummy 8 byte aligned. */
#define CALL_DUMMY {0x4BDA3FB9, 0x4BD93FB1, 0x4BD83FA9, 0x4BD73FA1,\
0x37C13FB9, 0x24201004, 0x2C391005, 0x24311006,\
- 0x2C291007, 0x22C00000, 0x36D60000, 0x02C010A3,\
- 0x20200000, 0x34210000, 0x002010b3, 0x82632022,\
+ 0x2C291007, 0x22C00000, 0x36D60000, 0x02C010A4,\
+ 0x20200000, 0x34210000, 0x002010b4, 0x82842022,\
0xe6c06000, 0x081f0242, 0x00010004, 0x00151820,\
0xe6c00002, 0xe4202000, 0x6bdf3fd1, 0x00010004,\
- 0x00151820, 0xe6c00002}
+ 0x00151820, 0xe6c00002, 0x08000240, 0x08000240}
+
+#define REG_PARM_STACK_SPACE 16
+
+/* If we've reached a trap instruction within the call dummy, then
+ we'll consider that to mean that we've reached the call dummy's
+ end after its successful completion. */
+#define CALL_DUMMY_HAS_COMPLETED(pc, sp, frame_address) \
+ (DEPRECATED_PC_IN_CALL_DUMMY((pc), (sp), (frame_address)) && \
+ (read_memory_integer((pc), 4) == BREAKPOINT32))
+
+/* Insert the specified number of args and function address into a
+ call sequence of the above form stored at DUMMYNAME.
+
+ On the hppa we need to call the stack dummy through $$dyncall.
+ Therefore our version of DEPRECATED_FIX_CALL_DUMMY takes an extra
+ argument, real_pc, which is the location where gdb should start up
+ the inferior to do the function call. */
+
+/* FIXME: brobecker 2002-12-26. This macro is going to cause us some
+ problems before we can go to multiarch partial as it has been
+ diverted on HPUX to return the value of the PC! */
+/* NOTE: cagney/2003-05-03: This has been replaced by push_dummy_code.
+ Hopefully that has all the parameters HP/UX needs. */
+#define DEPRECATED_FIX_CALL_DUMMY hppa_fix_call_dummy
+extern CORE_ADDR hppa_fix_call_dummy (char *, CORE_ADDR, CORE_ADDR, int,
+ struct value **, struct type *, int);
-#define CALL_DUMMY_LENGTH 104
-#define CALL_DUMMY_START_OFFSET 0
+#define GDB_TARGET_IS_HPPA
/*
- * Insert the specified number of args and function address
- * into a call sequence of the above form stored at DUMMYNAME.
- *
- * On the hppa we need to call the stack dummy through $$dyncall.
- * Therefore our version of FIX_CALL_DUMMY takes an extra argument,
- * real_pc, which is the location where gdb should start up the
- * inferior to do the function call.
+ * Unwind table and descriptor.
*/
-#define FIX_CALL_DUMMY hppa_fix_call_dummy
-
-CORE_ADDR hppa_fix_call_dummy();
-
-#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
- sp = hppa_push_arguments(nargs, args, sp, struct_return, struct_addr)
-
-/* Symbol files have two symbol tables. Rather than do this right,
- like the ELF symbol reading code, massive hackery was added
- to dbxread.c and partial-stab.h. This flag turns on that
- hackery, which should all go away FIXME FIXME FIXME FIXME now. */
-
-#define GDB_TARGET_IS_HPPA
+struct unwind_table_entry
+ {
+ CORE_ADDR region_start;
+ CORE_ADDR region_end;
+
+ unsigned int Cannot_unwind:1; /* 0 */
+ unsigned int Millicode:1; /* 1 */
+ unsigned int Millicode_save_sr0:1; /* 2 */
+ unsigned int Region_description:2; /* 3..4 */
+ unsigned int reserved1:1; /* 5 */
+ unsigned int Entry_SR:1; /* 6 */
+ unsigned int Entry_FR:4; /* number saved *//* 7..10 */
+ unsigned int Entry_GR:5; /* number saved *//* 11..15 */
+ unsigned int Args_stored:1; /* 16 */
+ unsigned int Variable_Frame:1; /* 17 */
+ unsigned int Separate_Package_Body:1; /* 18 */
+ unsigned int Frame_Extension_Millicode:1; /* 19 */
+ unsigned int Stack_Overflow_Check:1; /* 20 */
+ unsigned int Two_Instruction_SP_Increment:1; /* 21 */
+ unsigned int Ada_Region:1; /* 22 */
+ unsigned int cxx_info:1; /* 23 */
+ unsigned int cxx_try_catch:1; /* 24 */
+ unsigned int sched_entry_seq:1; /* 25 */
+ unsigned int reserved2:1; /* 26 */
+ unsigned int Save_SP:1; /* 27 */
+ unsigned int Save_RP:1; /* 28 */
+ unsigned int Save_MRP_in_frame:1; /* 29 */
+ unsigned int extn_ptr_defined:1; /* 30 */
+ unsigned int Cleanup_defined:1; /* 31 */
+
+ unsigned int MPE_XL_interrupt_marker:1; /* 0 */
+ unsigned int HP_UX_interrupt_marker:1; /* 1 */
+ unsigned int Large_frame:1; /* 2 */
+ unsigned int Pseudo_SP_Set:1; /* 3 */
+ unsigned int reserved4:1; /* 4 */
+ unsigned int Total_frame_size:27; /* 5..31 */
+
+ /* This is *NOT* part of an actual unwind_descriptor in an object
+ file. It is *ONLY* part of the "internalized" descriptors that
+ we create from those in a file.
+ */
+ struct
+ {
+ unsigned int stub_type:4; /* 0..3 */
+ unsigned int padding:28; /* 4..31 */
+ }
+ stub_unwind;
+ };
+
+/* HP linkers also generate unwinds for various linker-generated stubs.
+ GDB reads in the stubs from the $UNWIND_END$ subspace, then
+ "converts" them into normal unwind entries using some of the reserved
+ fields to store the stub type. */
+
+/* The gaps represent linker stubs used in MPE and space for future
+ expansion. */
+enum unwind_stub_types
+ {
+ LONG_BRANCH = 1,
+ PARAMETER_RELOCATION = 2,
+ EXPORT = 10,
+ IMPORT = 11,
+ IMPORT_SHLIB = 12,
+ };
+
+/* We use the objfile->obj_private pointer for two things:
+
+ * 1. An unwind table;
+ *
+ * 2. A pointer to any associated shared library object.
+ *
+ * #defines are used to help refer to these objects.
+ */
-#define BELIEVE_PCC_PROMOTION 1
+/* Info about the unwind table associated with an object file.
-/*
- * Unwind table and descriptor.
+ * This is hung off of the "objfile->obj_private" pointer, and
+ * is allocated in the objfile's psymbol obstack. This allows
+ * us to have unique unwind info for each executable and shared
+ * library that we are debugging.
*/
-
-struct unwind_table_entry {
- unsigned int region_start;
- unsigned int region_end;
-
- unsigned int Cannot_unwind : 1;
- unsigned int Millicode : 1;
- unsigned int Millicode_save_sr0 : 1;
- unsigned int Region_description : 2;
- unsigned int reserverd1 : 1;
- unsigned int Entry_SR : 1;
- unsigned int Entry_FR : 4; /* number saved */
- unsigned int Entry_GR : 5; /* number saved */
- unsigned int Args_stored : 1;
- unsigned int Variable_Frame : 1;
- unsigned int Separate_Package_Body : 1;
- unsigned int Frame_Extension_Millicode:1;
- unsigned int Stack_Overflow_Check : 1;
- unsigned int Two_Instruction_SP_Increment:1;
- unsigned int Ada_Region : 1;
- unsigned int reserved2 : 4;
- unsigned int Save_SP : 1;
- unsigned int Save_RP : 1;
- unsigned int Save_MRP_in_frame : 1;
- unsigned int extn_ptr_defined : 1;
- unsigned int Cleanup_defined : 1;
-
- unsigned int MPE_XL_interrupt_marker: 1;
- unsigned int HP_UX_interrupt_marker: 1;
- unsigned int Large_frame : 1;
- unsigned int reserved4 : 2;
- unsigned int Total_frame_size : 27;
-};
-
-/* Info about the unwind table associated with an object file. This is hung
- off of the objfile->obj_private pointer, and is allocated in the objfile's
- psymbol obstack. This allows us to have unique unwind info for each
- executable and shared library that we are debugging. */
-
-struct obj_unwind_info {
- struct unwind_table_entry *table; /* Pointer to unwind info */
- struct unwind_table_entry *cache; /* Pointer to last entry we found */
- int last; /* Index of last entry */
-};
-
-#define OBJ_UNWIND_INFO(obj) ((struct obj_unwind_info *)obj->obj_private)
-
-extern CORE_ADDR target_read_pc PARAMS ((void));
-extern void target_write_pc PARAMS ((CORE_ADDR));
-
-#define TARGET_READ_PC() target_read_pc ()
-#define TARGET_WRITE_PC(v) target_write_pc (v)
+struct obj_unwind_info
+ {
+ struct unwind_table_entry *table; /* Pointer to unwind info */
+ struct unwind_table_entry *cache; /* Pointer to last entry we found */
+ int last; /* Index of last entry */
+ };
+
+typedef struct obj_private_struct
+ {
+ struct obj_unwind_info *unwind_info; /* a pointer */
+ struct so_list *so_info; /* a pointer */
+ CORE_ADDR dp;
+ }
+obj_private_data_t;
+
+/* For a number of horrible reasons we may have to adjust the location
+ of variables on the stack. Ugh. */
+#define HPREAD_ADJUST_STACK_ADDRESS(ADDR) hpread_adjust_stack_address(ADDR)
+extern int hpread_adjust_stack_address (CORE_ADDR);
+
+/* Here's how to step off a permanent breakpoint. */
+#define SKIP_PERMANENT_BREAKPOINT (hppa_skip_permanent_breakpoint)
+extern void hppa_skip_permanent_breakpoint (void);
+
+/* On HP-UX, certain system routines (millicode) have names beginning
+ with $ or $$, e.g. $$dyncall, which handles inter-space procedure
+ calls on PA-RISC. Tell the expression parser to check for those
+ when parsing tokens that begin with "$". */
+#define SYMBOLS_CAN_START_WITH_DOLLAR (1)
projects / deliverable / binutils-gdb.git / blobdiff