binutils-gdb/gdb/mipsv4-nat.c

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/* Native support for MIPS running SVR4, for GDB.
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Copyright 1994, 1995, 2000, 2001 Free Software Foundation, Inc.
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This file is part of GDB.
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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.
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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.
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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. */
#include "defs.h"
#include "inferior.h"
#include "gdbcore.h"
#include "target.h"
#include "regcache.h"
#include <sys/time.h>
#include <sys/procfs.h>
#include <setjmp.h> /* For JB_XXX. */
/* Prototypes for supply_gregset etc. */
#include "gregset.h"
/* Size of elements in jmpbuf */
#define JB_ELEMENT_SIZE 4
/*
* See the comment in m68k-tdep.c regarding the utility of these functions.
*
* These definitions are from the MIPS SVR4 ABI, so they may work for
* any MIPS SVR4 target.
*/
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void
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supply_gregset (gregset_t *gregsetp)
{
register int regi;
register greg_t *regp = &(*gregsetp)[0];
char zerobuf[MAX_REGISTER_SIZE];
memset (zerobuf, 0, MAX_REGISTER_SIZE);
for (regi = 0; regi <= CXT_RA; regi++)
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supply_register (regi, (char *) (regp + regi));
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supply_register (PC_REGNUM, (char *) (regp + CXT_EPC));
supply_register (HI_REGNUM, (char *) (regp + CXT_MDHI));
supply_register (LO_REGNUM, (char *) (regp + CXT_MDLO));
supply_register (CAUSE_REGNUM, (char *) (regp + CXT_CAUSE));
/* Fill inaccessible registers with zero. */
supply_register (PS_REGNUM, zerobuf);
supply_register (BADVADDR_REGNUM, zerobuf);
2003-04-28 Andrew Cagney <cagney@redhat.com> * gdbarch.sh (DEPRECATED_TARGET_READ_FP): Replace TARGET_READ_FP. (DEPRECATED_FP_REGNUM): Replace FP_REGNUM. * gdbarch.h, gdbarch.c: Re-generate. * infcall.c (call_function_by_hand): Use DEPRECATED_FP_REGNUM, DEPRECATED_TARGET_READ_FP, or "sp" to create the dummy frame ID. * inferior.h (deprecated_read_fp): Rename read_fp. (generic_target_read_fp): Delete declaration. * regcache.c (generic_target_read_fp): Delete function. (deprecated_read_fp): Replace read_fp, use DEPRECATED_TARGET_READ_FP or DEPRECATED_FP_REGNUM. * d10v-tdep.c (d10v_read_fp): Delete function. (d10v_gdbarch_init): Do not set deprecated_read_fp. * sparc-tdep.c (sparc_gdbarch_init): Do not set deprecated_target_read_fp to generic_target_read_fp. * sh-tdep.c (sh_gdbarch_init): Ditto. * rs6000-tdep.c (rs6000_gdbarch_init): Ditto. * m68hc11-tdep.c (m68hc11_gdbarch_init): Ditto. * frv-tdep.c (frv_gdbarch_init): Ditto. * xstormy16-tdep.c (xstormy16_gdbarch_init): Set deprecated_fp_regnum. * x86-64-tdep.c (x86_64_init_abi): Ditto. * vax-tdep.c (vax_gdbarch_init): Ditto. * v850-tdep.c (v850_gdbarch_init): Ditto. * sparc-tdep.c (sparc_gdbarch_init): Ditto. * sh-tdep.c (sh_gdbarch_init): Ditto. * s390-tdep.c (s390_gdbarch_init): Ditto. * rs6000-tdep.c (rs6000_gdbarch_init): Ditto. * mn10300-tdep.c (mn10300_gdbarch_init): Ditto. * mcore-tdep.c (mcore_gdbarch_init): Ditto. * m68k-tdep.c (m68k_gdbarch_init): Ditto. * m68hc11-tdep.c (m68hc11_gdbarch_init): Ditto. * ia64-tdep.c (ia64_gdbarch_init): Ditto. * i386-tdep.c (i386_gdbarch_init): Ditto. * hppa-tdep.c (hppa_gdbarch_init): Ditto. * h8300-tdep.c (h8300_gdbarch_init): Ditto. * frv-tdep.c (frv_gdbarch_init): Ditto. * cris-tdep.c (cris_gdbarch_init): Ditto. * avr-tdep.c (avr_gdbarch_init): Ditto. * arm-tdep.c (arm_gdbarch_init): Ditto. * alpha-tdep.c (alpha_gdbarch_init): Ditto. * x86-64-tdep.c (x86_64_init_abi): Set deprecated_target_read_fp. * v850-tdep.c (v850_gdbarch_init): Ditto. * sparc-tdep.c (sparc_gdbarch_init): Ditto. * sh-tdep.c (sh_gdbarch_init): Ditto. * s390-tdep.c (s390_gdbarch_init): Ditto. * rs6000-tdep.c (rs6000_gdbarch_init): Ditto. * mn10300-tdep.c (mn10300_gdbarch_init): Ditto. * mips-tdep.c (mips_gdbarch_init): Ditto. * m68hc11-tdep.c (m68hc11_gdbarch_init): Ditto. * ia64-tdep.c (ia64_gdbarch_init): Ditto. * hppa-tdep.c (hppa_gdbarch_init): Ditto. * frv-tdep.c (frv_gdbarch_init): Ditto. * avr-tdep.c (avr_gdbarch_init): Ditto. * arm-tdep.c (arm_gdbarch_init): Ditto. * vax-tdep.c (vax_frame_init_saved_regs): Replace FP_REGNUM with DEPRECATED_FP_REGNUM. (vax_push_dummy_frame, vax_pop_frame): Ditto. * std-regs.c (value_of_builtin_frame_fp_reg): Ditto. * sparc-tdep.c (sparc_init_extra_frame_info): Ditto. (sparc_push_dummy_frame, sparc64_read_fp): Ditto. (sparc32_register_virtual_type): Ditto. * sh-tdep.c (sh64_frame_chain): Ditto. (sh64_get_saved_register, sh64_pop_frame): Ditto. (sh_nofp_frame_init_saved_regs): Ditto. (sh64_nofp_frame_init_saved_regs): Ditto. (sh_fp_frame_init_saved_regs): Ditto. * remote-mips.c (mips_wait, mips_fetch_registers): Ditto. * remote-e7000.c (fetch_regs_from_dump): Ditto. * procfs.c (procfs_fetch_registers): Ditto. (procfs_store_registers): Ditto. * ns32knbsd-nat.c (fetch_inferior_registers): Ditto. (store_inferior_registers, fetch_core_registers): Ditto. (fetch_kcore_registers, clear_regs): Ditto. * ns32k-tdep.c (ns32k_frame_init_saved_regs): Ditto. (ns32k_push_dummy_frame, ns32k_pop_frame): Ditto. * nlm/i386.h (DEPRECATED_FP_REGNUM): Ditto. * nlm/i386.c (do_status): Ditto. * mipsv4-nat.c (supply_gregset): Ditto. * mips-tdep.c: Ditto for comments. * mips-nat.c (fetch_inferior_registers): Ditto. (store_inferior_registers, fetch_core_registers): Ditto. * m68k-tdep.c (m68k_push_dummy_frame): Ditto. (m68k_pop_frame, m68k_frame_init_saved_regs): Ditto. * i386-tdep.c (i386_frame_init_saved_regs): Ditto. (i386_do_pop_frame, i386_register_type): Ditto. * hppa-tdep.c (hppa_frame_chain): Ditto. (hppa_push_dummy_frame, find_dummy_frame_regs): Ditto. (hppa_pop_frame, hppa_read_fp): Ditto. (skip_prologue_hard_way, hppa_frame_find_saved_regs): Ditto. * cris-tdep.c (cris_examine, cris_pop_frame): Ditto. * config/vax/nm-vax.h (REGISTER_U_ADDR): Ditto. * config/sparc/tm-sparc.h (DEPRECATED_FP_REGNUM): Ditto. * config/sparc/tm-sp64.h (DEPRECATED_FP_REGNUM): Ditto. * config/s390/tm-s390.h (DEPRECATED_FP_REGNUM): Ditto. * config/pa/tm-hppa64.h (DEPRECATED_FP_REGNUM): Ditto. * config/ia64/tm-ia64.h (DEPRECATED_FP_REGNUM): Ditto. * blockframe.c: Ditto for comments. * arch-utils.h: Ditto for comments. * arch-utils.c (legacy_virtual_frame_pointer): Ditto. * alphanbsd-tdep.c (fetch_core_registers): Ditto. * alphabsd-nat.c (fetch_inferior_registers): Ditto. * alpha-tdep.h: Ditto for comments. * alpha-tdep.c (alpha_cannot_fetch_register): Ditto. (alpha_cannot_store_register): Ditto. (alpha_push_dummy_frame): Ditto. * alpha-nat.c (supply_gregset): Ditto. * config/sparc/tm-sp64.h (DEPRECATED_TARGET_READ_FP): Update. * config/pa/tm-hppa64.h (DEPRECATED_TARGET_READ_FP): Update. * config/sparc/tm-sparc.h: Update comment. * hppa-tdep.c (hppa_init_extra_frame_info): Use deprecated_read_fp instead of TARGET_READ_FP. (hppa_init_extra_frame_info, hppa_frame_chain): Ditto. (hppa_push_dummy_frame, hppa_read_fp): Ditto. * sparc-tdep.c (sparc_init_extra_frame_info): Use deprecated_read_fp instead of read_fp. * s390-tdep.c (s390_push_arguments): Ditto. * ia64-tdep.c (ia64_gdbarch_init): Ditto. * frame.h: Ditto in comments. * frame.c (legacy_get_prev_frame): Ditto. * dummy-frame.c (dummy_frame_this_id): Ditto. * arm-tdep.c (arm_init_extra_frame_info): Ditto. 2003-04-28 Andrew Cagney <cagney@redhat.com> * gdbint.texinfo (Target Architecture Definition): Replace read_fp, TARGET_READ_FP and FP_REGNUM, with deprecated_read_fp, DEPRECATED_TARGET_READ_FP and DEPRECATED_REGNUM.
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supply_register (DEPRECATED_FP_REGNUM, zerobuf);
supply_register (UNUSED_REGNUM, zerobuf);
for (regi = FIRST_EMBED_REGNUM; regi <= LAST_EMBED_REGNUM; regi++)
supply_register (regi, zerobuf);
}
void
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fill_gregset (gregset_t *gregsetp, int regno)
{
int regi;
register greg_t *regp = &(*gregsetp)[0];
for (regi = 0; regi <= 32; regi++)
if ((regno == -1) || (regno == regi))
*(regp + regi) = *(greg_t *) & deprecated_registers[REGISTER_BYTE (regi)];
if ((regno == -1) || (regno == PC_REGNUM))
*(regp + CXT_EPC) = *(greg_t *) & deprecated_registers[REGISTER_BYTE (PC_REGNUM)];
if ((regno == -1) || (regno == CAUSE_REGNUM))
*(regp + CXT_CAUSE) = *(greg_t *) & deprecated_registers[REGISTER_BYTE (CAUSE_REGNUM)];
if ((regno == -1) || (regno == HI_REGNUM))
*(regp + CXT_MDHI) = *(greg_t *) & deprecated_registers[REGISTER_BYTE (HI_REGNUM)];
if ((regno == -1) || (regno == LO_REGNUM))
*(regp + CXT_MDLO) = *(greg_t *) & deprecated_registers[REGISTER_BYTE (LO_REGNUM)];
}
/*
* Now we do the same thing for floating-point registers.
* We don't bother to condition on FP0_REGNUM since any
* reasonable MIPS configuration has an R3010 in it.
*
* Again, see the comments in m68k-tdep.c.
*/
void
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supply_fpregset (fpregset_t *fpregsetp)
{
register int regi;
char zerobuf[MAX_REGISTER_SIZE];
memset (zerobuf, 0, MAX_REGISTER_SIZE);
for (regi = 0; regi < 32; regi++)
supply_register (FP0_REGNUM + regi,
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(char *) &fpregsetp->fp_r.fp_regs[regi]);
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supply_register (FCRCS_REGNUM, (char *) &fpregsetp->fp_csr);
/* FIXME: how can we supply FCRIR_REGNUM? The ABI doesn't tell us. */
supply_register (FCRIR_REGNUM, zerobuf);
}
void
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fill_fpregset (fpregset_t *fpregsetp, int regno)
{
int regi;
char *from, *to;
for (regi = FP0_REGNUM; regi < FP0_REGNUM + 32; regi++)
{
if ((regno == -1) || (regno == regi))
{
from = (char *) &deprecated_registers[REGISTER_BYTE (regi)];
to = (char *) &(fpregsetp->fp_r.fp_regs[regi - FP0_REGNUM]);
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memcpy (to, from, REGISTER_RAW_SIZE (regi));
}
}
if ((regno == -1) || (regno == FCRCS_REGNUM))
fpregsetp->fp_csr = *(unsigned *) &deprecated_registers[REGISTER_BYTE (FCRCS_REGNUM)];
}
/* Figure out where the longjmp will land.
We expect the first arg to be a pointer to the jmp_buf structure from which
we extract the pc (_JB_PC) that we will land at. The pc is copied into PC.
This routine returns true on success. */
int
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get_longjmp_target (CORE_ADDR *pc)
{
char *buf;
CORE_ADDR jb_addr;
buf = alloca (TARGET_PTR_BIT / TARGET_CHAR_BIT);
jb_addr = read_register (A0_REGNUM);
if (target_read_memory (jb_addr + _JB_PC * JB_ELEMENT_SIZE, buf,
TARGET_PTR_BIT / TARGET_CHAR_BIT))
return 0;
2003-06-01 Andrew Cagney <cagney@redhat.com> * defs.h (extract_address): Delete declaration. * findvar.c (extract_address): Delete function. * xstormy16-tdep.c (xstormy16_extract_return_value): Replace extract_address with the inline equivalent, extract_unsigned_integer. (xstormy16_extract_struct_value_address): Ditto. (xstormy16_pointer_to_address): Ditto. * vax-tdep.c (vax_extract_struct_value_address): Ditto. * v850-tdep.c (v850_push_arguments): Ditto. (v850_extract_return_value): Ditto. (v850_extract_struct_value_address): Ditto. * sparcnbsd-tdep.c (sparcnbsd_get_longjmp_target_32): Ditto. (sparcnbsd_get_longjmp_target_64): Ditto. * sparc-tdep.c (sparc_frame_saved_pc): Ditto. (get_longjmp_target): Ditto. * sh-tdep.c (sh_extract_struct_value_address): Ditto. (sh64_extract_struct_value_address): Ditto. (sh_push_arguments): Ditto. (sh64_push_arguments): Ditto. * remote-vxsparc.c (vx_read_register): Ditto. * ppc-linux-tdep.c (ppc_linux_skip_trampoline_code): Ditto. * ns32k-tdep.c (ns32k_extract_struct_value_address): Ditto. * mn10300-tdep.c (mn10300_extract_struct_value_address): Ditto. * mipsv4-nat.c (get_longjmp_target): Ditto. * mipsnbsd-tdep.c (mipsnbsd_get_longjmp_target): Ditto. * mips-nat.c (get_longjmp_target): Ditto. * mips-linux-tdep.c (mips_linux_get_longjmp_target): Ditto. * mcore-tdep.c (mcore_extract_struct_value_address): Ditto. * m68k-tdep.c (m68k_get_longjmp_target): Ditto. * m68hc11-tdep.c (m68hc11_extract_struct_value_address): Ditto. * irix5-nat.c (get_longjmp_target): Ditto. * irix4-nat.c (get_longjmp_target): Ditto. * ia64-tdep.c (generic_elf_find_global_pointer): Ditto. (ia64_push_arguments): Ditto. * hpux-thread.c (hpux_thread_store_registers): Ditto. * h8300-tdep.c (h8300_push_arguments): Ditto. (h8300_store_return_value): Ditto. (h8300_extract_struct_value_address): Ditto. * frv-tdep.c (frv_extract_struct_value_address): Ditto. (frv_push_arguments): Ditto. * avr-tdep.c (avr_pointer_to_address): Ditto. (avr_push_arguments): Ditto. * arm-tdep.c (arm_push_dummy_call): Ditto. (arm_get_longjmp_target): Ditto. * arm-linux-tdep.c (arm_linux_push_arguments): Ditto. * alpha-tdep.c (alpha_extract_struct_value_address): Ditto. (alpha_get_longjmp_target): Ditto.
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*pc = extract_unsigned_integer (buf, TARGET_PTR_BIT / TARGET_CHAR_BIT);
return 1;
}