df7e526582
This commit renames nine files that contain code used by both 32- and 64-bit Intel ports such that their names are prefixed with "x86" rather than "i386". All types, functions and variables within these files are likewise renamed such that their names are prefixed with "x86" rather than "i386". This makes GDB follow the convention used by gdbserver such that 32-bit Intel code lives in files called "i386-*", 64-bit Intel code lives in files called "amd64-*", and code for both 32- and 64-bit Intel lives in files called "x86-*". This commit only renames OS-independent files. The Linux ports of both GDB and gdbserver now follow the i386/amd64/x86 convention fully. Some ports still use the old convention where "i386" in file/function/ type/variable names can mean "32-bit only" or "32- and 64-bit" but I don't want to touch ports I can't fully test except where absolutely necessary. gdb/ChangeLog: * i386-nat.h: Renamed as... * x86-nat.h: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. * i386-nat.c: Renamed as... * x86-nat.c: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. * common/i386-xstate.h: Renamed as... * common/x86-xstate.h: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. * nat/i386-cpuid.h: Renamed as... * nat/x86-cpuid.h: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. * nat/i386-gcc-cpuid.h: Renamed as... * nat/x86-gcc-cpuid.h: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. * nat/i386-dregs.h: Renamed as... * nat/x86-dregs.h: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. * nat/i386-dregs.c: Renamed as... * nat/x86-dregs.c: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. gdb/gdbserver/ChangeLog: * i386-low.h: Renamed as... * x86-low.h: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. * i386-low.c: Renamed as... * x86-low.c: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated.
268 lines
8.1 KiB
C
268 lines
8.1 KiB
C
/* Native-dependent code for FreeBSD/amd64.
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Copyright (C) 2003-2014 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
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "inferior.h"
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#include "regcache.h"
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#include "target.h"
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#include <signal.h>
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#include <sys/types.h>
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#include <sys/ptrace.h>
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#include <sys/sysctl.h>
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#include <machine/reg.h>
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#include "fbsd-nat.h"
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#include "amd64-tdep.h"
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#include "amd64-nat.h"
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#include "amd64bsd-nat.h"
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#include "x86-nat.h"
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/* Offset in `struct reg' where MEMBER is stored. */
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#define REG_OFFSET(member) offsetof (struct reg, member)
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/* At amd64fbsd64_r_reg_offset[REGNUM] you'll find the offset in
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`struct reg' location where the GDB register REGNUM is stored.
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Unsupported registers are marked with `-1'. */
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static int amd64fbsd64_r_reg_offset[] =
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{
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REG_OFFSET (r_rax),
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REG_OFFSET (r_rbx),
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REG_OFFSET (r_rcx),
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REG_OFFSET (r_rdx),
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REG_OFFSET (r_rsi),
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REG_OFFSET (r_rdi),
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REG_OFFSET (r_rbp),
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REG_OFFSET (r_rsp),
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REG_OFFSET (r_r8),
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REG_OFFSET (r_r9),
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REG_OFFSET (r_r10),
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REG_OFFSET (r_r11),
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REG_OFFSET (r_r12),
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REG_OFFSET (r_r13),
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REG_OFFSET (r_r14),
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REG_OFFSET (r_r15),
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REG_OFFSET (r_rip),
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REG_OFFSET (r_rflags),
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REG_OFFSET (r_cs),
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REG_OFFSET (r_ss),
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-1,
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-1,
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-1,
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-1
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};
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/* Mapping between the general-purpose registers in FreeBSD/amd64
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`struct reg' format and GDB's register cache layout for
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FreeBSD/i386.
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Note that most FreeBSD/amd64 registers are 64-bit, while the
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FreeBSD/i386 registers are all 32-bit, but since we're
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little-endian we get away with that. */
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/* From <machine/reg.h>. */
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static int amd64fbsd32_r_reg_offset[I386_NUM_GREGS] =
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{
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14 * 8, 13 * 8, /* %eax, %ecx */
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12 * 8, 11 * 8, /* %edx, %ebx */
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20 * 8, 10 * 8, /* %esp, %ebp */
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9 * 8, 8 * 8, /* %esi, %edi */
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17 * 8, 19 * 8, /* %eip, %eflags */
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18 * 8, 21 * 8, /* %cs, %ss */
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-1, -1, -1, -1 /* %ds, %es, %fs, %gs */
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};
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/* Support for debugging kernel virtual memory images. */
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#include <machine/pcb.h>
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#include <osreldate.h>
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#include "bsd-kvm.h"
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static int
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amd64fbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
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{
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/* The following is true for FreeBSD 5.2:
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The pcb contains %rip, %rbx, %rsp, %rbp, %r12, %r13, %r14, %r15,
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%ds, %es, %fs and %gs. This accounts for all callee-saved
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registers specified by the psABI and then some. Here %esp
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contains the stack pointer at the point just after the call to
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cpu_switch(). From this information we reconstruct the register
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state as it would like when we just returned from cpu_switch(). */
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/* The stack pointer shouldn't be zero. */
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if (pcb->pcb_rsp == 0)
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return 0;
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pcb->pcb_rsp += 8;
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regcache_raw_supply (regcache, AMD64_RIP_REGNUM, &pcb->pcb_rip);
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regcache_raw_supply (regcache, AMD64_RBX_REGNUM, &pcb->pcb_rbx);
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regcache_raw_supply (regcache, AMD64_RSP_REGNUM, &pcb->pcb_rsp);
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regcache_raw_supply (regcache, AMD64_RBP_REGNUM, &pcb->pcb_rbp);
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regcache_raw_supply (regcache, 12, &pcb->pcb_r12);
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regcache_raw_supply (regcache, 13, &pcb->pcb_r13);
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regcache_raw_supply (regcache, 14, &pcb->pcb_r14);
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regcache_raw_supply (regcache, 15, &pcb->pcb_r15);
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#if (__FreeBSD_version < 800075) && (__FreeBSD_kernel_version < 800075)
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/* struct pcb provides the pcb_ds/pcb_es/pcb_fs/pcb_gs fields only
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up until __FreeBSD_version 800074: The removal of these fields
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occurred on 2009-04-01 while the __FreeBSD_version number was
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bumped to 800075 on 2009-04-06. So 800075 is the closest version
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number where we should not try to access these fields. */
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regcache_raw_supply (regcache, AMD64_DS_REGNUM, &pcb->pcb_ds);
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regcache_raw_supply (regcache, AMD64_ES_REGNUM, &pcb->pcb_es);
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regcache_raw_supply (regcache, AMD64_FS_REGNUM, &pcb->pcb_fs);
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regcache_raw_supply (regcache, AMD64_GS_REGNUM, &pcb->pcb_gs);
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#endif
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return 1;
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}
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static void (*super_mourn_inferior) (struct target_ops *ops);
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static void
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amd64fbsd_mourn_inferior (struct target_ops *ops)
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{
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#ifdef HAVE_PT_GETDBREGS
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x86_cleanup_dregs ();
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#endif
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super_mourn_inferior (ops);
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}
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/* Provide a prototype to silence -Wmissing-prototypes. */
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void _initialize_amd64fbsd_nat (void);
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void
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_initialize_amd64fbsd_nat (void)
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{
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struct target_ops *t;
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int offset;
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amd64_native_gregset32_reg_offset = amd64fbsd32_r_reg_offset;
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amd64_native_gregset64_reg_offset = amd64fbsd64_r_reg_offset;
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/* Add some extra features to the common *BSD/i386 target. */
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t = amd64bsd_target ();
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#ifdef HAVE_PT_GETDBREGS
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x86_use_watchpoints (t);
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x86_dr_low.set_control = amd64bsd_dr_set_control;
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x86_dr_low.set_addr = amd64bsd_dr_set_addr;
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x86_dr_low.get_addr = amd64bsd_dr_get_addr;
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x86_dr_low.get_status = amd64bsd_dr_get_status;
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x86_dr_low.get_control = amd64bsd_dr_get_control;
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x86_set_debug_register_length (8);
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#endif /* HAVE_PT_GETDBREGS */
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super_mourn_inferior = t->to_mourn_inferior;
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t->to_mourn_inferior = amd64fbsd_mourn_inferior;
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t->to_pid_to_exec_file = fbsd_pid_to_exec_file;
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t->to_find_memory_regions = fbsd_find_memory_regions;
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t->to_make_corefile_notes = fbsd_make_corefile_notes;
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add_target (t);
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/* Support debugging kernel virtual memory images. */
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bsd_kvm_add_target (amd64fbsd_supply_pcb);
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/* To support the recognition of signal handlers, i386bsd-tdep.c
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hardcodes some constants. Inclusion of this file means that we
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are compiling a native debugger, which means that we can use the
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system header files and sysctl(3) to get at the relevant
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information. */
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#define SC_REG_OFFSET amd64fbsd_sc_reg_offset
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/* We only check the program counter, stack pointer and frame
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pointer since these members of `struct sigcontext' are essential
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for providing backtraces. */
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#define SC_RIP_OFFSET SC_REG_OFFSET[AMD64_RIP_REGNUM]
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#define SC_RSP_OFFSET SC_REG_OFFSET[AMD64_RSP_REGNUM]
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#define SC_RBP_OFFSET SC_REG_OFFSET[AMD64_RBP_REGNUM]
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/* Override the default value for the offset of the program counter
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in the sigcontext structure. */
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offset = offsetof (struct sigcontext, sc_rip);
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if (SC_RIP_OFFSET != offset)
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{
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warning (_("\
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offsetof (struct sigcontext, sc_rip) yields %d instead of %d.\n\
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Please report this to <bug-gdb@gnu.org>."),
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offset, SC_RIP_OFFSET);
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}
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SC_RIP_OFFSET = offset;
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/* Likewise for the stack pointer. */
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offset = offsetof (struct sigcontext, sc_rsp);
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if (SC_RSP_OFFSET != offset)
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{
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warning (_("\
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offsetof (struct sigcontext, sc_rsp) yields %d instead of %d.\n\
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Please report this to <bug-gdb@gnu.org>."),
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offset, SC_RSP_OFFSET);
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}
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SC_RSP_OFFSET = offset;
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/* And the frame pointer. */
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offset = offsetof (struct sigcontext, sc_rbp);
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if (SC_RBP_OFFSET != offset)
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{
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warning (_("\
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offsetof (struct sigcontext, sc_rbp) yields %d instead of %d.\n\
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Please report this to <bug-gdb@gnu.org>."),
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offset, SC_RBP_OFFSET);
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}
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SC_RBP_OFFSET = offset;
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/* FreeBSD provides a kern.ps_strings sysctl that we can use to
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locate the sigtramp. That way we can still recognize a sigtramp
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if its location is changed in a new kernel. Of course this is
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still based on the assumption that the sigtramp is placed
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directly under the location where the program arguments and
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environment can be found. */
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{
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int mib[2];
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long ps_strings;
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size_t len;
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mib[0] = CTL_KERN;
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mib[1] = KERN_PS_STRINGS;
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len = sizeof (ps_strings);
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if (sysctl (mib, 2, &ps_strings, &len, NULL, 0) == 0)
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{
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amd64fbsd_sigtramp_start_addr = ps_strings - 32;
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amd64fbsd_sigtramp_end_addr = ps_strings;
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}
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}
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}
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