2003-07-14 00:15:59 +08:00
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/* Native-dependent code for FreeBSD/amd64.
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2003-08-29 21:58:26 +08:00
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2009-01-03 13:58:08 +08:00
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Copyright (C) 2003, 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
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2003-07-14 00:15:59 +08:00
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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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2007-08-24 02:08:50 +08:00
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the Free Software Foundation; either version 3 of the License, or
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2003-07-14 00:15:59 +08:00
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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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2007-08-24 02:08:50 +08:00
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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2003-07-14 00:15:59 +08:00
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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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2004-09-27 02:42:30 +08:00
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#include "target.h"
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2003-07-14 00:15:59 +08:00
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#include "gdb_assert.h"
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#include <signal.h>
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#include <stddef.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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2004-09-27 02:42:30 +08:00
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#include "fbsd-nat.h"
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2004-02-26 04:59:12 +08:00
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#include "amd64-tdep.h"
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2003-08-29 21:58:26 +08:00
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#include "amd64-nat.h"
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2003-07-14 00:15:59 +08:00
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2004-06-26 19:47:53 +08:00
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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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2003-07-14 00:15:59 +08:00
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2004-06-26 19:47:53 +08:00
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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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2003-07-14 00:15:59 +08:00
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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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2004-01-10 20:52:41 +08:00
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REG_OFFSET (r_cs),
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REG_OFFSET (r_ss),
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2003-07-14 00:15:59 +08:00
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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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2003-08-29 21:58:26 +08:00
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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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2003-07-14 00:15:59 +08:00
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2003-08-29 21:58:26 +08:00
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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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2003-07-14 00:15:59 +08:00
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2003-08-29 21:58:26 +08:00
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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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2003-07-14 00:15:59 +08:00
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2004-06-27 23:44:22 +08:00
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/* Support for debugging kernel virtual memory images. */
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#include <sys/types.h>
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#include <machine/pcb.h>
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2009-10-17 07:18:27 +08:00
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#include <osreldate.h>
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2004-06-27 23:44:22 +08:00
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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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2009-10-17 07:18:27 +08:00
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#if (__FreeBSD_version < 800075)
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2004-06-27 23:44:22 +08:00
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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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2009-10-17 07:18:27 +08:00
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#endif
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2004-06-27 23:44:22 +08:00
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return 1;
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}
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2003-07-14 00:15:59 +08:00
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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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2003-09-16 03:30:50 +08:00
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_initialize_amd64fbsd_nat (void)
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2003-07-14 00:15:59 +08:00
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{
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2004-09-27 02:42:30 +08:00
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struct target_ops *t;
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2003-07-14 00:15:59 +08:00
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int offset;
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2003-08-29 21:58:26 +08:00
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amd64_native_gregset32_reg_offset = amd64fbsd32_r_reg_offset;
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2004-06-26 19:47:53 +08:00
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amd64_native_gregset64_reg_offset = amd64fbsd64_r_reg_offset;
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2003-08-29 21:58:26 +08:00
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2004-09-27 02:42:30 +08:00
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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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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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2003-07-14 00:15:59 +08:00
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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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* x86-64-tdep.h: Tewak comment.
(enum amd64_regnum): New.
(X86_64_RAX_REGNUM, X86_64_RDX_REGNUM, X86_64_RDI_REGNUM)
(X86_64_RBP_REGNUM, X86_64_RSP_REGNUM, X86_64_RIP_REGNUM)
(X86_64_EFLAGS_REGNUM, X86_64_ST0_REGNUM, X86_64_XMM0_REGNUM)
(X86_64_XMM1_REGNUM): Removed.
(AMD64_NUM_GREGS): Renamed from X86_64_NUM_GREGS.
(amd64_init_abi, amd64_supply_fxsave, amd64_fill_fxsave): Adjust
prototypes for renamed functions.
* x86-64-tdep.c: Fix typo.
(amd64_dwarf_regmap): Use constants from `enum amd64_regnum' for
register numbers.
(amd64_return_value, amd64_push_arguments, amd64_push_dummy_call):
Use constants from `enum amd64_regnum' for register numbers.
(AMD64_NUM_SAVED_REGS): Adjust for renamed macros.
(amd64_analyze_prologue, amd64_frame_cache,
amd64_sigtramp_frame_cache): Use constants from `enum
amd64_regnum' for register numbers.
(amd64_supply_fpregset): Adjust for renamed functions.
(amd64_init_abi): Rename from x86_64_init_abi. Use constants from
`enum amd64_regnum' for register numbers.
(I387_ST0_REGNUM): Use constant from `enum amd64_regnum'.
(amd64_supply_fxsave): Rename from x86_64_supply_fxsave.
(amd64_fill_fxsave): Rename fro x86_64_fill_fxsave.
* x86-64-linux-tdep.c (amd64_linux_supply_gregset)
(amd64_linux_fill_gregset): Adjust for renamed macros.
(fetch_core_registers): Adjust for renamed functions.
(amd64_linux_init_abi): Adjust for renamed functions.
* x86-64-linux-nat.c (supply_gregset, fill_gregset): Adjust for
renamed functions.
* amd64-nat.c: Adjust for renamed macros.
* amd64bsd-nat.c (fetch_inferior_registers)
(store_inferior_registers): Use constants from `enum amd64_regnum'
for register numbers. Adjust for renamed variables.
* amd64fbsd-nat.c (supply_gregset, fill_gregset): Adjust for
renamed variables.
(_initialize_amd64fbsd_nat): Use constants from `enum
amd64_regnum' for register numbers.
* amd64fbsd-tdep.c (amd64fbsd_sigcontext_addr): Use constants from
`enum amd64_regnum' for register numbers.
(amd64fbsd_init_abi): Adjust for renamed functions.
* amd64nbsd-tdep.c (amd64nbsd_sigcontext_addr): Use constants from
`enum amd64_regnum' for register numbers.
(amd64nbsd_init_abi): Adjust for renamed functions.
(_initialize_amd64nbsd_ndep): Adjust for renamed macros.
* amd64obsd-tdep.c (amd64obsd_sigcontext_addr): Use constants from
`enum amd64_regnum' for register numbers.
(amd64obsd_init_abi): Adjust for renamed functions.
(_initialize_amd64obsd_ndep): Adjust for renamed macros.
2004-02-24 05:37:52 +08:00
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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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2003-07-14 00:15:59 +08:00
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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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{
|
2005-01-05 Baurjan Ismagulov <ibr@ata.cs.hun.edu.tr>
Committed by Andrew Cagney.
* ada-valprint.c, aix-thread.c, alpha-nat.c: I18n markup.
* alphabsd-nat.c, alphanbsd-tdep.c, amd64-linux-nat.c: I18n markup.
* amd64-tdep.c, amd64bsd-nat.c, amd64fbsd-nat.c: I18n markup.
* arch-utils.c, arm-linux-nat.c, arm-tdep.c: I18n markup.
* armnbsd-nat.c, armnbsd-tdep.c, auxv.c, avr-tdep.c: I18n markup.
* aix-thread.c (_initialize_aix_thread): Get rid of the
deprecated_add_show_from_set call.
* alpha-tdep.c (_initialize_alpha_tdep): Ditto.
* arm-tdep.c (_initialize_arm_tdep): Ditto.
* command.h (add_setshow_enum_cmd): Add arguments for returning
new list elements.
* cli/cli-decode.c (add_setshow_enum_cmd): Ditto.
* mips-tdep.c (_initialize_mips_tdep): Modify calls to
add_setshow_enum_cmd.
2005-01-05 23:43:50 +08:00
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warning (_("\
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2003-07-14 00:15:59 +08:00
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offsetof (struct sigcontext, sc_rip) yields %d instead of %d.\n\
|
2005-01-05 Baurjan Ismagulov <ibr@ata.cs.hun.edu.tr>
Committed by Andrew Cagney.
* ada-valprint.c, aix-thread.c, alpha-nat.c: I18n markup.
* alphabsd-nat.c, alphanbsd-tdep.c, amd64-linux-nat.c: I18n markup.
* amd64-tdep.c, amd64bsd-nat.c, amd64fbsd-nat.c: I18n markup.
* arch-utils.c, arm-linux-nat.c, arm-tdep.c: I18n markup.
* armnbsd-nat.c, armnbsd-tdep.c, auxv.c, avr-tdep.c: I18n markup.
* aix-thread.c (_initialize_aix_thread): Get rid of the
deprecated_add_show_from_set call.
* alpha-tdep.c (_initialize_alpha_tdep): Ditto.
* arm-tdep.c (_initialize_arm_tdep): Ditto.
* command.h (add_setshow_enum_cmd): Add arguments for returning
new list elements.
* cli/cli-decode.c (add_setshow_enum_cmd): Ditto.
* mips-tdep.c (_initialize_mips_tdep): Modify calls to
add_setshow_enum_cmd.
2005-01-05 23:43:50 +08:00
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Please report this to <bug-gdb@gnu.org>."),
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2003-07-14 00:15:59 +08:00
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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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{
|
2005-01-05 Baurjan Ismagulov <ibr@ata.cs.hun.edu.tr>
Committed by Andrew Cagney.
* ada-valprint.c, aix-thread.c, alpha-nat.c: I18n markup.
* alphabsd-nat.c, alphanbsd-tdep.c, amd64-linux-nat.c: I18n markup.
* amd64-tdep.c, amd64bsd-nat.c, amd64fbsd-nat.c: I18n markup.
* arch-utils.c, arm-linux-nat.c, arm-tdep.c: I18n markup.
* armnbsd-nat.c, armnbsd-tdep.c, auxv.c, avr-tdep.c: I18n markup.
* aix-thread.c (_initialize_aix_thread): Get rid of the
deprecated_add_show_from_set call.
* alpha-tdep.c (_initialize_alpha_tdep): Ditto.
* arm-tdep.c (_initialize_arm_tdep): Ditto.
* command.h (add_setshow_enum_cmd): Add arguments for returning
new list elements.
* cli/cli-decode.c (add_setshow_enum_cmd): Ditto.
* mips-tdep.c (_initialize_mips_tdep): Modify calls to
add_setshow_enum_cmd.
2005-01-05 23:43:50 +08:00
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warning (_("\
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2003-07-14 00:15:59 +08:00
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offsetof (struct sigcontext, sc_rsp) yields %d instead of %d.\n\
|
2005-01-05 Baurjan Ismagulov <ibr@ata.cs.hun.edu.tr>
Committed by Andrew Cagney.
* ada-valprint.c, aix-thread.c, alpha-nat.c: I18n markup.
* alphabsd-nat.c, alphanbsd-tdep.c, amd64-linux-nat.c: I18n markup.
* amd64-tdep.c, amd64bsd-nat.c, amd64fbsd-nat.c: I18n markup.
* arch-utils.c, arm-linux-nat.c, arm-tdep.c: I18n markup.
* armnbsd-nat.c, armnbsd-tdep.c, auxv.c, avr-tdep.c: I18n markup.
* aix-thread.c (_initialize_aix_thread): Get rid of the
deprecated_add_show_from_set call.
* alpha-tdep.c (_initialize_alpha_tdep): Ditto.
* arm-tdep.c (_initialize_arm_tdep): Ditto.
* command.h (add_setshow_enum_cmd): Add arguments for returning
new list elements.
* cli/cli-decode.c (add_setshow_enum_cmd): Ditto.
* mips-tdep.c (_initialize_mips_tdep): Modify calls to
add_setshow_enum_cmd.
2005-01-05 23:43:50 +08:00
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Please report this to <bug-gdb@gnu.org>."),
|
2003-07-14 00:15:59 +08:00
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|
offset, SC_RSP_OFFSET);
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}
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|
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|
|
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SC_RSP_OFFSET = offset;
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|
|
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/* And the frame pointer. */
|
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offset = offsetof (struct sigcontext, sc_rbp);
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|
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|
|
|
|
|
|
if (SC_RBP_OFFSET != offset)
|
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|
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{
|
2005-01-05 Baurjan Ismagulov <ibr@ata.cs.hun.edu.tr>
Committed by Andrew Cagney.
* ada-valprint.c, aix-thread.c, alpha-nat.c: I18n markup.
* alphabsd-nat.c, alphanbsd-tdep.c, amd64-linux-nat.c: I18n markup.
* amd64-tdep.c, amd64bsd-nat.c, amd64fbsd-nat.c: I18n markup.
* arch-utils.c, arm-linux-nat.c, arm-tdep.c: I18n markup.
* armnbsd-nat.c, armnbsd-tdep.c, auxv.c, avr-tdep.c: I18n markup.
* aix-thread.c (_initialize_aix_thread): Get rid of the
deprecated_add_show_from_set call.
* alpha-tdep.c (_initialize_alpha_tdep): Ditto.
* arm-tdep.c (_initialize_arm_tdep): Ditto.
* command.h (add_setshow_enum_cmd): Add arguments for returning
new list elements.
* cli/cli-decode.c (add_setshow_enum_cmd): Ditto.
* mips-tdep.c (_initialize_mips_tdep): Modify calls to
add_setshow_enum_cmd.
2005-01-05 23:43:50 +08:00
|
|
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|
warning (_("\
|
2003-07-14 00:15:59 +08:00
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|
offsetof (struct sigcontext, sc_rbp) yields %d instead of %d.\n\
|
2005-01-05 Baurjan Ismagulov <ibr@ata.cs.hun.edu.tr>
Committed by Andrew Cagney.
* ada-valprint.c, aix-thread.c, alpha-nat.c: I18n markup.
* alphabsd-nat.c, alphanbsd-tdep.c, amd64-linux-nat.c: I18n markup.
* amd64-tdep.c, amd64bsd-nat.c, amd64fbsd-nat.c: I18n markup.
* arch-utils.c, arm-linux-nat.c, arm-tdep.c: I18n markup.
* armnbsd-nat.c, armnbsd-tdep.c, auxv.c, avr-tdep.c: I18n markup.
* aix-thread.c (_initialize_aix_thread): Get rid of the
deprecated_add_show_from_set call.
* alpha-tdep.c (_initialize_alpha_tdep): Ditto.
* arm-tdep.c (_initialize_arm_tdep): Ditto.
* command.h (add_setshow_enum_cmd): Add arguments for returning
new list elements.
* cli/cli-decode.c (add_setshow_enum_cmd): Ditto.
* mips-tdep.c (_initialize_mips_tdep): Modify calls to
add_setshow_enum_cmd.
2005-01-05 23:43:50 +08:00
|
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|
|
Please report this to <bug-gdb@gnu.org>."),
|
2003-07-14 00:15:59 +08:00
|
|
|
|
offset, SC_RBP_OFFSET);
|
|
|
|
|
}
|
|
|
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|
|
|
|
|
|
SC_RBP_OFFSET = offset;
|
|
|
|
|
|
|
|
|
|
/* FreeBSD provides a kern.ps_strings sysctl that we can use to
|
|
|
|
|
locate the sigtramp. That way we can still recognize a sigtramp
|
|
|
|
|
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];
|
2003-09-16 04:05:17 +08:00
|
|
|
|
long ps_strings;
|
2003-07-14 00:15:59 +08:00
|
|
|
|
size_t len;
|
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|
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|
|
mib[0] = CTL_KERN;
|
|
|
|
|
mib[1] = KERN_PS_STRINGS;
|
|
|
|
|
len = sizeof (ps_strings);
|
|
|
|
|
if (sysctl (mib, 2, &ps_strings, &len, NULL, 0) == 0)
|
|
|
|
|
{
|
2004-02-23 03:14:55 +08:00
|
|
|
|
amd64fbsd_sigtramp_start_addr = ps_strings - 32;
|
|
|
|
|
amd64fbsd_sigtramp_end_addr = ps_strings;
|
2003-07-14 00:15:59 +08:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|