From Michal Ludvig <mludvig@suse.cz>:
* i386-tdep.h (struct gdbarch_tdep): Add members `sc_reg_offset' and `sc_num_regs'. (I386_EAX_REGNUM, I386_EDX_REGNUM, I386_ESP_REGNUM, I386_EBP_REGNUM, I386_EIP_REGNUM, I386_EFLAGS_REGNUM, I386_ST0_REGNUM): Move here from... * i386-tdep.c: ... here. (I386_NUM_SAVED_REGS): Define to I386_NUM_REGS. (i386_sigtramp_frame_cache): Use `sc_reg_offset' to find saved registers if possible. (i386_gdbarch_init): Initialize TDEP->sc_reg_offset. * i386bsd-tdep.c (i386bsd_sc_pc_offset, i386bsd_sc_sp_offset): Remove variables. (i386bsd_sc_reg_offset): New variable. (i386bsd_init_abi): Initialize TDEP->sc_reg_offset and TDEP->sc_num_regs instead of TDEP->sc_pc_offset and TDEP->sc_sp_offset. (i386fbsd_sc_reg_offset): New variable. (i386fbsdaout_init_abi): Initialize TDEP->sc_reg_offset and TDEP->sc_num_regs. (i386fbsd4_sc_pc_offset, i386fbsd4_sc_sp_offset): Remove variables. (i386fbsd4_sc_reg_offset): New variable. (i3864bsd4_init_abi): Initialize TDEP->sc_reg_offset and TDEP->sc_num_regs instead of TDEP->sc_pc_offset and TDEP->sc_sp_offset. * i386-linux-tdep.c (i386_linux_sc_reg_offset): New variable. (i386_linux_init_abi): Set TDEP->sc_reg_offset and TDEP->sc_num_regs. * i386nbsd-tdep.c (i386nbsd_sc_pc_offset, i386nbsd_sc_sp_offset): Remove variables. (i386nbsd_sc_reg_offset): New variable. (i386nbsd_init_abi): Initialize TDEP->sc_reg_offset and TDEP->sc_num_regs instead of TDEP->sc_pc_offset and TDEP->sc_sp_offset. * i386obsd-tdep.c (i386obsd_sc_pc_offset, i386obsd_sc_sp_offset): Remove variables. (i386obsd_sc_reg_offset): New variable. (i386obsd_init_abi): Initialize TDEP->sc_reg_offset and TDEP->sc_num_regs instead of TDEP->sc_pc_offset and TDEP->sc_sp_offset. * i386bsd-nat.c (_initialize_i386bsd_nat): Adjust for changes in i386bsd-tdep.c, i386nbsd-tdep.c and i386obsd-tdep.c. Add check for frame pointer offset in `struct sigcontext'.
This commit is contained in:
parent
25ab47902d
commit
a338618604
@ -1,3 +1,49 @@
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2003-05-31 Mark Kettenis <kettenis@gnu.org>
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From Michal Ludvig <mludvig@suse.cz>:
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* i386-tdep.h (struct gdbarch_tdep): Add members `sc_reg_offset'
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and `sc_num_regs'.
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(I386_EAX_REGNUM, I386_EDX_REGNUM, I386_ESP_REGNUM,
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I386_EBP_REGNUM, I386_EIP_REGNUM, I386_EFLAGS_REGNUM,
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I386_ST0_REGNUM): Move here from...
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* i386-tdep.c: ... here.
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(I386_NUM_SAVED_REGS): Define to I386_NUM_REGS.
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(i386_sigtramp_frame_cache): Use `sc_reg_offset' to find saved
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registers if possible.
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(i386_gdbarch_init): Initialize TDEP->sc_reg_offset.
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* i386bsd-tdep.c (i386bsd_sc_pc_offset, i386bsd_sc_sp_offset):
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Remove variables.
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(i386bsd_sc_reg_offset): New variable.
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(i386bsd_init_abi): Initialize TDEP->sc_reg_offset and
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TDEP->sc_num_regs instead of TDEP->sc_pc_offset and
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TDEP->sc_sp_offset.
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(i386fbsd_sc_reg_offset): New variable.
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(i386fbsdaout_init_abi): Initialize TDEP->sc_reg_offset and
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TDEP->sc_num_regs.
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(i386fbsd4_sc_pc_offset, i386fbsd4_sc_sp_offset): Remove
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variables.
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(i386fbsd4_sc_reg_offset): New variable.
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(i3864bsd4_init_abi): Initialize TDEP->sc_reg_offset and
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TDEP->sc_num_regs instead of TDEP->sc_pc_offset and
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TDEP->sc_sp_offset.
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* i386-linux-tdep.c (i386_linux_sc_reg_offset): New variable.
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(i386_linux_init_abi): Set TDEP->sc_reg_offset and TDEP->sc_num_regs.
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* i386nbsd-tdep.c (i386nbsd_sc_pc_offset, i386nbsd_sc_sp_offset):
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Remove variables.
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(i386nbsd_sc_reg_offset): New variable.
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(i386nbsd_init_abi): Initialize TDEP->sc_reg_offset and
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TDEP->sc_num_regs instead of TDEP->sc_pc_offset and
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TDEP->sc_sp_offset.
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* i386obsd-tdep.c (i386obsd_sc_pc_offset, i386obsd_sc_sp_offset):
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Remove variables.
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(i386obsd_sc_reg_offset): New variable.
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(i386obsd_init_abi): Initialize TDEP->sc_reg_offset and
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TDEP->sc_num_regs instead of TDEP->sc_pc_offset and
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TDEP->sc_sp_offset.
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* i386bsd-nat.c (_initialize_i386bsd_nat): Adjust for changes in
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i386bsd-tdep.c, i386nbsd-tdep.c and i386obsd-tdep.c. Add check
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for frame pointer offset in `struct sigcontext'.
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2003-05-31 Andrew Cagney <cagney@redhat.com>
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* mips-tdep.c (mips_gdbarch_init): Do not set the deprecated
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@ -439,6 +439,27 @@ i386_linux_svr4_fetch_link_map_offsets (void)
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}
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/* From <asm/sigcontext.h>. */
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static int i386_linux_sc_reg_offset[I386_NUM_GREGS] =
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{
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11 * 4, /* %eax */
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10 * 4, /* %ecx */
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9 * 4, /* %edx */
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8 * 4, /* %ebx */
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7 * 4, /* %esp */
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6 * 4, /* %ebp */
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5 * 4, /* %esi */
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4 * 4, /* %edi */
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14 * 4, /* %eip */
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16 * 4, /* %eflags */
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15 * 4, /* %cs */
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18 * 4, /* %ss */
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3 * 4, /* %ds */
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2 * 4, /* %es */
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1 * 4, /* %fs */
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0 * 4 /* %gs */
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};
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static void
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i386_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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{
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@ -462,8 +483,8 @@ i386_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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tdep->jb_pc_offset = 20; /* From <bits/setjmp.h>. */
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tdep->sigcontext_addr = i386_linux_sigcontext_addr;
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tdep->sc_pc_offset = 14 * 4; /* From <asm/sigcontext.h>. */
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tdep->sc_sp_offset = 7 * 4;
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tdep->sc_reg_offset = i386_linux_sc_reg_offset;
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tdep->sc_num_regs = I386_NUM_GREGS;
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/* When the i386 Linux kernel calls a signal handler, the return
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address points to a bit of code on the stack. This function is
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@ -47,16 +47,6 @@
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#include "i386-tdep.h"
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#include "i387-tdep.h"
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/* Register numbers of various important registers. */
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#define I386_EAX_REGNUM 0 /* %eax */
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#define I386_EDX_REGNUM 2 /* %edx */
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#define I386_ESP_REGNUM 4 /* %esp */
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#define I386_EBP_REGNUM 5 /* %ebp */
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#define I386_EIP_REGNUM 8 /* %eip */
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#define I386_EFLAGS_REGNUM 9 /* %eflags */
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#define I386_ST0_REGNUM 16 /* %st(0) */
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/* Names of the registers. The first 10 registers match the register
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numbering scheme used by GCC for stabs and DWARF. */
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@ -248,7 +238,7 @@ i386_breakpoint_from_pc (CORE_ADDR *pc, int *len)
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/* The maximum number of saved registers. This should include all
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registers mentioned above, and %eip. */
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#define I386_NUM_SAVED_REGS 9
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#define I386_NUM_SAVED_REGS I386_NUM_GREGS
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struct i386_frame_cache
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{
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@ -884,8 +874,21 @@ i386_sigtramp_frame_cache (struct frame_info *next_frame, void **this_cache)
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cache->base = extract_unsigned_integer (buf, 4) - 4;
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addr = tdep->sigcontext_addr (next_frame);
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cache->saved_regs[I386_EIP_REGNUM] = addr + tdep->sc_pc_offset;
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cache->saved_regs[I386_ESP_REGNUM] = addr + tdep->sc_sp_offset;
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if (tdep->sc_reg_offset)
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{
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int i;
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gdb_assert (tdep->sc_num_regs <= I386_NUM_SAVED_REGS);
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for (i = 0; i < tdep->sc_num_regs; i++)
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if (tdep->sc_reg_offset[i] != -1)
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cache->saved_regs[i] = addr + tdep->sc_reg_offset[i];
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}
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else
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{
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cache->saved_regs[I386_EIP_REGNUM] = addr + tdep->sc_pc_offset;
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cache->saved_regs[I386_ESP_REGNUM] = addr + tdep->sc_sp_offset;
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}
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*this_cache = cache;
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return cache;
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@ -1621,6 +1624,7 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
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tdep->sigtramp_start = 0;
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tdep->sigtramp_end = 0;
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tdep->sigcontext_addr = NULL;
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tdep->sc_reg_offset = NULL;
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tdep->sc_pc_offset = -1;
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tdep->sc_sp_offset = -1;
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@ -71,7 +71,12 @@ struct gdbarch_tdep
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/* Get address of sigcontext for sigtramp. */
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CORE_ADDR (*sigcontext_addr) (struct frame_info *);
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/* Offset of saved PC and SP in `struct sigcontext'. */
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/* Offset of registers in `struct sigcontext'. */
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int *sc_reg_offset;
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int sc_num_regs;
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/* Offset of saved PC and SP in `struct sigcontext'. Usage of these
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is deprecated, please use `sc_reg_offset' instead. */
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int sc_pc_offset;
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int sc_sp_offset;
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};
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@ -137,6 +142,16 @@ extern int i386_mxcsr_regnum_p (int regnum);
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#define FDS_REGNUM FOSEG_REGNUM
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#define FDOFF_REGNUM FOOFF_REGNUM
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/* Register numbers of various important registers. */
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#define I386_EAX_REGNUM 0 /* %eax */
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#define I386_EDX_REGNUM 2 /* %edx */
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#define I386_ESP_REGNUM 4 /* %esp */
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#define I386_EBP_REGNUM 5 /* %ebp */
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#define I386_EIP_REGNUM 8 /* %eip */
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#define I386_EFLAGS_REGNUM 9 /* %eflags */
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#define I386_ST0_REGNUM 16 /* %st(0) */
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#define I386_NUM_GREGS 16
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#define I386_NUM_FREGS 16
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#define I386_NUM_XREGS 9
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@ -386,8 +386,7 @@ kernel_u_size (void)
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void
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_initialize_i386bsd_nat (void)
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{
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int sc_pc_offset;
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int sc_sp_offset;
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int offset;
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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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@ -396,51 +395,69 @@ _initialize_i386bsd_nat (void)
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information. */
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#if defined (__FreeBSD_version) && __FreeBSD_version >= 400011
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extern int i386fbsd4_sc_pc_offset;
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extern int i386fbsd4_sc_sp_offset;
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#define SC_PC_OFFSET i386fbsd4_sc_pc_offset
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#define SC_SP_OFFSET i386fbsd4_sc_sp_offset
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extern int i386fbsd4_sc_reg_offset[];
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#define SC_REG_OFFSET i386fbsd4_sc_reg_offset
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#elif defined (__FreeBSD_version) && __FreeBSD_version >= 300005
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extern int i386fbsd_sc_reg_offset[];
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#define SC_REG_OFFSET i386fbsd_sc_reg_offset
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#elif defined (NetBSD) || defined (__NetBSD_Version__)
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extern int i386nbsd_sc_pc_offset;
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extern int i386nbsd_sc_sp_offset;
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#define SC_PC_OFFSET i386nbsd_sc_pc_offset
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#define SC_SP_OFFSET i386nbsd_sc_sp_offset
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extern int i386nbsd_sc_reg_offset[];
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#define SC_REG_OFFSET i386nbsd_sc_reg_offset
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#elif defined (OpenBSD)
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extern int i386obsd_sc_pc_offset;
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extern int i386obsd_sc_sp_offset;
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#define SC_PC_OFFSET i386obsd_sc_pc_offset
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#define SC_SP_OFFSET i386obsd_sc_sp_offset
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extern int i386obsd_sc_reg_offset[];
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#define SC_REG_OFFSET i386obsd_sc_reg_offset
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#else
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extern int i386bsd_sc_pc_offset;
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extern int i386bsd_sc_sp_offset;
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#define SC_PC_OFFSET i386bsd_sc_pc_offset
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#define SC_SP_OFFSET i386bsd_sc_sp_offset
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extern int i386bsd_sc_reg_offset[];
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#define SC_PC_OFFSET i386bsd_sc_reg_offset
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#endif
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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. More checks could be added, but would
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involve adding configure checks for the appropriate structure
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members, since older BSD's don't provide all of them. */
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#define SC_PC_OFFSET SC_REG_OFFSET[I386_EIP_REGNUM]
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#define SC_SP_OFFSET SC_REG_OFFSET[I386_ESP_REGNUM]
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#define SC_FP_OFFSET SC_REG_OFFSET[I386_EBP_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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sc_pc_offset = offsetof (struct sigcontext, sc_pc);
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offset = offsetof (struct sigcontext, sc_pc);
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if (SC_PC_OFFSET != sc_pc_offset)
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if (SC_PC_OFFSET != offset)
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{
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warning ("\
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offsetof (struct sigcontext, sc_pc) yields %d instead of %d.\n\
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Please report this to <bug-gdb@gnu.org>.",
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sc_pc_offset, SC_PC_OFFSET);
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Please report this to <bug-gdb@gnu.org>.",
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offset, SC_PC_OFFSET);
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}
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SC_PC_OFFSET = sc_pc_offset;
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SC_PC_OFFSET = offset;
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/* Likewise for the stack pointer. */
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sc_sp_offset = offsetof (struct sigcontext, sc_sp);
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offset = offsetof (struct sigcontext, sc_sp);
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if (SC_SP_OFFSET != sc_sp_offset)
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if (SC_SP_OFFSET != offset)
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{
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warning ("\
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offsetof (struct sigcontext, sc_sp) yields %d instead of %d.\n\
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Please report this to <bug-gdb@gnu.org>.",
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sc_sp_offset, SC_SP_OFFSET);
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offset, SC_SP_OFFSET);
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}
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SC_SP_OFFSET = sc_sp_offset;
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SC_SP_OFFSET = offset;
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/* And the frame pointer. */
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offset = offsetof (struct sigcontext, sc_fp);
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if (SC_FP_OFFSET != offset)
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{
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warning ("\
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offsetof (struct sigcontext, sc_fp) yields %d instead of %d.\n\
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Please report this to <bug-gdb@gnu.org>.",
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offset, SC_FP_OFFSET);
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}
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SC_FP_OFFSET = offset;
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}
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/* Traditional BSD (4.3 BSD, still used for BSDI and 386BSD). */
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/* From <machine/signal.h>. */
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int i386bsd_sc_pc_offset = 20;
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int i386bsd_sc_sp_offset = 8;
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int i386bsd_sc_reg_offset[I386_NUM_GREGS] =
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{
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-1, /* %eax */
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-1, /* %ecx */
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-1, /* %edx */
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-1, /* %ebx */
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8 + 0 * 4, /* %esp */
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8 + 1 * 4, /* %ebp */
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-1, /* %esi */
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-1, /* %edi */
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8 + 3 * 4, /* %eip */
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8 + 4 * 4, /* %eflags */
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-1, /* %cs */
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-1, /* %ss */
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-1, /* %ds */
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-1, /* %es */
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-1, /* %fs */
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-1 /* %gs */
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};
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void
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i386bsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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@ -109,8 +126,8 @@ i386bsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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tdep->sigtramp_start = 0xfdbfdfc0;
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tdep->sigtramp_end = 0xfdbfe000;
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tdep->sigcontext_addr = i386bsd_sigcontext_addr;
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tdep->sc_pc_offset = i386bsd_sc_pc_offset;
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tdep->sc_sp_offset = i386bsd_sc_sp_offset;
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tdep->sc_reg_offset = i386bsd_sc_reg_offset;
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tdep->sc_num_regs = I386_NUM_GREGS;
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}
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/* FreeBSD 3.0-RELEASE or later. */
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@ -118,6 +135,27 @@ i386bsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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CORE_ADDR i386fbsd_sigtramp_start = 0xbfbfdf20;
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CORE_ADDR i386fbsd_sigtramp_end = 0xbfbfdff0;
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/* From <machine/signal.h>. */
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int i386fbsd_sc_reg_offset[I386_NUM_GREGS] =
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{
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8 + 14 * 4, /* %eax */
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8 + 13 * 4, /* %ecx */
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8 + 12 * 4, /* %edx */
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8 + 11 * 4, /* %ebx */
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8 + 0 * 4, /* %esp */
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8 + 1 * 4, /* %ebp */
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8 + 10 * 4, /* %esi */
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8 + 9 * 4, /* %edi */
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8 + 3 * 4, /* %eip */
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8 + 4 * 4, /* %eflags */
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8 + 7 * 4, /* %cs */
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8 + 8 * 4, /* %ss */
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8 + 6 * 4, /* %ds */
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8 + 5 * 4, /* %es */
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8 + 15 * 4, /* %fs */
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8 + 16 * 4 /* %gs */
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};
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static void
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i386fbsdaout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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{
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@ -132,6 +170,10 @@ i386fbsdaout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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/* FreeBSD uses a different memory layout. */
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tdep->sigtramp_start = i386fbsd_sigtramp_start;
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tdep->sigtramp_end = i386fbsd_sigtramp_end;
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/* FreeBSD has a more complete `struct sigcontext'. */
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tdep->sc_reg_offset = i386fbsd_sc_reg_offset;
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tdep->sc_num_regs = I386_NUM_GREGS;
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}
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static void
|
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@ -151,8 +193,25 @@ i386fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||||
/* FreeBSD 4.0-RELEASE or later. */
|
||||
|
||||
/* From <machine/signal.h>. */
|
||||
int i386fbsd4_sc_pc_offset = 76;
|
||||
int i386fbsd4_sc_sp_offset = 88;
|
||||
int i386fbsd4_sc_reg_offset[I386_NUM_GREGS] =
|
||||
{
|
||||
20 + 11 * 4, /* %eax */
|
||||
20 + 10 * 4, /* %ecx */
|
||||
20 + 9 * 4, /* %edx */
|
||||
20 + 8 * 4, /* %ebx */
|
||||
20 + 17 * 4, /* %esp */
|
||||
20 + 6 * 4, /* %ebp */
|
||||
20 + 5 * 4, /* %esi */
|
||||
20 + 4 * 4, /* %edi */
|
||||
20 + 14 * 4, /* %eip */
|
||||
20 + 16 * 4, /* %eflags */
|
||||
20 + 15 * 4, /* %cs */
|
||||
20 + 18 * 4, /* %ss */
|
||||
20 + 3 * 4, /* %ds */
|
||||
20 + 2 * 4, /* %es */
|
||||
20 + 1 * 4, /* %fs */
|
||||
20 + 0 * 4 /* %gs */
|
||||
};
|
||||
|
||||
static void
|
||||
i386fbsd4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||||
@ -164,8 +223,8 @@ i386fbsd4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||||
i386fbsd_init_abi (info, gdbarch);
|
||||
|
||||
/* FreeBSD 4.0 introduced a new `struct sigcontext'. */
|
||||
tdep->sc_pc_offset = i386fbsd4_sc_pc_offset;
|
||||
tdep->sc_sp_offset = i386fbsd4_sc_sp_offset;
|
||||
tdep->sc_reg_offset = i386fbsd4_sc_reg_offset;
|
||||
tdep->sc_num_regs = I386_NUM_GREGS;
|
||||
}
|
||||
|
||||
|
||||
|
@ -239,8 +239,25 @@ i386nbsd_pc_in_sigtramp (CORE_ADDR pc, char *name)
|
||||
}
|
||||
|
||||
/* From <machine/signal.h>. */
|
||||
int i386nbsd_sc_pc_offset = 44;
|
||||
int i386nbsd_sc_sp_offset = 56;
|
||||
int i386nbsd_sc_reg_offset[I386_NUM_GREGS] =
|
||||
{
|
||||
10 * 4, /* %eax */
|
||||
9 * 4, /* %ecx */
|
||||
8 * 4, /* %edx */
|
||||
7 * 4, /* %ebx */
|
||||
14 * 4, /* %esp */
|
||||
6 * 4, /* %ebp */
|
||||
5 * 4, /* %esi */
|
||||
4 * 4, /* %edi */
|
||||
11 * 4, /* %eip */
|
||||
13 * 4, /* %eflags */
|
||||
12 * 4, /* %cs */
|
||||
15 * 4, /* %ss */
|
||||
3 * 4, /* %ds */
|
||||
2 * 4, /* %es */
|
||||
1 * 4, /* %fs */
|
||||
0 * 4 /* %gs */
|
||||
};
|
||||
|
||||
static void
|
||||
i386nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||||
@ -263,8 +280,8 @@ i386nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||||
|
||||
/* NetBSD has a `struct sigcontext' that's different from the
|
||||
origional 4.3 BSD. */
|
||||
tdep->sc_pc_offset = i386nbsd_sc_pc_offset;
|
||||
tdep->sc_sp_offset = i386nbsd_sc_sp_offset;
|
||||
tdep->sc_reg_offset = i386nbsd_sc_reg_offset;
|
||||
tdep->sc_num_regs = I386_NUM_GREGS;
|
||||
}
|
||||
|
||||
/* NetBSD ELF. */
|
||||
|
@ -83,8 +83,25 @@ CORE_ADDR i386obsd_sigtramp_start = 0xbfbfdf20;
|
||||
CORE_ADDR i386obsd_sigtramp_end = 0xbfbfdff0;
|
||||
|
||||
/* From <machine/signal.h>. */
|
||||
int i386obsd_sc_pc_offset = 44;
|
||||
int i386obsd_sc_sp_offset = 56;
|
||||
int i386obsd_sc_reg_offset[I386_NUM_GREGS] =
|
||||
{
|
||||
10 * 4, /* %eax */
|
||||
9 * 4, /* %ecx */
|
||||
8 * 4, /* %edx */
|
||||
7 * 4, /* %ebx */
|
||||
14 * 4, /* %esp */
|
||||
6 * 4, /* %ebp */
|
||||
5 * 4, /* %esi */
|
||||
4 * 4, /* %edi */
|
||||
11 * 4, /* %eip */
|
||||
13 * 4, /* %eflags */
|
||||
12 * 4, /* %cs */
|
||||
15 * 4, /* %ss */
|
||||
3 * 4, /* %ds */
|
||||
2 * 4, /* %es */
|
||||
1 * 4, /* %fs */
|
||||
0 * 4 /* %gs */
|
||||
};
|
||||
|
||||
static void
|
||||
i386obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||||
@ -103,8 +120,8 @@ i386obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||||
|
||||
/* OpenBSD has a `struct sigcontext' that's different from the
|
||||
origional 4.3 BSD. */
|
||||
tdep->sc_pc_offset = i386obsd_sc_pc_offset;
|
||||
tdep->sc_sp_offset = i386obsd_sc_sp_offset;
|
||||
tdep->sc_reg_offset = i386obsd_sc_reg_offset;
|
||||
tdep->sc_num_regs = I386_NUM_GREGS;
|
||||
}
|
||||
|
||||
void
|
||||
|
Loading…
Reference in New Issue
Block a user