1903f0e64b
All callers updated. (amd64_get_insn_details): Handle more 3-byte opcode insns. (amd64_breakpoint_p): Delete. (amd64_displaced_step_fixup): When fixing up after stepping an int3, don't back up pc to the start of the int3. * i386-tdep.c: #include opcode/i386.h. (i386_skip_prefixes): New function. (i386_absolute_jmp_p): Constify argument. (i386_absolute_call_p,i386_ret_p,i386_call_p,i386_syscall_p): Ditto. (i386_breakpoint_p): Delete. (i386_displaced_step_fixup): Handle unnecessary or redundant prefixes. When fixing up after stepping an int3, don't back up pc to the start of the int3. * gdb.arch/amd64-disp-step.S (test_int3): New test. * gdb.arch/amd64-disp-step.exp (test_int3): New test. * gdb.arch/i386-disp-step.S (test_prefixed_abs_jump): New test. (test_prefixed_syscall,test_int3): New tests. * gdb.arch/i386-disp-step.exp (test_prefixed_abs_jump): New test. (test_prefixed_syscall,test_int3): New tests.
181 lines
3.2 KiB
ArmAsm
181 lines
3.2 KiB
ArmAsm
/* Copyright 2009 Free Software Foundation, Inc.
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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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This file is part of the gdb testsuite.
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It tests displaced stepping over various insns that require special
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handling. */
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.text
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.global main
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main:
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nop
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/***********************************************/
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/* test call/ret */
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.global test_call
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test_call:
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call test_call_subr
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nop
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.global test_ret_end
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test_ret_end:
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nop
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/***********************************************/
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/* test abs-jmp/rep-ret */
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test_abs_jmp_setup:
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mov $test_abs_jmp_return,%rdx
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push %rdx
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mov $test_abs_jmp_subr,%rdx
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.global test_abs_jmp
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test_abs_jmp:
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jmp *%rdx
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test_abs_jmp_return:
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nop
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.global test_rep_ret_end
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test_rep_ret_end:
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nop
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/***********************************************/
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/* test syscall */
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.global test_syscall
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mov $0x27,%eax /* getpid */
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test_syscall:
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syscall
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nop
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test_syscall_end:
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nop
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/***********************************************/
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/* Test stepping over int3.
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The prefixes are pointless, but it's possible, so we exercise it. */
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nop
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.global test_int3
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test_int3:
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repz
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repz
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int3
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nop
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.global test_int3_end
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test_int3_end:
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nop
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/***********************************************/
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/* test rip-relative
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GDB picks a spare register to hold the rip-relative address.
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Exercise all the possibilities (rax-rdi, sans rsp). */
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.global test_rip_rax
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test_rip_rax:
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add answer(%rip),%rax
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.global test_rip_rax_end
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test_rip_rax_end:
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nop
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.global test_rip_rbx
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test_rip_rbx:
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add answer(%rip),%rbx
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.global test_rip_rbx_end
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test_rip_rbx_end:
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nop
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.global test_rip_rcx
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test_rip_rcx:
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add answer(%rip),%rcx
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.global test_rip_rcx_end
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test_rip_rcx_end:
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nop
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.global test_rip_rdx
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test_rip_rdx:
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add answer(%rip),%rdx
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.global test_rip_rdx_end
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test_rip_rdx_end:
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nop
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.global test_rip_rbp
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test_rip_rbp:
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add answer(%rip),%rbp
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.global test_rip_rbp_end
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test_rip_rbp_end:
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nop
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.global test_rip_rsi
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test_rip_rsi:
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add answer(%rip),%rsi
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.global test_rip_rsi_end
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test_rip_rsi_end:
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nop
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.global test_rip_rdi
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test_rip_rdi:
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add answer(%rip),%rdi
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.global test_rip_rdi_end
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test_rip_rdi_end:
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nop
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/* skip over test data */
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jmp done
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/* test rip-relative data */
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answer: .8byte 42
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/***********************************************/
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/* all done */
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done:
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mov $0,%rdi
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call exit
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hlt
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/***********************************************/
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/* subroutine to help test call/ret */
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test_call_subr:
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nop
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.global test_call_end
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test_call_end:
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nop
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.global test_ret
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test_ret:
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ret
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/***********************************************/
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/* subroutine to help test abs-jmp/rep-ret */
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test_abs_jmp_subr:
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nop
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.global test_abs_jmp_end
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test_abs_jmp_end:
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nop
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.global test_rep_ret
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test_rep_ret:
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repz
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ret
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