237fc4c9cd
gdb/ * gdbarch.sh (max_insn_length): New 'variable'. (displaced_step_copy, displaced_step_fixup) (displaced_step_free_closure, displaced_step_location): New functions. (struct displaced_step_closure): Add forward declaration. * gdbarch.c, gdbarch.h: Regenerated. * arch-utils.c: #include "objfiles.h". (simple_displaced_step_copy_insn) (simple_displaced_step_free_closure) (displaced_step_at_entry_point): New functions. * arch-utils.h (simple_displaced_step_copy_insn) (simple_displaced_step_free_closure) (displaced_step_at_entry_point): New prototypes. * i386-tdep.c (I386_MAX_INSN_LEN): Rename to... (I386_MAX_MATCHED_INSN_LEN): ... this. (i386_absolute_jmp_p, i386_absolute_call_p) (i386_ret_p, i386_call_p, i386_breakpoint_p, i386_syscall_p) (i386_displaced_step_fixup): New functions. (struct i386_insn, i386_match_insn): Update. (i386_gdbarch_init): Set gdbarch_max_insn_length. * i386-tdep.h (I386_MAX_INSN_LEN): New. (i386_displaced_step_fixup): New prototype. * i386-linux-tdep.c (i386_linux_init_abi): Include "arch-utils.h". Register gdbarch_displaced_step_copy, gdbarch_displaced_step_fixup, gdbarch_displaced_step_free_closure, and gdbarch_displaced_step_location functions. * infrun.c (debug_displaced): New variable. (show_debug_displaced): New function. (struct displaced_step_request): New struct. (displaced_step_request_queue, displaced_step_ptid) (displaced_step_gdbarch, displaced_step_closure) (displaced_step_original, displaced_step_copy) (displaced_step_saved_copy, can_use_displaced_stepping): New variables. (show_can_use_displaced_stepping, use_displaced_stepping) (displaced_step_clear, cleanup_displaced_step_closure) (displaced_step_dump_bytes, displaced_step_prepare) (displaced_step_clear_cleanup, write_memory_ptid) (displaced_step_fixup): New functions. (resume): Call displaced_step_prepare. (proceed): Call read_pc once, and remember the value. If using displaced stepping, don't remove breakpoints. (handle_inferior_event): Call displaced_step_fixup. Add some debugging output. When we try to step over a breakpoint, but get a signal to deliver to the thread instead, ensure the step-resume breakpoint is actually inserted. If a thread hop is needed, and displaced stepping is enabled, don't remove breakpoints. (init_wait_for_inferior): Call displaced_step_clear. (_initialize_infrun): Add "set debug displaced" command. Add "maint set can-use-displaced-stepping" command. Clear displaced_step_ptid. * inferior.h (debug_displaced): Declare variable. (displaced_step_dump_bytes): Declare function. * Makefile.in (arch-utils.o, i386-linux-tdep.o): Update dependencies. gdb/testsuite/ * gdb.asm/asmsrc1.s: Add scratch space. gdb/doc/ * gdb.texinfo (Debugging Output): Document "set/show debug displaced". (Maintenance Commands): Document "maint set/show can-use-displaced-stepping".
86 lines
1.8 KiB
ArmAsm
86 lines
1.8 KiB
ArmAsm
.include "common.inc"
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.include "arch.inc"
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comment "WARNING: asm-source.exp checks for line numbers printed by gdb."
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comment "Be careful about changing this file without also changing"
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comment "asm-source.exp."
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comment "This file is not linked with crt0."
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comment "Provide very simplistic equivalent."
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.global _start
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gdbasm_declare _start
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gdbasm_startup
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gdbasm_call main
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gdbasm_exit0
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gdbasm_end _start
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comment "Displaced stepping requires scratch space at _start"
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comment "at least as large as the largest instruction. No"
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comment "breakpoints should be set within the scratch space."
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gdbasm_several_nops
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gdbasm_several_nops
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gdbasm_several_nops
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gdbasm_several_nops
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gdbasm_several_nops
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gdbasm_several_nops
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gdbasm_several_nops
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gdbasm_several_nops
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comment "main routine for assembly source debugging test"
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comment "This particular testcase uses macros in <arch>.inc to achieve"
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comment "machine independence."
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.global main
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gdbasm_declare main
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gdbasm_enter
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comment "Call a macro that consists of several lines of assembler code."
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comment "mark: main start"
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gdbasm_several_nops
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comment "Call a subroutine in another file."
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comment "mark: call foo2"
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gdbasm_call foo2
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comment "All done."
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comment "mark: main exit"
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gdbasm_exit0
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gdbasm_end main
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comment "mark: search"
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comment "A routine for foo2 to call."
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.global foo3
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gdbasm_declare foo3
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gdbasm_enter
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comment "mark: foo3 start"
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gdbasm_leave
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gdbasm_end foo3
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.global exit
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gdbasm_declare exit
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gdbasm_exit0
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gdbasm_end exit
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comment "A static function"
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gdbasm_declare foostatic
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gdbasm_enter
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gdbasm_leave
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gdbasm_end foostatic
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comment "A global variable"
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.global globalvar
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gdbasm_datavar globalvar 11
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comment "A static variable"
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gdbasm_datavar staticvar 5
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.include "note.inc"
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