# REQUIRES: x86 # RUN: split-file %s %t # RUN: llvm-mc -triple x86_64-pc-linux -filetype=obj %t/input.s -o %t/input.o # RUN: %lldb %t/input.o -o "command script import %t/script.py" -o exit | FileCheck %s # CHECK: Found 1 function(s). # CHECK: foo: [input.o[0x0-0xe), input.o[0x14-0x1c)] # CHECK-NEXT: input.o[0x0]: callq 0xe # CHECK-NEXT: input.o[0x5]: jmp 0x1b # CHECK-NEXT: input.o[0x7]: cmpl $0x0, %edi # CHECK-NEXT: input.o[0xa]: je 0x14 # CHECK-NEXT: input.o[0xc]: jmp 0x0 # CHECK-EMPTY: # CHECK-NEXT: input.o[0x14]: callq 0x19 # CHECK-NEXT: input.o[0x19]: jmp 0x1b # CHECK-NEXT: input.o[0x1b]: retq ## Testing the GetRangeIndexForBlockAddress API. "ffffffff" indicates that ## the address does not belong to any range. # CHECK-NEXT: offset 0x00 => index 0 # CHECK-NEXT: offset 0x0c => index 0 # CHECK-NEXT: offset 0x0e => index ffffffff # CHECK-NEXT: offset 0x13 => index ffffffff # CHECK-NEXT: offset 0x14 => index 1 # CHECK-NEXT: offset 0x1b => index 1 # CHECK-NEXT: offset 0x1c => index ffffffff #--- script.py import lldb def __lldb_init_module(debugger, internal_dict): target = debugger.GetSelectedTarget() sym_ctxs = target.FindFunctions("foo") print(f"Found {len(sym_ctxs)} function(s).") for ctx in sym_ctxs: fn = ctx.function print(f"{fn.name}: {fn.GetRanges()}") print(fn.GetInstructions(target)) text = fn.addr.section for offset in [0x00, 0x0c, 0x0e, 0x13, 0x14, 0x1b, 0x1c]: idx = fn.block.GetRangeIndexForBlockAddress(lldb.SBAddress(text, offset)) print(f"offset 0x{offset:02x} => index {idx:x}") #--- input.s # An example of a function which has been split into two parts. Roughly # corresponds to this C code. # int baz(); # int bar() { return 47; } # int foo(int flag) { return flag ? bar() : baz(); } # The function bar has been placed "in the middle" of foo. .text .type foo,@function foo.__part.1: .cfi_startproc callq bar jmp foo.__part.3 .Lfoo.__part.1_end: .size foo.__part.1, .Lfoo.__part.1_end-foo.__part.1 .cfi_endproc foo: .cfi_startproc cmpl $0, %edi je foo.__part.2 jmp foo.__part.1 .cfi_endproc .Lfoo_end: .size foo, .Lfoo_end-foo bar: .cfi_startproc movl $47, %eax retq .cfi_endproc .Lbar_end: .size bar, .Lbar_end-bar foo.__part.2: .cfi_startproc callq baz jmp foo.__part.3 .Lfoo.__part.2_end: .size foo.__part.2, .Lfoo.__part.2_end-foo.__part.2 .cfi_endproc foo.__part.3: .cfi_startproc retq .Lfoo.__part.3_end: .size foo.__part.3, .Lfoo.__part.3_end-foo.__part.3 .cfi_endproc .section .debug_abbrev,"",@progbits .byte 1 # Abbreviation Code .byte 17 # DW_TAG_compile_unit .byte 1 # DW_CHILDREN_yes .byte 37 # DW_AT_producer .byte 8 # DW_FORM_string .byte 19 # DW_AT_language .byte 5 # DW_FORM_data2 .byte 17 # DW_AT_low_pc .byte 1 # DW_FORM_addr .byte 85 # DW_AT_ranges .byte 35 # DW_FORM_rnglistx .byte 116 # DW_AT_rnglists_base .byte 23 # DW_FORM_sec_offset .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 2 # Abbreviation Code .byte 46 # DW_TAG_subprogram .byte 0 # DW_CHILDREN_no .byte 17 # DW_AT_low_pc .byte 1 # DW_FORM_addr .byte 18 # DW_AT_high_pc .byte 1 # DW_FORM_addr .byte 3 # DW_AT_name .byte 8 # DW_FORM_string .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 3 # Abbreviation Code .byte 46 # DW_TAG_subprogram .byte 0 # DW_CHILDREN_no .byte 85 # DW_AT_ranges .byte 35 # DW_FORM_rnglistx .byte 64 # DW_AT_frame_base .byte 24 # DW_FORM_exprloc .byte 3 # DW_AT_name .byte 8 # DW_FORM_string .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 0 # EOM(3) .section .debug_info,"",@progbits .Lcu_begin0: .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit .Ldebug_info_start0: .short 5 # DWARF version number .byte 1 # DWARF Unit Type .byte 8 # Address Size (in bytes) .long .debug_abbrev # Offset Into Abbrev. Section .byte 1 # Abbrev [1] DW_TAG_compile_unit .asciz "Hand-written DWARF" # DW_AT_producer .short 29 # DW_AT_language .quad 0 # DW_AT_low_pc .byte 1 # DW_AT_ranges .long .Lrnglists_table_base0 # DW_AT_rnglists_base .byte 2 # Abbrev [2] DW_TAG_subprogram .quad bar # DW_AT_low_pc .quad .Lbar_end # DW_AT_high_pc .asciz "bar" # DW_AT_name .byte 3 # Abbrev [3] DW_TAG_subprogram .byte 0 # DW_AT_ranges .byte 1 # DW_AT_frame_base .byte 86 .asciz "foo" # DW_AT_name .byte 0 # End Of Children Mark .Ldebug_info_end0: .section .debug_rnglists,"",@progbits .long .Ldebug_list_header_end0-.Ldebug_list_header_start0 # Length .Ldebug_list_header_start0: .short 5 # Version .byte 8 # Address size .byte 0 # Segment selector size .long 2 # Offset entry count .Lrnglists_table_base0: .long .Ldebug_ranges0-.Lrnglists_table_base0 .long .Ldebug_ranges1-.Lrnglists_table_base0 .Ldebug_ranges0: .byte 6 # DW_RLE_start_end .quad foo .quad .Lfoo_end .byte 6 # DW_RLE_start_end .quad foo.__part.1 .quad .Lfoo.__part.1_end .byte 6 # DW_RLE_start_end .quad foo.__part.2 .quad .Lfoo.__part.2_end .byte 6 # DW_RLE_start_end .quad foo.__part.3 .quad .Lfoo.__part.3_end .byte 0 # DW_RLE_end_of_list .Ldebug_ranges1: .byte 6 # DW_RLE_start_end .quad bar .quad .Lbar_end .byte 6 # DW_RLE_start_end .quad foo.__part.1 .quad .Lfoo.__part.1_end .byte 6 # DW_RLE_start_end .quad foo.__part.2 .quad .Lfoo.__part.2_end .byte 6 # DW_RLE_start_end .quad foo.__part.3 .quad .Lfoo.__part.3_end .byte 6 # DW_RLE_start_end .quad foo .quad .Lfoo_end .byte 0 # DW_RLE_end_of_list .Ldebug_list_header_end0: .section ".note.GNU-stack","",@progbits