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# 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
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