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[llvm-objdump] Display locations of variables alongside disassembly

Browse Source 
This adds the --debug-vars option to llvm-objdump, which prints
locations (registers/memory) of source-level variables alongside the
disassembly based on DWARF info. A vertical line is printed for each
live-range, with a label at the top giving the variable name and
location, and the position and length of the line indicating the program
counter range in which it is valid.

Differential revision: https://reviews.llvm.org/D70720
This commit is contained in:
Oliver Stannard 2020-03-17 14:21:42 +00:00
parent b25e36f0e1
commit e53ceb3dc0
12 changed files with 2772 additions and 66 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
docs/CommandGuide/llvm-objdump.rst
View File

@ -123,6 +123,17 @@ OPTIONS
Demangle symbol names in the output.
.. option:: --debug-vars=<format>
Print the locations (in registers or memory) of source-level variables
alongside disassembly. ``format`` may be ``unicode`` or ``ascii``, defaulting
to ``unicode`` if omitted.
.. option:: --debug-vars-indent=<width>
Distance to indent the source-level variable display, relative to the start
of the disassembly. Defaults to 40 characters.
.. option:: -j, --section=<section1[,section2,...]>
Perform commands on the specified sections only. For Mach-O use

6
include/llvm/DebugInfo/DWARF/DWARFExpression.h
View File

@ -142,6 +142,12 @@ public:
void print(raw_ostream &OS, const MCRegisterInfo *RegInfo, DWARFUnit *U,
bool IsEH = false) const;
/// Print the expression in a format intended to be compact and useful to a
/// user, but not perfectly unambiguous, or capable of representing every
/// valid DWARF expression. Returns true if the expression was sucessfully
/// printed.
bool printCompact(raw_ostream &OS, const MCRegisterInfo &RegInfo);
bool verify(DWARFUnit *U);
private:

70
lib/DebugInfo/DWARF/DWARFExpression.cpp
View File

@ -374,4 +374,74 @@ bool DWARFExpression::verify(DWARFUnit *U) {
return true;
}
/// A user-facing string representation of a DWARF expression. This might be an
/// Address expression, in which case it will be implicitly dereferenced, or a
/// Value expression.
struct PrintedExpr {
enum ExprKind {
Address,
Value,
};
ExprKind Kind;
SmallString<16> String;
PrintedExpr(ExprKind K = Address) : Kind(K) {}
};
static bool printCompactDWARFExpr(raw_ostream &OS, DWARFExpression::iterator I,
const DWARFExpression::iterator E,
const MCRegisterInfo &MRI) {
SmallVector<PrintedExpr, 4> Stack;
while (I != E) {
DWARFExpression::Operation &Op = *I;
uint8_t Opcode = Op.getCode();
switch (Opcode) {
case dwarf::DW_OP_regx: {
// DW_OP_regx: A register, with the register num given as an operand.
// Printed as the plain register name.
uint64_t DwarfRegNum = Op.getRawOperand(0);
Optional<unsigned> LLVMRegNum = MRI.getLLVMRegNum(DwarfRegNum, false);
if (!LLVMRegNum) {
OS << "<unknown register " << DwarfRegNum << ">";
return false;
}
raw_svector_ostream S(Stack.emplace_back(PrintedExpr::Value).String);
S << MRI.getName(*LLVMRegNum);
break;
}
default:
if (Opcode >= dwarf::DW_OP_reg0 && Opcode <= dwarf::DW_OP_reg31) {
// DW_OP_reg<N>: A register, with the register num implied by the
// opcode. Printed as the plain register name.
uint64_t DwarfRegNum = Opcode - dwarf::DW_OP_reg0;
Optional<unsigned> LLVMRegNum = MRI.getLLVMRegNum(DwarfRegNum, false);
if (!LLVMRegNum) {
OS << "<unknown register " << DwarfRegNum << ">";
return false;
}
raw_svector_ostream S(Stack.emplace_back(PrintedExpr::Value).String);
S << MRI.getName(*LLVMRegNum);
} else {
// If we hit an unknown operand, we don't know its effect on the stack,
// so bail out on the whole expression.
OS << "<unknown op " << dwarf::OperationEncodingString(Opcode) << " ("
<< (int)Opcode << ")>";
return false;
}
break;
}
++I;
}
assert(Stack.size() == 1 && "expected one value on stack");
OS << Stack.front().String;
return true;
}
bool DWARFExpression::printCompact(raw_ostream &OS, const MCRegisterInfo &MRI) {
return printCompactDWARFExpr(OS, begin(), end(), MRI);
}
} // namespace llvm

10
test/tools/llvm-objdump/ARM/Inputs/debug.c Normal file
View File

@ -0,0 +1,10 @@
int foo(int a, int b, int c) {
int x = a + b;
int y = x + c;
return y;
}
int bar(int a) {
a++;
return a;
}

3
test/tools/llvm-objdump/ARM/Inputs/wide-char.c Normal file
View File

@ -0,0 +1,3 @@
int foo(int *喵) {
return *喵;
}

351
test/tools/llvm-objdump/ARM/debug-vars-dwarf4-sections.s Normal file
View File

@ -0,0 +1,351 @@
## Check that the --debug-vars option works for simple register locations, when
## using DWARF4 debug info, with functions in multiple sections.
## Generated with this compile command, with the source code in Inputs/debug.c:
## clang --target=arm--none-eabi -march=armv7-a -c debug.c -O1 -gdwarf-4 -S -o - -ffunction-sections
# RUN: llvm-mc -triple armv8a--none-eabi < %s -filetype=obj | \
# RUN: llvm-objdump - -d --debug-vars --no-show-raw-insn | \
# RUN: FileCheck %s
# CHECK: Disassembly of section .text.foo:
# CHECK-EMPTY:
# CHECK-NEXT: 00000000 <foo>:
# CHECK-NEXT: ┠─ a = R0
# CHECK-NEXT: ┃ ┠─ b = R1
# CHECK-NEXT: ┃ ┃ ┠─ c = R2
# CHECK-NEXT: ┃ ┃ ┃ ┌─ x = R0
# CHECK-NEXT: 0: add r0, r1, r0 ┻ ┃ ┃ ╈
# CHECK-NEXT: ┌─ y = R0
# CHECK-NEXT: 4: add r0, r0, r2 ╈ ┃ ┃ ┻
# CHECK-NEXT: 8: bx lr ┻ ┻ ┻
# CHECK-EMPTY:
# CHECK-NEXT: Disassembly of section .text.bar:
# CHECK-EMPTY:
# CHECK-NEXT: 00000000 <bar>:
# CHECK-NEXT: ┠─ a = R0
# CHECK-NEXT: 0: add r0, r0, #1 ┃
# CHECK-NEXT: 4: bx lr ┻
.text
.syntax unified
.eabi_attribute 67, "2.09"
.eabi_attribute 6, 10
.eabi_attribute 7, 65
.eabi_attribute 8, 1
.eabi_attribute 9, 2
.fpu neon
.eabi_attribute 34, 0
.eabi_attribute 17, 1
.eabi_attribute 20, 1
.eabi_attribute 21, 1
.eabi_attribute 23, 3
.eabi_attribute 24, 1
.eabi_attribute 25, 1
.eabi_attribute 38, 1
.eabi_attribute 18, 4
.eabi_attribute 26, 2
.eabi_attribute 14, 0
.file "debug.c"
.section .text.foo,"ax",%progbits
.globl foo
.p2align 2
.type foo,%function
.code 32
foo:
.Lfunc_begin0:
.file 1 "/work" "llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c"
.loc 1 1 0
.fnstart
.cfi_sections .debug_frame
.cfi_startproc
.loc 1 2 13 prologue_end
add r0, r1, r0
.Ltmp0:
.loc 1 3 13
add r0, r0, r2
.Ltmp1:
.loc 1 4 3
bx lr
.Ltmp2:
.Lfunc_end0:
.size foo, .Lfunc_end0-foo
.cfi_endproc
.cantunwind
.fnend
.section .text.bar,"ax",%progbits
.globl bar
.p2align 2
.type bar,%function
.code 32
bar:
.Lfunc_begin1:
.loc 1 7 0
.fnstart
.cfi_startproc
.loc 1 8 4 prologue_end
add r0, r0, #1
.Ltmp3:
.loc 1 9 3
bx lr
.Ltmp4:
.Lfunc_end1:
.size bar, .Lfunc_end1-bar
.cfi_endproc
.cantunwind
.fnend
.section .debug_str,"MS",%progbits,1
.Linfo_string0:
.asciz "clang version 10.0.0 (git@github.com:llvm/llvm-project.git e73f78acd34360f7450b81167d9dc858ccddc262)"
.Linfo_string1:
.asciz "/work/llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c"
.Linfo_string2:
.asciz "/work/scratch"
.Linfo_string3:
.asciz "foo"
.Linfo_string4:
.asciz "int"
.Linfo_string5:
.asciz "bar"
.Linfo_string6:
.asciz "a"
.Linfo_string7:
.asciz "b"
.Linfo_string8:
.asciz "c"
.Linfo_string9:
.asciz "x"
.Linfo_string10:
.asciz "y"
.section .debug_loc,"",%progbits
.Ldebug_loc0:
.long -1
.long .Lfunc_begin0
.long .Lfunc_begin0-.Lfunc_begin0
.long .Ltmp0-.Lfunc_begin0
.short 1
.byte 80
.long 0
.long 0
.Ldebug_loc1:
.long -1
.long .Lfunc_begin0
.long .Ltmp0-.Lfunc_begin0
.long .Ltmp1-.Lfunc_begin0
.short 1
.byte 80
.long 0
.long 0
.Ldebug_loc2:
.long -1
.long .Lfunc_begin0
.long .Ltmp1-.Lfunc_begin0
.long .Lfunc_end0-.Lfunc_begin0
.short 1
.byte 80
.long 0
.long 0
.section .debug_abbrev,"",%progbits
.byte 1
.byte 17
.byte 1
.byte 37
.byte 14
.byte 19
.byte 5
.byte 3
.byte 14
.byte 16
.byte 23
.byte 27
.byte 14
.byte 17
.byte 1
.byte 85
.byte 23
.byte 0
.byte 0
.byte 2
.byte 46
.byte 1
.byte 17
.byte 1
.byte 18
.byte 6
.byte 64
.byte 24
.ascii "\227B"
.byte 25
.byte 3
.byte 14
.byte 58
.byte 11
.byte 59
.byte 11
.byte 39
.byte 25
.byte 73
.byte 19
.byte 63
.byte 25
.byte 0
.byte 0
.byte 3
.byte 5
.byte 0
.byte 2
.byte 23
.byte 3
.byte 14
.byte 58
.byte 11
.byte 59
.byte 11
.byte 73
.byte 19
.byte 0
.byte 0
.byte 4
.byte 5
.byte 0
.byte 2
.byte 24
.byte 3
.byte 14
.byte 58
.byte 11
.byte 59
.byte 11
.byte 73
.byte 19
.byte 0
.byte 0
.byte 5
.byte 52
.byte 0
.byte 2
.byte 23
.byte 3
.byte 14
.byte 58
.byte 11
.byte 59
.byte 11
.byte 73
.byte 19
.byte 0
.byte 0
.byte 6
.byte 36
.byte 0
.byte 3
.byte 14
.byte 62
.byte 11
.byte 11
.byte 11
.byte 0
.byte 0
.byte 0
.section .debug_info,"",%progbits
.Lcu_begin0:
.long .Ldebug_info_end0-.Ldebug_info_start0
.Ldebug_info_start0:
.short 4
.long .debug_abbrev
.byte 4
.byte 1
.long .Linfo_string0
.short 12
.long .Linfo_string1
.long .Lline_table_start0
.long .Linfo_string2
.long 0
.long .Ldebug_ranges0
.byte 2
.long .Lfunc_begin0
.long .Lfunc_end0-.Lfunc_begin0
.byte 1
.byte 91
.long .Linfo_string3
.byte 1
.byte 1
.long 166
.byte 3
.long .Ldebug_loc0
.long .Linfo_string6
.byte 1
.byte 1
.long 166
.byte 4
.byte 1
.byte 81
.long .Linfo_string7
.byte 1
.byte 1
.long 166
.byte 4
.byte 1
.byte 82
.long .Linfo_string8
.byte 1
.byte 1
.long 166
.byte 5
.long .Ldebug_loc1
.long .Linfo_string9
.byte 1
.byte 2
.long 166
.byte 5
.long .Ldebug_loc2
.long .Linfo_string10
.byte 1
.byte 3
.long 166
.byte 0
.byte 2
.long .Lfunc_begin1
.long .Lfunc_end1-.Lfunc_begin1
.byte 1
.byte 91
.long .Linfo_string5
.byte 1
.byte 7
.long 166
.byte 4
.byte 1
.byte 80
.long .Linfo_string6
.byte 1
.byte 7
.long 166
.byte 0
.byte 6
.long .Linfo_string4
.byte 5
.byte 4
.byte 0
.Ldebug_info_end0:
.section .debug_ranges,"",%progbits
.Ldebug_ranges0:
.long .Lfunc_begin0
.long .Lfunc_end0
.long .Lfunc_begin1
.long .Lfunc_end1
.long 0
.long 0
.ident "clang version 10.0.0 (git@github.com:llvm/llvm-project.git e73f78acd34360f7450b81167d9dc858ccddc262)"
.section ".note.GNU-stack","",%progbits
.addrsig
.eabi_attribute 30, 1
.section .debug_line,"",%progbits
.Lline_table_start0:

454
test/tools/llvm-objdump/ARM/debug-vars-dwarf4.s Normal file
View File

@ -0,0 +1,454 @@
## Check that the --debug-vars option works for simple register locations, when
## using DWARF4 debug info, with multiple functions in one section. Check that
## the live-range lines are rendered correctly when using the --no-show-raw-insn,
## --line-numbers and --source options. These do not affect the DWARF parsing
## used by --debug-vars, but do add extra lines or columns to the output, so we
## test to make sure the live ranges are still displayed correctly.
## Generated with this compile command, with the source code in Inputs/debug.c:
## clang --target=arm--none-eabi -march=armv7-a -c debug.c -O1 -gdwarf-4 -S -o -
# RUN: llvm-mc -triple armv8a--none-eabi < %s -filetype=obj | \
# RUN: llvm-objdump - -d --debug-vars | \
# RUN: FileCheck %s --check-prefix=RAW --strict-whitespace
## Check that passing the default value for --debug-vars-indent (40) makes no
## change to the output.
# RUN: llvm-mc -triple armv8a--none-eabi < %s -filetype=obj | \
# RUN: llvm-objdump - -d --debug-vars --debug-vars-indent=40 | \
# RUN: FileCheck %s --check-prefix=RAW --strict-whitespace
# RUN: llvm-mc -triple armv8a--none-eabi < %s -filetype=obj | \
# RUN: llvm-objdump - -d --debug-vars --debug-vars-indent=30 | \
# RUN: FileCheck %s --check-prefix=INDENT --strict-whitespace
# RUN: llvm-mc -triple armv8a--none-eabi < %s -filetype=obj | \
# RUN: llvm-objdump - -d --debug-vars --no-show-raw-insn | \
# RUN: FileCheck %s --check-prefix=NO-RAW --strict-whitespace
# RUN: llvm-mc -triple armv8a--none-eabi < %s -filetype=obj | \
# RUN: llvm-objdump - -d --debug-vars --no-show-raw-insn --line-numbers | \
# RUN: FileCheck %s --check-prefix=LINE-NUMS --strict-whitespace
# RUN: mkdir -p %t/a
# RUN: cp %p/Inputs/debug.c %t/a/debug.c
# RUN: sed -e "s,SRC_COMPDIR,%/t/a,g" %s > %t.s
# RUN: llvm-mc -triple armv8a--none-eabi < %t.s -filetype=obj | \
# RUN: llvm-objdump - -d --debug-vars --no-show-raw-insn --source | \
# RUN: FileCheck %s --check-prefix=SOURCE --strict-whitespace
## An optional argument to the --debug-vars= option can be used to switch
## between unicode and ascii output (with unicode being the default).
# RUN: llvm-mc -triple armv8a--none-eabi < %s -filetype=obj | \
# RUN: llvm-objdump - -d --debug-vars=unicode | \
# RUN: FileCheck %s --check-prefix=RAW --strict-whitespace
# RUN: llvm-mc -triple armv8a--none-eabi < %s -filetype=obj | \
# RUN: llvm-objdump - -d --debug-vars=ascii | \
# RUN: FileCheck %s --check-prefix=ASCII --strict-whitespace
## Note that llvm-objdump emits tab characters in the disassembly, assuming an
## 8-byte tab stop, so these might not look aligned in a text editor.
# RAW: 00000000 <foo>:
# RAW-NEXT: ┠─ a = R0
# RAW-NEXT: ┃ ┠─ b = R1
# RAW-NEXT: ┃ ┃ ┠─ c = R2
# RAW-NEXT: ┃ ┃ ┃ ┌─ x = R0
# RAW-NEXT: 0: 00 00 81 e0 add r0, r1, r0 ┻ ┃ ┃ ╈
# RAW-NEXT: ┌─ y = R0
# RAW-NEXT: 4: 02 00 80 e0 add r0, r0, r2 ╈ ┃ ┃ ┻
# RAW-NEXT: 8: 1e ff 2f e1 bx lr ┻ ┻ ┻
# RAW-EMPTY:
# RAW-NEXT: 0000000c <bar>:
# RAW-NEXT: ┠─ a = R0
# RAW-NEXT: c: 01 00 80 e2 add r0, r0, #1 ┃
# RAW-NEXT: 10: 1e ff 2f e1 bx lr ┻
# INDENT: 00000000 <foo>:
# INDENT-NEXT: ┠─ a = R0
# INDENT-NEXT: ┃ ┠─ b = R1
# INDENT-NEXT: ┃ ┃ ┠─ c = R2
# INDENT-NEXT: ┃ ┃ ┃ ┌─ x = R0
# INDENT-NEXT: 0: 00 00 81 e0 add r0, r1, r0 ┻ ┃ ┃ ╈
# INDENT-NEXT: ┌─ y = R0
# INDENT-NEXT: 4: 02 00 80 e0 add r0, r0, r2 ╈ ┃ ┃ ┻
# INDENT-NEXT: 8: 1e ff 2f e1 bx lr ┻ ┻ ┻
# INDENT-EMPTY:
# INDENT-NEXT: 0000000c <bar>:
# INDENT-NEXT: ┠─ a = R0
# INDENT-NEXT: c: 01 00 80 e2 add r0, r0, #1 ┃
# INDENT-NEXT: 10: 1e ff 2f e1 bx lr ┻
# NO-RAW: 00000000 <foo>:
# NO-RAW-NEXT: ┠─ a = R0
# NO-RAW-NEXT: ┃ ┠─ b = R1
# NO-RAW-NEXT: ┃ ┃ ┠─ c = R2
# NO-RAW-NEXT: ┃ ┃ ┃ ┌─ x = R0
# NO-RAW-NEXT: 0: add r0, r1, r0 ┻ ┃ ┃ ╈
# NO-RAW-NEXT: ┌─ y = R0
# NO-RAW-NEXT: 4: add r0, r0, r2 ╈ ┃ ┃ ┻
# NO-RAW-NEXT: 8: bx lr ┻ ┻ ┻
# NO-RAW-EMPTY:
# NO-RAW-NEXT: 0000000c <bar>:
# NO-RAW-NEXT: ┠─ a = R0
# NO-RAW-NEXT: c: add r0, r0, #1 ┃
# NO-RAW-NEXT: 10: bx lr ┻
# LINE-NUMS: 00000000 <foo>:
# LINE-NUMS-NEXT: ; foo():
# LINE-NUMS-NEXT: ; SRC_COMPDIR{{[\\/]}}debug.c:2 ┠─ a = R0
# LINE-NUMS-NEXT: ┃ ┠─ b = R1
# LINE-NUMS-NEXT: ┃ ┃ ┠─ c = R2
# LINE-NUMS-NEXT: ┃ ┃ ┃ ┌─ x = R0
# LINE-NUMS-NEXT: 0: add r0, r1, r0 ┻ ┃ ┃ ╈
# LINE-NUMS-NEXT: ; SRC_COMPDIR{{[\\/]}}debug.c:3 ┌─ y = R0
# LINE-NUMS-NEXT: 4: add r0, r0, r2 ╈ ┃ ┃ ┻
# LINE-NUMS-NEXT: ; SRC_COMPDIR{{[\\/]}}debug.c:4 ┃ ┃ ┃
# LINE-NUMS-NEXT: 8: bx lr ┻ ┻ ┻
# LINE-NUMS-EMPTY:
# LINE-NUMS-NEXT: 0000000c <bar>:
# LINE-NUMS-NEXT: ; bar():
# LINE-NUMS-NEXT: ; SRC_COMPDIR{{[\\/]}}debug.c:8 ┠─ a = R0
# LINE-NUMS-NEXT: c: add r0, r0, #1 ┃
# LINE-NUMS-NEXT: ; SRC_COMPDIR{{[\\/]}}debug.c:9 ┃
# LINE-NUMS-NEXT: 10: bx lr ┻
# SOURCE: 00000000 <foo>:
# SOURCE-NEXT: ; int x = a + b; ┠─ a = R0
# SOURCE-NEXT: ┃ ┠─ b = R1
# SOURCE-NEXT: ┃ ┃ ┠─ c = R2
# SOURCE-NEXT: ┃ ┃ ┃ ┌─ x = R0
# SOURCE-NEXT: 0: add r0, r1, r0 ┻ ┃ ┃ ╈
# SOURCE-NEXT: ; int y = x + c; ┌─ y = R0
# SOURCE-NEXT: 4: add r0, r0, r2 ╈ ┃ ┃ ┻
# SOURCE-NEXT: ; return y; ┃ ┃ ┃
# SOURCE-NEXT: 8: bx lr ┻ ┻ ┻
# SOURCE-EMPTY:
# SOURCE-NEXT: 0000000c <bar>:
# SOURCE-NEXT: ; a++; ┠─ a = R0
# SOURCE-NEXT: c: add r0, r0, #1 ┃
# SOURCE-NEXT: ; return a; ┃
# SOURCE-NEXT: 10: bx lr ┻
# ASCII: 00000000 <foo>:
# ASCII-NEXT: |- a = R0
# ASCII-NEXT: | |- b = R1
# ASCII-NEXT: | | |- c = R2
# ASCII-NEXT: | | | /- x = R0
# ASCII-NEXT: 0: 00 00 81 e0 add r0, r1, r0 v | | ^
# ASCII-NEXT: /- y = R0
# ASCII-NEXT: 4: 02 00 80 e0 add r0, r0, r2 ^ | | v
# ASCII-NEXT: 8: 1e ff 2f e1 bx lr v v v
# ASCII-EMPTY:
# ASCII-NEXT: 0000000c <bar>:
# ASCII-NEXT: |- a = R0
# ASCII-NEXT: c: 01 00 80 e2 add r0, r0, #1 |
# ASCII-NEXT: 10: 1e ff 2f e1 bx lr v
.text
.syntax unified
.eabi_attribute 67, "2.09"
.eabi_attribute 6, 10
.eabi_attribute 7, 65
.eabi_attribute 8, 1
.eabi_attribute 9, 2
.fpu neon
.eabi_attribute 34, 0
.eabi_attribute 17, 1
.eabi_attribute 20, 1
.eabi_attribute 21, 1
.eabi_attribute 23, 3
.eabi_attribute 24, 1
.eabi_attribute 25, 1
.eabi_attribute 38, 1
.eabi_attribute 18, 4
.eabi_attribute 26, 2
.eabi_attribute 14, 0
.file "debug.c"
.globl foo
.p2align 2
.type foo,%function
.code 32
foo:
.Lfunc_begin0:
.file 1 "" "SRC_COMPDIR/debug.c"
.loc 1 1 0
.fnstart
.cfi_sections .debug_frame
.cfi_startproc
.loc 1 2 13 prologue_end
add r0, r1, r0
.Ltmp0:
.loc 1 3 13
add r0, r0, r2
.Ltmp1:
.loc 1 4 3
bx lr
.Ltmp2:
.Lfunc_end0:
.size foo, .Lfunc_end0-foo
.cfi_endproc
.cantunwind
.fnend
.globl bar
.p2align 2
.type bar,%function
.code 32
bar:
.Lfunc_begin1:
.loc 1 7 0
.fnstart
.cfi_startproc
.loc 1 8 4 prologue_end
add r0, r0, #1
.Ltmp3:
.loc 1 9 3
bx lr
.Ltmp4:
.Lfunc_end1:
.size bar, .Lfunc_end1-bar
.cfi_endproc
.cantunwind
.fnend
.section .debug_str,"MS",%progbits,1
.Linfo_string0:
.asciz "clang version 10.0.0 (git@github.com:llvm/llvm-project.git e73f78acd34360f7450b81167d9dc858ccddc262)"
.Linfo_string1:
.asciz "SRC_COMPDIR/debug.c"
.Linfo_string2:
.asciz ""
.Linfo_string3:
.asciz "foo"
.Linfo_string4:
.asciz "int"
.Linfo_string5:
.asciz "bar"
.Linfo_string6:
.asciz "a"
.Linfo_string7:
.asciz "b"
.Linfo_string8:
.asciz "c"
.Linfo_string9:
.asciz "x"
.Linfo_string10:
.asciz "y"
.section .debug_loc,"",%progbits
.Ldebug_loc0:
.long .Lfunc_begin0-.Lfunc_begin0
.long .Ltmp0-.Lfunc_begin0
.short 1
.byte 80
.long 0
.long 0
.Ldebug_loc1:
.long .Ltmp0-.Lfunc_begin0
.long .Ltmp1-.Lfunc_begin0
.short 1
.byte 80
.long 0
.long 0
.Ldebug_loc2:
.long .Ltmp1-.Lfunc_begin0
.long .Lfunc_end0-.Lfunc_begin0
.short 1
.byte 80
.long 0
.long 0
.section .debug_abbrev,"",%progbits
.byte 1
.byte 17
.byte 1
.byte 37
.byte 14
.byte 19
.byte 5
.byte 3
.byte 14
.byte 16
.byte 23
.byte 27
.byte 14
.byte 17
.byte 1
.byte 18
.byte 6
.byte 0
.byte 0
.byte 2
.byte 46
.byte 1
.byte 17
.byte 1
.byte 18
.byte 6
.byte 64
.byte 24
.ascii "\227B"
.byte 25
.byte 3
.byte 14
.byte 58
.byte 11
.byte 59
.byte 11
.byte 39
.byte 25
.byte 73
.byte 19
.byte 63
.byte 25
.byte 0
.byte 0
.byte 3
.byte 5
.byte 0
.byte 2
.byte 23
.byte 3
.byte 14
.byte 58
.byte 11
.byte 59
.byte 11
.byte 73
.byte 19
.byte 0
.byte 0
.byte 4
.byte 5
.byte 0
.byte 2
.byte 24
.byte 3
.byte 14
.byte 58
.byte 11
.byte 59
.byte 11
.byte 73
.byte 19
.byte 0
.byte 0
.byte 5
.byte 52
.byte 0
.byte 2
.byte 23
.byte 3
.byte 14
.byte 58
.byte 11
.byte 59
.byte 11
.byte 73
.byte 19
.byte 0
.byte 0
.byte 6
.byte 36
.byte 0
.byte 3
.byte 14
.byte 62
.byte 11
.byte 11
.byte 11
.byte 0
.byte 0
.byte 0
.section .debug_info,"",%progbits
.Lcu_begin0:
.long .Ldebug_info_end0-.Ldebug_info_start0
.Ldebug_info_start0:
.short 4
.long .debug_abbrev
.byte 4
.byte 1
.long .Linfo_string0
.short 12
.long .Linfo_string1
.long .Lline_table_start0
.long .Linfo_string2
.long .Lfunc_begin0
.long .Lfunc_end1-.Lfunc_begin0
.byte 2
.long .Lfunc_begin0
.long .Lfunc_end0-.Lfunc_begin0
.byte 1
.byte 91
.long .Linfo_string3
.byte 1
.byte 1
.long 166
.byte 3
.long .Ldebug_loc0
.long .Linfo_string6
.byte 1
.byte 1
.long 166
.byte 4
.byte 1
.byte 81
.long .Linfo_string7
.byte 1
.byte 1
.long 166
.byte 4
.byte 1
.byte 82
.long .Linfo_string8
.byte 1
.byte 1
.long 166
.byte 5
.long .Ldebug_loc1
.long .Linfo_string9
.byte 1
.byte 2
.long 166
.byte 5
.long .Ldebug_loc2
.long .Linfo_string10
.byte 1
.byte 3
.long 166
.byte 0
.byte 2
.long .Lfunc_begin1
.long .Lfunc_end1-.Lfunc_begin1
.byte 1
.byte 91
.long .Linfo_string5
.byte 1
.byte 7
.long 166
.byte 4
.byte 1
.byte 80
.long .Linfo_string6
.byte 1
.byte 7
.long 166
.byte 0
.byte 6
.long .Linfo_string4
.byte 5
.byte 4
.byte 0
.Ldebug_info_end0:
.ident "clang version 10.0.0 (git@github.com:llvm/llvm-project.git e73f78acd34360f7450b81167d9dc858ccddc262)"
.section ".note.GNU-stack","",%progbits
.addrsig
.eabi_attribute 30, 1
.section .debug_line,"",%progbits
.Lline_table_start0:

411
test/tools/llvm-objdump/ARM/debug-vars-dwarf5-sections.s Normal file
View File

@ -0,0 +1,411 @@
## Check that the --debug-vars option works for simple register locations, when
## using DWARF4 debug info, with functions in multiple sections.
## Generated with this compile command, with the source code in Inputs/debug.c:
## clang --target=arm--none-eabi -march=armv7-a -c debug.c -O1 -gdwarf-5 -S -o - -ffunction-sections
# RUN: llvm-mc -triple armv8a--none-eabi < %s -filetype=obj --dwarf-version=5 | \
# RUN: llvm-objdump - -d --debug-vars --no-show-raw-insn | \
# RUN: FileCheck %s
# CHECK: Disassembly of section .text.foo:
# CHECK-EMPTY:
# CHECK-NEXT: 00000000 <foo>:
# CHECK-NEXT: ┠─ a = R0
# CHECK-NEXT: ┃ ┠─ b = R1
# CHECK-NEXT: ┃ ┃ ┠─ c = R2
# CHECK-NEXT: ┃ ┃ ┃ ┌─ x = R0
# CHECK-NEXT: 0: add r0, r1, r0 ┻ ┃ ┃ ╈
# CHECK-NEXT: ┌─ y = R0
# CHECK-NEXT: 4: add r0, r0, r2 ╈ ┃ ┃ ┻
# CHECK-NEXT: 8: bx lr ┻ ┻ ┻
# CHECK-EMPTY:
# CHECK-NEXT: Disassembly of section .text.bar:
# CHECK-EMPTY:
# CHECK-NEXT: 00000000 <bar>:
# CHECK-NEXT: ┠─ a = R0
# CHECK-NEXT: 0: add r0, r0, #1 ┃
# CHECK-NEXT: 4: bx lr ┻
.text
.syntax unified
.eabi_attribute 67, "2.09"
.eabi_attribute 6, 10
.eabi_attribute 7, 65
.eabi_attribute 8, 1
.eabi_attribute 9, 2
.fpu neon
.eabi_attribute 34, 0
.eabi_attribute 17, 1
.eabi_attribute 20, 1
.eabi_attribute 21, 1
.eabi_attribute 23, 3
.eabi_attribute 24, 1
.eabi_attribute 25, 1
.eabi_attribute 38, 1
.eabi_attribute 18, 4
.eabi_attribute 26, 2
.eabi_attribute 14, 0
.file "debug.c"
.section .text.foo,"ax",%progbits
.globl foo
.p2align 2
.type foo,%function
.code 32
foo:
.Lfunc_begin0:
.file 0 "/work/scratch" "/work/llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c" md5 0x07374f01ab24ec7c07db73bc13bd778e
.file 1 "/work" "llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c" md5 0x07374f01ab24ec7c07db73bc13bd778e
.loc 1 1 0
.fnstart
.cfi_sections .debug_frame
.cfi_startproc
.loc 1 2 13 prologue_end
add r0, r1, r0
.Ltmp0:
.loc 1 3 13
add r0, r0, r2
.Ltmp1:
.loc 1 4 3
bx lr
.Ltmp2:
.Lfunc_end0:
.size foo, .Lfunc_end0-foo
.cfi_endproc
.cantunwind
.fnend
.section .text.bar,"ax",%progbits
.globl bar
.p2align 2
.type bar,%function
.code 32
bar:
.Lfunc_begin1:
.loc 1 7 0
.fnstart
.cfi_startproc
.loc 1 8 4 prologue_end
add r0, r0, #1
.Ltmp3:
.loc 1 9 3
bx lr
.Ltmp4:
.Lfunc_end1:
.size bar, .Lfunc_end1-bar
.cfi_endproc
.cantunwind
.fnend
.section .debug_str_offsets,"",%progbits
.long 48
.short 5
.short 0
.Lstr_offsets_base0:
.section .debug_str,"MS",%progbits,1
.Linfo_string0:
.asciz "clang version 10.0.0 (git@github.com:llvm/llvm-project.git e73f78acd34360f7450b81167d9dc858ccddc262)"
.Linfo_string1:
.asciz "/work/llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c"
.Linfo_string2:
.asciz "/work/scratch"
.Linfo_string3:
.asciz "foo"
.Linfo_string4:
.asciz "int"
.Linfo_string5:
.asciz "bar"
.Linfo_string6:
.asciz "a"
.Linfo_string7:
.asciz "b"
.Linfo_string8:
.asciz "c"
.Linfo_string9:
.asciz "x"
.Linfo_string10:
.asciz "y"
.section .debug_str_offsets,"",%progbits
.long .Linfo_string0
.long .Linfo_string1
.long .Linfo_string2
.long .Linfo_string3
.long .Linfo_string4
.long .Linfo_string5
.long .Linfo_string6
.long .Linfo_string7
.long .Linfo_string8
.long .Linfo_string9
.long .Linfo_string10
.section .debug_loclists,"",%progbits
.long .Ldebug_loclist_table_end0-.Ldebug_loclist_table_start0
.Ldebug_loclist_table_start0:
.short 5
.byte 4
.byte 0
.long 3
.Lloclists_table_base0:
.long .Ldebug_loc0-.Lloclists_table_base0
.long .Ldebug_loc1-.Lloclists_table_base0
.long .Ldebug_loc2-.Lloclists_table_base0
.Ldebug_loc0:
.byte 3
.byte 0
.uleb128 .Ltmp0-.Lfunc_begin0
.byte 1
.byte 80
.byte 0
.Ldebug_loc1:
.byte 1
.byte 0
.byte 4
.uleb128 .Ltmp0-.Lfunc_begin0
.uleb128 .Ltmp1-.Lfunc_begin0
.byte 1
.byte 80
.byte 0
.Ldebug_loc2:
.byte 1
.byte 0
.byte 4
.uleb128 .Ltmp1-.Lfunc_begin0
.uleb128 .Lfunc_end0-.Lfunc_begin0
.byte 1
.byte 80
.byte 0
.Ldebug_loclist_table_end0:
.section .debug_abbrev,"",%progbits
.byte 1
.byte 17
.byte 1
.byte 37
.byte 37
.byte 19
.byte 5
.byte 3
.byte 37
.byte 114
.byte 23
.byte 16
.byte 23
.byte 27
.byte 37
.byte 17
.byte 1
.byte 85
.byte 35
.byte 115
.byte 23
.byte 116
.byte 23
.ascii "\214\001"
.byte 23
.byte 0
.byte 0
.byte 2
.byte 46
.byte 1
.byte 17
.byte 27
.byte 18
.byte 6
.byte 64
.byte 24
.byte 122
.byte 25
.byte 3
.byte 37
.byte 58
.byte 11
.byte 59
.byte 11
.byte 39
.byte 25
.byte 73
.byte 19
.byte 63
.byte 25
.byte 0
.byte 0
.byte 3
.byte 5
.byte 0
.byte 2
.byte 34
.byte 3
.byte 37
.byte 58
.byte 11
.byte 59
.byte 11
.byte 73
.byte 19
.byte 0
.byte 0
.byte 4
.byte 5
.byte 0
.byte 2
.byte 24
.byte 3
.byte 37
.byte 58
.byte 11
.byte 59
.byte 11
.byte 73
.byte 19
.byte 0
.byte 0
.byte 5
.byte 52
.byte 0
.byte 2
.byte 34
.byte 3
.byte 37
.byte 58
.byte 11
.byte 59
.byte 11
.byte 73
.byte 19
.byte 0
.byte 0
.byte 6
.byte 36
.byte 0
.byte 3
.byte 37
.byte 62
.byte 11
.byte 11
.byte 11
.byte 0
.byte 0
.byte 0
.section .debug_info,"",%progbits
.Lcu_begin0:
.long .Ldebug_info_end0-.Ldebug_info_start0
.Ldebug_info_start0:
.short 5
.byte 1
.byte 4
.long .debug_abbrev
.byte 1
.byte 0
.short 12
.byte 1
.long .Lstr_offsets_base0
.long .Lline_table_start0
.byte 2
.long 0
.byte 0
.long .Laddr_table_base0
.long .Lrnglists_table_base0
.long .Lloclists_table_base0
.byte 2
.byte 0
.long .Lfunc_end0-.Lfunc_begin0
.byte 1
.byte 91
.byte 3
.byte 1
.byte 1
.long 132
.byte 3
.byte 0
.byte 6
.byte 1
.byte 1
.long 132
.byte 4
.byte 1
.byte 81
.byte 7
.byte 1
.byte 1
.long 132
.byte 4
.byte 1
.byte 82
.byte 8
.byte 1
.byte 1
.long 132
.byte 5
.byte 1
.byte 9
.byte 1
.byte 2
.long 132
.byte 5
.byte 2
.byte 10
.byte 1
.byte 3
.long 132
.byte 0
.byte 2
.byte 1
.long .Lfunc_end1-.Lfunc_begin1
.byte 1
.byte 91
.byte 5
.byte 1
.byte 7
.long 132
.byte 4
.byte 1
.byte 80
.byte 6
.byte 1
.byte 7
.long 132
.byte 0
.byte 6
.byte 4
.byte 5
.byte 4
.byte 0
.Ldebug_info_end0:
.section .debug_rnglists,"",%progbits
.long .Ldebug_rnglist_table_end0-.Ldebug_rnglist_table_start0
.Ldebug_rnglist_table_start0:
.short 5
.byte 4
.byte 0
.long 1
.Lrnglists_table_base0:
.long .Ldebug_ranges0-.Lrnglists_table_base0
.Ldebug_ranges0:
.byte 3
.byte 0
.uleb128 .Lfunc_end0-.Lfunc_begin0
.byte 3
.byte 1
.uleb128 .Lfunc_end1-.Lfunc_begin1
.byte 0
.Ldebug_rnglist_table_end0:
.section .debug_addr,"",%progbits
.long .Ldebug_addr_end0-.Ldebug_addr_start0
.Ldebug_addr_start0:
.short 5
.byte 4
.byte 0
.Laddr_table_base0:
.long .Lfunc_begin0
.long .Lfunc_begin1
.Ldebug_addr_end0:
.ident "clang version 10.0.0 (git@github.com:llvm/llvm-project.git e73f78acd34360f7450b81167d9dc858ccddc262)"
.section ".note.GNU-stack","",%progbits
.addrsig
.eabi_attribute 30, 1
.section .debug_line,"",%progbits
.Lline_table_start0:

382
test/tools/llvm-objdump/ARM/debug-vars-dwarf5.s Normal file
View File

@ -0,0 +1,382 @@
## Check that the --debug-vars option works for simple register locations, when
## using DWARF5 debug info, with multiple functions in one section.
## Generated with this compile command, with the source code in Inputs/debug.c:
## clang --target=arm--none-eabi -march=armv7-a -c debug.c -O1 -gdwarf-3 -S -o -
# RUN: llvm-mc -triple armv8a--none-eabi < %s -filetype=obj --dwarf-version=5 | \
# RUN: llvm-objdump - -d --debug-vars --no-show-raw-insn | \
# RUN: FileCheck %s
# CHECK: Disassembly of section .text:
# CHECK-EMPTY:
# CHECK-NEXT: 00000000 <foo>:
# CHECK-NEXT: ┠─ a = R0
# CHECK-NEXT: ┃ ┠─ b = R1
# CHECK-NEXT: ┃ ┃ ┠─ c = R2
# CHECK-NEXT: ┃ ┃ ┃ ┌─ x = R0
# CHECK-NEXT: 0: add r0, r1, r0 ┻ ┃ ┃ ╈
# CHECK-NEXT: ┌─ y = R0
# CHECK-NEXT: 4: add r0, r0, r2 ╈ ┃ ┃ ┻
# CHECK-NEXT: 8: bx lr ┻ ┻ ┻
# CHECK-EMPTY:
# CHECK-NEXT: 0000000c <bar>:
# CHECK-NEXT: ┠─ a = R0
# CHECK-NEXT: c: add r0, r0, #1 ┃
# CHECK-NEXT: 10: bx lr ┻
.text
.syntax unified
.eabi_attribute 67, "2.09"
.eabi_attribute 6, 10
.eabi_attribute 7, 65
.eabi_attribute 8, 1
.eabi_attribute 9, 2
.fpu neon
.eabi_attribute 34, 0
.eabi_attribute 17, 1
.eabi_attribute 20, 1
.eabi_attribute 21, 1
.eabi_attribute 23, 3
.eabi_attribute 24, 1
.eabi_attribute 25, 1
.eabi_attribute 38, 1
.eabi_attribute 18, 4
.eabi_attribute 26, 2
.eabi_attribute 14, 0
.file "debug.c"
.globl foo
.p2align 2
.type foo,%function
.code 32
foo:
.Lfunc_begin0:
.file 0 "/work/scratch" "/work/llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c" md5 0x07374f01ab24ec7c07db73bc13bd778e
.file 1 "/work" "llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c" md5 0x07374f01ab24ec7c07db73bc13bd778e
.loc 1 1 0
.fnstart
.cfi_sections .debug_frame
.cfi_startproc
.loc 1 2 13 prologue_end
add r0, r1, r0
.Ltmp0:
.loc 1 3 13
add r0, r0, r2
.Ltmp1:
.loc 1 4 3
bx lr
.Ltmp2:
.Lfunc_end0:
.size foo, .Lfunc_end0-foo
.cfi_endproc
.cantunwind
.fnend
.globl bar
.p2align 2
.type bar,%function
.code 32
bar:
.Lfunc_begin1:
.loc 1 7 0
.fnstart
.cfi_startproc
.loc 1 8 4 prologue_end
add r0, r0, #1
.Ltmp3:
.loc 1 9 3
bx lr
.Ltmp4:
.Lfunc_end1:
.size bar, .Lfunc_end1-bar
.cfi_endproc
.cantunwind
.fnend
.section .debug_str_offsets,"",%progbits
.long 48
.short 5
.short 0
.Lstr_offsets_base0:
.section .debug_str,"MS",%progbits,1
.Linfo_string0:
.asciz "clang version 10.0.0 (git@github.com:llvm/llvm-project.git e73f78acd34360f7450b81167d9dc858ccddc262)"
.Linfo_string1:
.asciz "/work/llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c"
.Linfo_string2:
.asciz "/work/scratch"
.Linfo_string3:
.asciz "foo"
.Linfo_string4:
.asciz "int"
.Linfo_string5:
.asciz "bar"
.Linfo_string6:
.asciz "a"
.Linfo_string7:
.asciz "b"
.Linfo_string8:
.asciz "c"
.Linfo_string9:
.asciz "x"
.Linfo_string10:
.asciz "y"
.section .debug_str_offsets,"",%progbits
.long .Linfo_string0
.long .Linfo_string1
.long .Linfo_string2
.long .Linfo_string3
.long .Linfo_string4
.long .Linfo_string5
.long .Linfo_string6
.long .Linfo_string7
.long .Linfo_string8
.long .Linfo_string9
.long .Linfo_string10
.section .debug_loclists,"",%progbits
.long .Ldebug_loclist_table_end0-.Ldebug_loclist_table_start0
.Ldebug_loclist_table_start0:
.short 5
.byte 4
.byte 0
.long 3
.Lloclists_table_base0:
.long .Ldebug_loc0-.Lloclists_table_base0
.long .Ldebug_loc1-.Lloclists_table_base0
.long .Ldebug_loc2-.Lloclists_table_base0
.Ldebug_loc0:
.byte 4
.uleb128 .Lfunc_begin0-.Lfunc_begin0
.uleb128 .Ltmp0-.Lfunc_begin0
.byte 1
.byte 80
.byte 0
.Ldebug_loc1:
.byte 4
.uleb128 .Ltmp0-.Lfunc_begin0
.uleb128 .Ltmp1-.Lfunc_begin0
.byte 1
.byte 80
.byte 0
.Ldebug_loc2:
.byte 4
.uleb128 .Ltmp1-.Lfunc_begin0
.uleb128 .Lfunc_end0-.Lfunc_begin0
.byte 1
.byte 80
.byte 0
.Ldebug_loclist_table_end0:
.section .debug_abbrev,"",%progbits
.byte 1
.byte 17
.byte 1
.byte 37
.byte 37
.byte 19
.byte 5
.byte 3
.byte 37
.byte 114
.byte 23
.byte 16
.byte 23
.byte 27
.byte 37
.byte 17
.byte 27
.byte 18
.byte 6
.byte 115
.byte 23
.ascii "\214\001"
.byte 23
.byte 0
.byte 0
.byte 2
.byte 46
.byte 1
.byte 17
.byte 27
.byte 18
.byte 6
.byte 64
.byte 24
.byte 122
.byte 25
.byte 3
.byte 37
.byte 58
.byte 11
.byte 59
.byte 11
.byte 39
.byte 25
.byte 73
.byte 19
.byte 63
.byte 25
.byte 0
.byte 0
.byte 3
.byte 5
.byte 0
.byte 2
.byte 34
.byte 3
.byte 37
.byte 58
.byte 11
.byte 59
.byte 11
.byte 73
.byte 19
.byte 0
.byte 0
.byte 4
.byte 5
.byte 0
.byte 2
.byte 24
.byte 3
.byte 37
.byte 58
.byte 11
.byte 59
.byte 11
.byte 73
.byte 19
.byte 0
.byte 0
.byte 5
.byte 52
.byte 0
.byte 2
.byte 34
.byte 3
.byte 37
.byte 58
.byte 11
.byte 59
.byte 11
.byte 73
.byte 19
.byte 0
.byte 0
.byte 6
.byte 36
.byte 0
.byte 3
.byte 37
.byte 62
.byte 11
.byte 11
.byte 11
.byte 0
.byte 0
.byte 0
.section .debug_info,"",%progbits
.Lcu_begin0:
.long .Ldebug_info_end0-.Ldebug_info_start0
.Ldebug_info_start0:
.short 5
.byte 1
.byte 4
.long .debug_abbrev
.byte 1
.byte 0
.short 12
.byte 1
.long .Lstr_offsets_base0
.long .Lline_table_start0
.byte 2
.byte 0
.long .Lfunc_end1-.Lfunc_begin0
.long .Laddr_table_base0
.long .Lloclists_table_base0
.byte 2
.byte 0
.long .Lfunc_end0-.Lfunc_begin0
.byte 1
.byte 91
.byte 3
.byte 1
.byte 1
.long 128
.byte 3
.byte 0
.byte 6
.byte 1
.byte 1
.long 128
.byte 4
.byte 1
.byte 81
.byte 7
.byte 1
.byte 1
.long 128
.byte 4
.byte 1
.byte 82
.byte 8
.byte 1
.byte 1
.long 128
.byte 5
.byte 1
.byte 9
.byte 1
.byte 2
.long 128
.byte 5
.byte 2
.byte 10
.byte 1
.byte 3
.long 128
.byte 0
.byte 2
.byte 1
.long .Lfunc_end1-.Lfunc_begin1
.byte 1
.byte 91
.byte 5
.byte 1
.byte 7
.long 128
.byte 4
.byte 1
.byte 80
.byte 6
.byte 1
.byte 7
.long 128
.byte 0
.byte 6
.byte 4
.byte 5
.byte 4
.byte 0
.Ldebug_info_end0:
.section .debug_addr,"",%progbits
.long .Ldebug_addr_end0-.Ldebug_addr_start0
.Ldebug_addr_start0:
.short 5
.byte 4
.byte 0
.Laddr_table_base0:
.long .Lfunc_begin0
.long .Lfunc_begin1
.Ldebug_addr_end0:
.ident "clang version 10.0.0 (git@github.com:llvm/llvm-project.git e73f78acd34360f7450b81167d9dc858ccddc262)"
.section ".note.GNU-stack","",%progbits
.addrsig
.eabi_attribute 30, 1
.section .debug_line,"",%progbits
.Lline_table_start0:

232
test/tools/llvm-objdump/ARM/debug-vars-wide-chars.s Normal file
View File

@ -0,0 +1,232 @@
# RUN: mkdir -p %t/a
# RUN: cp %p/Inputs/wide-char.c %t/a/wide-char.c
# RUN: sed -e "s,SRC_COMPDIR,%/t/a,g" %s > %t.s
# RUN: llvm-mc -triple armv8a--none-eabi < %t.s -filetype=obj | \
# RUN: llvm-objdump - -d --debug-vars --source | \
# RUN: FileCheck %s --strict-whitespace
## The Chinese character in the source does not print correctly on Windows.
# UNSUPPORTED: system-windows
## Check that the --debug-vars option correctly aligns the variable display when
## the source code (printed by the -S option) includes East Asian wide
## characters.
# CHECK: 00000000 <foo>:
# CHECK-NEXT: ; return *喵; ┠─ 喵 = R0
# CHECK-NEXT: 0: 00 00 90 e5 ldr r0, [r0] ┻
# CHECK-NEXT: 4: 1e ff 2f e1 bx lr
.text
.syntax unified
.eabi_attribute 67, "2.09"
.eabi_attribute 6, 10
.eabi_attribute 7, 65
.eabi_attribute 8, 1
.eabi_attribute 9, 2
.fpu vfpv3
.eabi_attribute 34, 0
.eabi_attribute 17, 1
.eabi_attribute 20, 1
.eabi_attribute 21, 1
.eabi_attribute 23, 3
.eabi_attribute 24, 1
.eabi_attribute 25, 1
.eabi_attribute 38, 1
.eabi_attribute 18, 4
.eabi_attribute 26, 2
.eabi_attribute 14, 0
.file "wide.c"
.globl foo
.p2align 2
.type foo,%function
.code 32
foo:
.Lfunc_begin0:
.file 1 "SRC_COMPDIR/wide-char.c"
.loc 1 1 0
.fnstart
.cfi_sections .debug_frame
.cfi_startproc
.loc 1 2 10 prologue_end
ldr r0, [r0]
.Ltmp0:
.loc 1 2 3 is_stmt 0
bx lr
.Ltmp1:
.Lfunc_end0:
.size foo, .Lfunc_end0-foo
.cfi_endproc
.cantunwind
.fnend
.section .debug_str,"MS",%progbits,1
.Linfo_string0:
.asciz "clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)"
.Linfo_string1:
.asciz "wide-char.c"
.Linfo_string2:
.asciz "SRC_COMPDIR"
.Linfo_string3:
.asciz "foo"
.Linfo_string4:
.asciz "int"
.Linfo_string5:
.asciz "\345\226\265"
.section .debug_loc,"",%progbits
.Ldebug_loc0:
.long .Lfunc_begin0-.Lfunc_begin0
.long .Ltmp0-.Lfunc_begin0
.short 1
.byte 80
.long 0
.long 0
.section .debug_abbrev,"",%progbits
.byte 1
.byte 17
.byte 1
.byte 37
.byte 14
.byte 19
.byte 5
.byte 3
.byte 14
.byte 16
.byte 23
.byte 27
.byte 14
.ascii "\264B"
.byte 25
.byte 17
.byte 1
.byte 18
.byte 6
.byte 0
.byte 0
.byte 2
.byte 46
.byte 1
.byte 17
.byte 1
.byte 18
.byte 6
.byte 64
.byte 24
.byte 3
.byte 14
.byte 58
.byte 11
.byte 59
.byte 11
.byte 39
.byte 25
.byte 73
.byte 19
.byte 63
.byte 25
.byte 0
.byte 0
.byte 3
.byte 5
.byte 0
.byte 2
.byte 23
.byte 3
.byte 14
.byte 58
.byte 11
.byte 59
.byte 11
.byte 73
.byte 19
.byte 0
.byte 0
.byte 4
.byte 36
.byte 0
.byte 3
.byte 14
.byte 62
.byte 11
.byte 11
.byte 11
.byte 0
.byte 0
.byte 5
.byte 15
.byte 0
.byte 73
.byte 19
.byte 0
.byte 0
.byte 0
.section .debug_info,"",%progbits
.Lcu_begin0:
.long 84
.short 4
.long .debug_abbrev
.byte 4
.byte 1
.long .Linfo_string0
.short 12
.long .Linfo_string1
.long .Lline_table_start0
.long .Linfo_string2
.long .Lfunc_begin0
.long .Lfunc_end0-.Lfunc_begin0
.byte 2
.long .Lfunc_begin0
.long .Lfunc_end0-.Lfunc_begin0
.byte 1
.byte 91
.long .Linfo_string3
.byte 1
.byte 1
.long 75
.byte 3
.long .Ldebug_loc0
.long .Linfo_string5
.byte 1
.byte 1
.long 82
.byte 0
.byte 4
.long .Linfo_string4
.byte 5
.byte 4
.byte 5
.long 75
.byte 0
.section .debug_ranges,"",%progbits
.section .debug_macinfo,"",%progbits
.Lcu_macro_begin0:
.byte 0
.section .debug_pubnames,"",%progbits
.long .LpubNames_end0-.LpubNames_begin0
.LpubNames_begin0:
.short 2
.long .Lcu_begin0
.long 88
.long 38
.asciz "foo"
.long 0
.LpubNames_end0:
.section .debug_pubtypes,"",%progbits
.long .LpubTypes_end0-.LpubTypes_begin0
.LpubTypes_begin0:
.short 2
.long .Lcu_begin0
.long 88
.long 75
.asciz "int"
.long 0
.LpubTypes_end0:
.ident "clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)"
.section ".note.GNU-stack","",%progbits
.eabi_attribute 30, 1
.section .debug_line,"",%progbits
.Lline_table_start0:

372
test/tools/llvm-objdump/PowerPC/debug-vars.s Normal file
View File

@ -0,0 +1,372 @@
## Check that the --debug-vars option works for simple register locations, when
## using DWARF4 debug info, with multiple functions in one section.
## Generated with this compile command and source code:
## clang --target=arm--none-eabi -march=armv7-a -c debug.c -O1 -gdwarf-3 -S -o -
## clang --target=powerpc64-unknown-linux -c debug.c -O1 -S -o -
## int foo(int a, int b, int c) {
## int x = a + b;
## int y = x + c;
## return y;
## }
##
## int bar(int a) {
## a++;
## return a;
## }
# RUN: llvm-mc -triple powerpc64-unknown-linux < %s -filetype=obj | \
# RUN: llvm-objdump - -d --debug-vars --no-show-raw-insn | \
# RUN: FileCheck %s
# CHECK: Disassembly of section .text:
# CHECK-EMPTY:
# CHECK-NEXT: 0000000000000000 <.text>:
# CHECK-NEXT: ┠─ a = S3
# CHECK-NEXT: ┃ ┠─ b = S4
# CHECK-NEXT: ┃ ┃ ┠─ c = S5
# CHECK-NEXT: ┃ ┃ ┃ ┌─ x = S3
# CHECK-NEXT: 0: add 3, 4, 3 ┻ ┃ ┃ ╈
# CHECK-NEXT: ┌─ y = S3
# CHECK-NEXT: 4: add 3, 3, 5 ╈ ┃ ┃ ┻
# CHECK-NEXT: 8: extsw 3, 3 ┻ ┃ ┃
# CHECK-NEXT: c: blr ┃ ┃
# CHECK-NEXT: ...
# CHECK-NEXT: ┠─ a = S3
# CHECK-NEXT: 1c: addi 3, 3, 1 ┃
# CHECK-NEXT: 20: extsw 3, 3 ┻
# CHECK-NEXT: 24: blr
# CHECK-NEXT: ...
.text
.file "debug.c"
.globl foo # -- Begin function foo
.p2align 2
.type foo,@function
.section .opd,"aw",@progbits
foo: # @foo
.p2align 3
.quad .Lfunc_begin0
.quad .TOC.@tocbase
.quad 0
.text
.Lfunc_begin0:
.file 1 "/work" "llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c"
.loc 1 1 0 # llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c:1:0
.cfi_sections .debug_frame
.cfi_startproc
# %bb.0: # %entry
#DEBUG_VALUE: foo:a <- $x3
#DEBUG_VALUE: foo:a <- $r3
#DEBUG_VALUE: foo:b <- $x4
#DEBUG_VALUE: foo:b <- $x4
#DEBUG_VALUE: foo:b <- $r4
#DEBUG_VALUE: foo:c <- $x5
#DEBUG_VALUE: foo:c <- $x5
#DEBUG_VALUE: foo:c <- $r5
.loc 1 2 13 prologue_end # llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c:2:13
add 3, 4, 3
.Ltmp0:
#DEBUG_VALUE: foo:x <- $r3
.loc 1 3 13 # llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c:3:13
add 3, 3, 5
.Ltmp1:
#DEBUG_VALUE: foo:y <- $r3
.loc 1 4 3 # llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c:4:3
extsw 3, 3
.Ltmp2:
blr
.Ltmp3:
.long 0
.quad 0
.Lfunc_end0:
.size foo, .Lfunc_end0-.Lfunc_begin0
.cfi_endproc
# -- End function
.globl bar # -- Begin function bar
.p2align 2
.type bar,@function
.section .opd,"aw",@progbits
bar: # @bar
.p2align 3
.quad .Lfunc_begin1
.quad .TOC.@tocbase
.quad 0
.text
.Lfunc_begin1:
.loc 1 7 0 # llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c:7:0
.cfi_startproc
# %bb.0: # %entry
#DEBUG_VALUE: bar:a <- $x3
#DEBUG_VALUE: bar:a <- $r3
.loc 1 8 4 prologue_end # llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c:8:4
addi 3, 3, 1
.Ltmp4:
#DEBUG_VALUE: bar:a <- $r3
.loc 1 9 3 # llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c:9:3
extsw 3, 3
.Ltmp5:
blr
.Ltmp6:
.long 0
.quad 0
.Lfunc_end1:
.size bar, .Lfunc_end1-.Lfunc_begin1
.cfi_endproc
# -- End function
.section .debug_str,"MS",@progbits,1
.Linfo_string0:
.asciz "clang version 10.0.0 (git@github.com:llvm/llvm-project.git e73f78acd34360f7450b81167d9dc858ccddc262)" # string offset=0
.Linfo_string1:
.asciz "/work/llvm/src/llvm/test/tools/llvm-objdump/ARM/Inputs/debug.c" # string offset=101
.Linfo_string2:
.asciz "/work/scratch" # string offset=164
.Linfo_string3:
.asciz "foo" # string offset=178
.Linfo_string4:
.asciz "int" # string offset=182
.Linfo_string5:
.asciz "bar" # string offset=186
.Linfo_string6:
.asciz "a" # string offset=190
.Linfo_string7:
.asciz "b" # string offset=192
.Linfo_string8:
.asciz "c" # string offset=194
.Linfo_string9:
.asciz "x" # string offset=196
.Linfo_string10:
.asciz "y" # string offset=198
.section .debug_loc,"",@progbits
.Ldebug_loc0:
.quad .Lfunc_begin0-.Lfunc_begin0
.quad .Ltmp0-.Lfunc_begin0
.short 3 # Loc expr size
.byte 144 # super-register DW_OP_regx
.byte 179 # 1203
.byte 9 #
.quad 0
.quad 0
.Ldebug_loc1:
.quad .Ltmp0-.Lfunc_begin0
.quad .Ltmp1-.Lfunc_begin0
.short 3 # Loc expr size
.byte 144 # super-register DW_OP_regx
.byte 179 # 1203
.byte 9 #
.quad 0
.quad 0
.Ldebug_loc2:
.quad .Ltmp1-.Lfunc_begin0
.quad .Ltmp2-.Lfunc_begin0
.short 3 # Loc expr size
.byte 144 # super-register DW_OP_regx
.byte 179 # 1203
.byte 9 #
.quad 0
.quad 0
.Ldebug_loc3:
.quad .Lfunc_begin1-.Lfunc_begin0
.quad .Ltmp5-.Lfunc_begin0
.short 3 # Loc expr size
.byte 144 # super-register DW_OP_regx
.byte 179 # 1203
.byte 9 #
.quad 0
.quad 0
.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 14 # DW_FORM_strp
.byte 19 # DW_AT_language
.byte 5 # DW_FORM_data2
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 16 # DW_AT_stmt_list
.byte 23 # DW_FORM_sec_offset
.byte 27 # DW_AT_comp_dir
.byte 14 # DW_FORM_strp
.byte 17 # DW_AT_low_pc
.byte 1 # DW_FORM_addr
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 2 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.byte 17 # DW_AT_low_pc
.byte 1 # DW_FORM_addr
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 64 # DW_AT_frame_base
.byte 24 # DW_FORM_exprloc
.ascii "\227B" # DW_AT_GNU_all_call_sites
.byte 25 # DW_FORM_flag_present
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 39 # DW_AT_prototyped
.byte 25 # DW_FORM_flag_present
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 3 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 23 # DW_FORM_sec_offset
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 4 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 5 # Abbreviation Code
.byte 52 # DW_TAG_variable
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 23 # DW_FORM_sec_offset
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 6 # Abbreviation Code
.byte 36 # DW_TAG_base_type
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 62 # DW_AT_encoding
.byte 11 # DW_FORM_data1
.byte 11 # DW_AT_byte_size
.byte 11 # DW_FORM_data1
.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 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.byte 1 # Abbrev [1] 0xb:0xb5 DW_TAG_compile_unit
.long .Linfo_string0 # DW_AT_producer
.short 12 # DW_AT_language
.long .Linfo_string1 # DW_AT_name
.long .Lline_table_start0 # DW_AT_stmt_list
.long .Linfo_string2 # DW_AT_comp_dir
.quad .Lfunc_begin0 # DW_AT_low_pc
.long .Lfunc_end1-.Lfunc_begin0 # DW_AT_high_pc
.byte 2 # Abbrev [2] 0x2a:0x65 DW_TAG_subprogram
.quad .Lfunc_begin0 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
.byte 81
# DW_AT_GNU_all_call_sites
.long .Linfo_string3 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
# DW_AT_prototyped
.long 184 # DW_AT_type
# DW_AT_external
.byte 3 # Abbrev [3] 0x43:0xf DW_TAG_formal_parameter
.long .Ldebug_loc0 # DW_AT_location
.long .Linfo_string6 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 184 # DW_AT_type
.byte 4 # Abbrev [4] 0x52:0xf DW_TAG_formal_parameter
.byte 3 # DW_AT_location
.byte 144
.ascii "\264\t"
.long .Linfo_string7 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 184 # DW_AT_type
.byte 4 # Abbrev [4] 0x61:0xf DW_TAG_formal_parameter
.byte 3 # DW_AT_location
.byte 144
.ascii "\265\t"
.long .Linfo_string8 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 184 # DW_AT_type
.byte 5 # Abbrev [5] 0x70:0xf DW_TAG_variable
.long .Ldebug_loc1 # DW_AT_location
.long .Linfo_string9 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 2 # DW_AT_decl_line
.long 184 # DW_AT_type
.byte 5 # Abbrev [5] 0x7f:0xf DW_TAG_variable
.long .Ldebug_loc2 # DW_AT_location
.long .Linfo_string10 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 3 # DW_AT_decl_line
.long 184 # DW_AT_type
.byte 0 # End Of Children Mark
.byte 2 # Abbrev [2] 0x8f:0x29 DW_TAG_subprogram
.quad .Lfunc_begin1 # DW_AT_low_pc
.long .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
.byte 81
# DW_AT_GNU_all_call_sites
.long .Linfo_string5 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 7 # DW_AT_decl_line
# DW_AT_prototyped
.long 184 # DW_AT_type
# DW_AT_external
.byte 3 # Abbrev [3] 0xa8:0xf DW_TAG_formal_parameter
.long .Ldebug_loc3 # DW_AT_location
.long .Linfo_string6 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 7 # DW_AT_decl_line
.long 184 # DW_AT_type
.byte 0 # End Of Children Mark
.byte 6 # Abbrev [6] 0xb8:0x7 DW_TAG_base_type
.long .Linfo_string4 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 0 # End Of Children Mark
.Ldebug_info_end0:
.ident "clang version 10.0.0 (git@github.com:llvm/llvm-project.git e73f78acd34360f7450b81167d9dc858ccddc262)"
.section ".note.GNU-stack","",@progbits
.addrsig
.section .debug_line,"",@progbits
.Lline_table_start0:

536
tools/llvm-objdump/llvm-objdump.cpp
View File

@ -21,7 +21,9 @@
#include "MachODump.h"
#include "WasmDump.h"
#include "XCOFFDump.h"
#include "llvm/ADT/IndexedMap.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SetOperations.h"
#include "llvm/ADT/StringExtras.h"
@ -79,6 +81,8 @@ using namespace llvm;
using namespace llvm::object;
using namespace llvm::objdump;
#define DEBUG_TYPE "objdump"
static cl::OptionCategory ObjdumpCat("llvm-objdump Options");
static cl::opt<uint64_t> AdjustVMA(
@ -344,6 +348,28 @@ static cl::opt<bool>
cl::cat(ObjdumpCat));
static cl::alias WideShort("w", cl::Grouping, cl::aliasopt(Wide));
enum DebugVarsFormat {
DVDisabled,
DVUnicode,
DVASCII,
};
static cl::opt<DebugVarsFormat> DbgVariables(
"debug-vars", cl::init(DVDisabled),
cl::desc("Print the locations (in registers or memory) of "
"source-level variables alongside disassembly"),
cl::ValueOptional,
cl::values(clEnumValN(DVUnicode, "", "unicode"),
clEnumValN(DVUnicode, "unicode", "unicode"),
clEnumValN(DVASCII, "ascii", "unicode")),
cl::cat(ObjdumpCat));
static cl::opt<int>
DbgIndent("debug-vars-indent", cl::init(40),
cl::desc("Distance to indent the source-level variable display, "
"relative to the start of the disassembly"),
cl::cat(ObjdumpCat));
static cl::extrahelp
HelpResponse("\nPass @FILE as argument to read options from FILE.\n");
@ -548,6 +574,357 @@ static bool getHidden(RelocationRef RelRef) {
}
namespace {
/// Get the column at which we want to start printing the instruction
/// disassembly, taking into account anything which appears to the left of it.
unsigned getInstStartColumn(const MCSubtargetInfo &STI) {
return NoShowRawInsn ? 16 : STI.getTargetTriple().isX86() ? 40 : 24;
}
/// Stores a single expression representing the location of a source-level
/// variable, along with the PC range for which that expression is valid.
struct LiveVariable {
DWARFLocationExpression LocExpr;
const char *VarName;
DWARFUnit *Unit;
const DWARFDie FuncDie;
LiveVariable(const DWARFLocationExpression &LocExpr, const char *VarName,
DWARFUnit *Unit, const DWARFDie FuncDie)
: LocExpr(LocExpr), VarName(VarName), Unit(Unit), FuncDie(FuncDie) {}
bool liveAtAddress(object::SectionedAddress Addr) {
if (LocExpr.Range == None)
return false;
return LocExpr.Range->SectionIndex == Addr.SectionIndex &&
LocExpr.Range->LowPC <= Addr.Address &&
LocExpr.Range->HighPC > Addr.Address;
}
void print(raw_ostream &OS, const MCRegisterInfo &MRI) const {
DataExtractor Data({LocExpr.Expr.data(), LocExpr.Expr.size()},
Unit->getContext().isLittleEndian(), 0);
DWARFExpression Expression(Data, Unit->getAddressByteSize());
Expression.printCompact(OS, MRI);
}
};
/// Helper class for printing source variable locations alongside disassembly.
class LiveVariablePrinter {
// Information we want to track about one column in which we are printing a
// variable live range.
struct Column {
unsigned VarIdx = NullVarIdx;
bool LiveIn = false;
bool LiveOut = false;
bool MustDrawLabel = false;
bool isActive() const { return VarIdx != NullVarIdx; }
static constexpr unsigned NullVarIdx = std::numeric_limits<unsigned>::max();
};
// All live variables we know about in the object/image file.
std::vector<LiveVariable> LiveVariables;
// The columns we are currently drawing.
IndexedMap<Column> ActiveCols;
const MCRegisterInfo &MRI;
const MCSubtargetInfo &STI;
void addVariable(DWARFDie FuncDie, DWARFDie VarDie) {
uint64_t FuncLowPC, FuncHighPC, SectionIndex;
FuncDie.getLowAndHighPC(FuncLowPC, FuncHighPC, SectionIndex);
const char *VarName = VarDie.getName(DINameKind::ShortName);
DWARFUnit *U = VarDie.getDwarfUnit();
Expected<DWARFLocationExpressionsVector> Locs =
VarDie.getLocations(dwarf::DW_AT_location);
if (!Locs) {
// If the variable doesn't have any locations, just ignore it. We don't
// report an error or warning here as that could be noisy on optimised
// code.
consumeError(Locs.takeError());
return;
}
for (const DWARFLocationExpression &LocExpr : *Locs) {
if (LocExpr.Range) {
LiveVariables.emplace_back(LocExpr, VarName, U, FuncDie);
} else {
// If the LocExpr does not have an associated range, it is valid for
// the whole of the function.
// TODO: technically it is not valid for any range covered by another
// LocExpr, does that happen in reality?
DWARFLocationExpression WholeFuncExpr{
DWARFAddressRange(FuncLowPC, FuncHighPC, SectionIndex),
LocExpr.Expr};
LiveVariables.emplace_back(WholeFuncExpr, VarName, U, FuncDie);
}
}
}
void addFunction(DWARFDie D) {
for (const DWARFDie &Child : D.children()) {
if (Child.getTag() == dwarf::DW_TAG_variable ||
Child.getTag() == dwarf::DW_TAG_formal_parameter)
addVariable(D, Child);
else
addFunction(Child);
}
}
// Get the column number (in characters) at which the first live variable
// line should be printed.
unsigned getIndentLevel() const {
return DbgIndent + getInstStartColumn(STI);
}
// Indent to the first live-range column to the right of the currently
// printed line, and return the index of that column.
// TODO: formatted_raw_ostream uses "column" to mean a number of characters
// since the last \n, and we use it to mean the number of slots in which we
// put live variable lines. Pick a less overloaded word.
unsigned moveToFirstVarColumn(formatted_raw_ostream &OS) {
// Logical column number: column zero is the first column we print in, each
// logical column is 2 physical columns wide.
unsigned FirstUnprintedLogicalColumn =
std::max((int)(OS.getColumn() - getIndentLevel() + 1) / 2, 0);
// Physical column number: the actual column number in characters, with
// zero being the left-most side of the screen.
unsigned FirstUnprintedPhysicalColumn =
getIndentLevel() + FirstUnprintedLogicalColumn * 2;
if (FirstUnprintedPhysicalColumn > OS.getColumn())
OS.PadToColumn(FirstUnprintedPhysicalColumn);
return FirstUnprintedLogicalColumn;
}
unsigned findFreeColumn() {
for (unsigned ColIdx = 0; ColIdx < ActiveCols.size(); ++ColIdx)
if (!ActiveCols[ColIdx].isActive())
return ColIdx;
size_t OldSize = ActiveCols.size();
ActiveCols.grow(std::max<size_t>(OldSize * 2, 1));
return OldSize;
}
public:
LiveVariablePrinter(const MCRegisterInfo &MRI, const MCSubtargetInfo &STI)
: LiveVariables(), ActiveCols(Column()), MRI(MRI), STI(STI) {}
void dump() const {
for (const LiveVariable &LV : LiveVariables) {
dbgs() << LV.VarName << " @ " << LV.LocExpr.Range << ": ";
LV.print(dbgs(), MRI);
dbgs() << "\n";
}
}
void addCompileUnit(DWARFDie D) {
if (D.getTag() == dwarf::DW_TAG_subprogram)
addFunction(D);
else
for (const DWARFDie &Child : D.children())
addFunction(Child);
}
/// Update to match the state of the instruction between ThisAddr and
/// NextAddr. In the common case, any live range active at ThisAddr is
/// live-in to the instruction, and any live range active at NextAddr is
/// live-out of the instruction. If IncludeDefinedVars is false, then live
/// ranges starting at NextAddr will be ignored.
void update(object::SectionedAddress ThisAddr,
object::SectionedAddress NextAddr, bool IncludeDefinedVars) {
// First, check variables which have already been assigned a column, so
// that we don't change their order.
SmallSet<unsigned, 8> CheckedVarIdxs;
for (unsigned ColIdx = 0, End = ActiveCols.size(); ColIdx < End; ++ColIdx) {
if (!ActiveCols[ColIdx].isActive())
continue;
CheckedVarIdxs.insert(ActiveCols[ColIdx].VarIdx);
LiveVariable &LV = LiveVariables[ActiveCols[ColIdx].VarIdx];
ActiveCols[ColIdx].LiveIn = LV.liveAtAddress(ThisAddr);
ActiveCols[ColIdx].LiveOut = LV.liveAtAddress(NextAddr);
LLVM_DEBUG(dbgs() << "pass 1, " << ThisAddr.Address << "-"
<< NextAddr.Address << ", " << LV.VarName << ", Col "
<< ColIdx << ": LiveIn=" << ActiveCols[ColIdx].LiveIn
<< ", LiveOut=" << ActiveCols[ColIdx].LiveOut << "\n");
if (!ActiveCols[ColIdx].LiveIn && !ActiveCols[ColIdx].LiveOut)
ActiveCols[ColIdx].VarIdx = Column::NullVarIdx;
}
// Next, look for variables which don't already have a column, but which
// are now live.
if (IncludeDefinedVars) {
for (unsigned VarIdx = 0, End = LiveVariables.size(); VarIdx < End;
++VarIdx) {
if (CheckedVarIdxs.count(VarIdx))
continue;
LiveVariable &LV = LiveVariables[VarIdx];
bool LiveIn = LV.liveAtAddress(ThisAddr);
bool LiveOut = LV.liveAtAddress(NextAddr);
if (!LiveIn && !LiveOut)
continue;
unsigned ColIdx = findFreeColumn();
LLVM_DEBUG(dbgs() << "pass 2, " << ThisAddr.Address << "-"
<< NextAddr.Address << ", " << LV.VarName << ", Col "
<< ColIdx << ": LiveIn=" << LiveIn
<< ", LiveOut=" << LiveOut << "\n");
ActiveCols[ColIdx].VarIdx = VarIdx;
ActiveCols[ColIdx].LiveIn = LiveIn;
ActiveCols[ColIdx].LiveOut = LiveOut;
ActiveCols[ColIdx].MustDrawLabel = true;
}
}
}
enum class LineChar {
RangeStart,
RangeMid,
RangeEnd,
LabelVert,
LabelCornerNew,
LabelCornerActive,
LabelHoriz,
};
const char *getLineChar(LineChar C) const {
bool IsASCII = DbgVariables == DVASCII;
switch (C) {
case LineChar::RangeStart:
return IsASCII ? "^" : u8"\u2548";
case LineChar::RangeMid:
return IsASCII ? "|" : u8"\u2503";
case LineChar::RangeEnd:
return IsASCII ? "v" : u8"\u253b";
case LineChar::LabelVert:
return IsASCII ? "|" : u8"\u2502";
case LineChar::LabelCornerNew:
return IsASCII ? "/" : u8"\u250c";
case LineChar::LabelCornerActive:
return IsASCII ? "|" : u8"\u2520";
case LineChar::LabelHoriz:
return IsASCII ? "-" : u8"\u2500";
}
}
/// Print live ranges to the right of an existing line. This assumes the
/// line is not an instruction, so doesn't start or end any live ranges, so
/// we only need to print active ranges or empty columns. If AfterInst is
/// true, this is being printed after the last instruction fed to update(),
/// otherwise this is being printed before it.
void printAfterOtherLine(formatted_raw_ostream &OS, bool AfterInst) {
if (ActiveCols.size()) {
unsigned FirstUnprintedColumn = moveToFirstVarColumn(OS);
for (size_t ColIdx = FirstUnprintedColumn, End = ActiveCols.size();
ColIdx < End; ++ColIdx) {
if (ActiveCols[ColIdx].isActive()) {
if ((AfterInst && ActiveCols[ColIdx].LiveOut) ||
(!AfterInst && ActiveCols[ColIdx].LiveIn))
OS << getLineChar(LineChar::RangeMid);
else if (!AfterInst && ActiveCols[ColIdx].LiveOut)
OS << getLineChar(LineChar::LabelVert);
else
OS << " ";
}
OS << " ";
}
}
OS << "\n";
}
/// Print any live variable range info needed to the right of a
/// non-instruction line of disassembly. This is where we print the variable
/// names and expressions, with thin line-drawing characters connecting them
/// to the live range which starts at the next instruction. If MustPrint is
/// true, we have to print at least one line (with the continuation of any
/// already-active live ranges) because something has already been printed
/// earlier on this line.
void printBetweenInsts(formatted_raw_ostream &OS, bool MustPrint) {
bool PrintedSomething = false;
for (unsigned ColIdx = 0, End = ActiveCols.size(); ColIdx < End; ++ColIdx) {
if (ActiveCols[ColIdx].isActive() && ActiveCols[ColIdx].MustDrawLabel) {
// First we need to print the live range markers for any active
// columns to the left of this one.
OS.PadToColumn(getIndentLevel());
for (unsigned ColIdx2 = 0; ColIdx2 < ColIdx; ++ColIdx2) {
if (ActiveCols[ColIdx2].isActive()) {
if (ActiveCols[ColIdx2].MustDrawLabel &&
!ActiveCols[ColIdx2].LiveIn)
OS << getLineChar(LineChar::LabelVert) << " ";
else
OS << getLineChar(LineChar::RangeMid) << " ";
} else
OS << " ";
}
// Then print the variable name and location of the new live range,
// with box drawing characters joining it to the live range line.
OS << getLineChar(ActiveCols[ColIdx].LiveIn
? LineChar::LabelCornerActive
: LineChar::LabelCornerNew)
<< getLineChar(LineChar::LabelHoriz) << " ";
WithColor(OS, raw_ostream::GREEN)
<< LiveVariables[ActiveCols[ColIdx].VarIdx].VarName;
OS << " = ";
{
WithColor ExprColor(OS, raw_ostream::CYAN);
LiveVariables[ActiveCols[ColIdx].VarIdx].print(OS, MRI);
}
// If there are any columns to the right of the expression we just
// printed, then continue their live range lines.
unsigned FirstUnprintedColumn = moveToFirstVarColumn(OS);
for (unsigned ColIdx2 = FirstUnprintedColumn, End = ActiveCols.size();
ColIdx2 < End; ++ColIdx2) {
if (ActiveCols[ColIdx2].isActive() && ActiveCols[ColIdx2].LiveIn)
OS << getLineChar(LineChar::RangeMid) << " ";
else
OS << " ";
}
OS << "\n";
PrintedSomething = true;
}
}
for (unsigned ColIdx = 0, End = ActiveCols.size(); ColIdx < End; ++ColIdx)
if (ActiveCols[ColIdx].isActive())
ActiveCols[ColIdx].MustDrawLabel = false;
// If we must print something (because we printed a line/column number),
// but don't have any new variables to print, then print a line which
// just continues any existing live ranges.
if (MustPrint && !PrintedSomething)
printAfterOtherLine(OS, false);
}
/// Print the live variable ranges to the right of a disassembled instruction.
void printAfterInst(formatted_raw_ostream &OS) {
if (!ActiveCols.size())
return;
unsigned FirstUnprintedColumn = moveToFirstVarColumn(OS);
for (unsigned ColIdx = FirstUnprintedColumn, End = ActiveCols.size();
ColIdx < End; ++ColIdx) {
if (!ActiveCols[ColIdx].isActive())
OS << " ";
else if (ActiveCols[ColIdx].LiveIn && ActiveCols[ColIdx].LiveOut)
OS << getLineChar(LineChar::RangeMid) << " ";
else if (ActiveCols[ColIdx].LiveOut)
OS << getLineChar(LineChar::RangeStart) << " ";
else if (ActiveCols[ColIdx].LiveIn)
OS << getLineChar(LineChar::RangeEnd) << " ";
else
llvm_unreachable("var must be live in or out!");
}
}
};
class SourcePrinter {
protected:
DILineInfo OldLineInfo;
@ -565,11 +942,12 @@ protected:
private:
bool cacheSource(const DILineInfo& LineInfoFile);
void printLines(raw_ostream &OS, const DILineInfo &LineInfo,
StringRef Delimiter);
void printLines(formatted_raw_ostream &OS, const DILineInfo &LineInfo,
StringRef Delimiter, LiveVariablePrinter &LVP);
void printSources(raw_ostream &OS, const DILineInfo &LineInfo,
StringRef ObjectFilename, StringRef Delimiter);
void printSources(formatted_raw_ostream &OS, const DILineInfo &LineInfo,
StringRef ObjectFilename, StringRef Delimiter,
LiveVariablePrinter &LVP);
public:
SourcePrinter() = default;
@ -583,9 +961,10 @@ public:
Symbolizer.reset(new symbolize::LLVMSymbolizer(SymbolizerOpts));
}
virtual ~SourcePrinter() = default;
virtual void printSourceLine(raw_ostream &OS,
virtual void printSourceLine(formatted_raw_ostream &OS,
object::SectionedAddress Address,
StringRef ObjectFilename,
LiveVariablePrinter &LVP,
StringRef Delimiter = "; ");
};
@ -619,9 +998,10 @@ bool SourcePrinter::cacheSource(const DILineInfo &LineInfo) {
return true;
}
void SourcePrinter::printSourceLine(raw_ostream &OS,
void SourcePrinter::printSourceLine(formatted_raw_ostream &OS,
object::SectionedAddress Address,
StringRef ObjectFilename,
LiveVariablePrinter &LVP,
StringRef Delimiter) {
if (!Symbolizer)
return;
@ -646,14 +1026,15 @@ void SourcePrinter::printSourceLine(raw_ostream &OS,
}
if (PrintLines)
printLines(OS, LineInfo, Delimiter);
printLines(OS, LineInfo, Delimiter, LVP);
if (PrintSource)
printSources(OS, LineInfo, ObjectFilename, Delimiter);
printSources(OS, LineInfo, ObjectFilename, Delimiter, LVP);
OldLineInfo = LineInfo;
}
void SourcePrinter::printLines(raw_ostream &OS, const DILineInfo &LineInfo,
StringRef Delimiter) {
void SourcePrinter::printLines(formatted_raw_ostream &OS,
const DILineInfo &LineInfo, StringRef Delimiter,
LiveVariablePrinter &LVP) {
bool PrintFunctionName = LineInfo.FunctionName != DILineInfo::BadString &&
LineInfo.FunctionName != OldLineInfo.FunctionName;
if (PrintFunctionName) {
@ -666,13 +1047,16 @@ void SourcePrinter::printLines(raw_ostream &OS, const DILineInfo &LineInfo,
}
if (LineInfo.FileName != DILineInfo::BadString && LineInfo.Line != 0 &&
(OldLineInfo.Line != LineInfo.Line ||
OldLineInfo.FileName != LineInfo.FileName || PrintFunctionName))
OS << Delimiter << LineInfo.FileName << ":" << LineInfo.Line << "\n";
OldLineInfo.FileName != LineInfo.FileName || PrintFunctionName)) {
OS << Delimiter << LineInfo.FileName << ":" << LineInfo.Line;
LVP.printBetweenInsts(OS, true);
}
}
void SourcePrinter::printSources(raw_ostream &OS, const DILineInfo &LineInfo,
StringRef ObjectFilename,
StringRef Delimiter) {
void SourcePrinter::printSources(formatted_raw_ostream &OS,
const DILineInfo &LineInfo,
StringRef ObjectFilename, StringRef Delimiter,
LiveVariablePrinter &LVP) {
if (LineInfo.FileName == DILineInfo::BadString || LineInfo.Line == 0 ||
(OldLineInfo.Line == LineInfo.Line &&
OldLineInfo.FileName == LineInfo.FileName))
@ -692,7 +1076,8 @@ void SourcePrinter::printSources(raw_ostream &OS, const DILineInfo &LineInfo,
return;
}
// Vector begins at 0, line numbers are non-zero
OS << Delimiter << LineBuffer->second[LineInfo.Line - 1] << '\n';
OS << Delimiter << LineBuffer->second[LineInfo.Line - 1];
LVP.printBetweenInsts(OS, true);
}
}
@ -710,28 +1095,30 @@ static bool hasMappingSymbols(const ObjectFile *Obj) {
return isArmElf(Obj) || isAArch64Elf(Obj);
}
static void printRelocation(StringRef FileName, const RelocationRef &Rel,
uint64_t Address, bool Is64Bits) {
static void printRelocation(formatted_raw_ostream &OS, StringRef FileName,
const RelocationRef &Rel, uint64_t Address,
bool Is64Bits) {
StringRef Fmt = Is64Bits ? "\t\t%016" PRIx64 ": " : "\t\t\t%08" PRIx64 ": ";
SmallString<16> Name;
SmallString<32> Val;
Rel.getTypeName(Name);
if (Error E = getRelocationValueString(Rel, Val))
reportError(std::move(E), FileName);
outs() << format(Fmt.data(), Address) << Name << "\t" << Val << "\n";
OS << format(Fmt.data(), Address) << Name << "\t" << Val;
}
class PrettyPrinter {
public:
virtual ~PrettyPrinter() = default;
virtual void printInst(MCInstPrinter &IP, const MCInst *MI,
ArrayRef<uint8_t> Bytes,
object::SectionedAddress Address, raw_ostream &OS,
StringRef Annot, MCSubtargetInfo const &STI,
SourcePrinter *SP, StringRef ObjectFilename,
std::vector<RelocationRef> *Rels = nullptr) {
virtual void
printInst(MCInstPrinter &IP, const MCInst *MI, ArrayRef<uint8_t> Bytes,
object::SectionedAddress Address, formatted_raw_ostream &OS,
StringRef Annot, MCSubtargetInfo const &STI, SourcePrinter *SP,
StringRef ObjectFilename, std::vector<RelocationRef> *Rels,
LiveVariablePrinter &LVP) {
if (SP && (PrintSource || PrintLines))
SP->printSourceLine(OS, Address, ObjectFilename);
SP->printSourceLine(OS, Address, ObjectFilename, LVP);
LVP.printBetweenInsts(OS, false);
size_t Start = OS.tell();
if (!NoLeadingAddr)
@ -741,11 +1128,9 @@ public:
dumpBytes(Bytes, OS);
}
// The output of printInst starts with a tab. Print some spaces so that the
// tab has 1 column and advances to the target tab stop. Give more columns
// to x86 which may encode an instruction with many bytes.
unsigned TabStop =
NoShowRawInsn ? 16 : STI.getTargetTriple().isX86() ? 40 : 24;
// The output of printInst starts with a tab. Print some spaces so that
// the tab has 1 column and advances to the target tab stop.
unsigned TabStop = getInstStartColumn(STI);
unsigned Column = OS.tell() - Start;
OS.indent(Column < TabStop - 1 ? TabStop - 1 - Column : 7 - Column % 8);
@ -766,7 +1151,7 @@ PrettyPrinter PrettyPrinterInst;
class HexagonPrettyPrinter : public PrettyPrinter {
public:
void printLead(ArrayRef<uint8_t> Bytes, uint64_t Address,
raw_ostream &OS) {
formatted_raw_ostream &OS) {
uint32_t opcode =
(Bytes[3] << 24) | (Bytes[2] << 16) | (Bytes[1] << 8) | Bytes[0];
if (!NoLeadingAddr)
@ -778,12 +1163,12 @@ public:
}
}
void printInst(MCInstPrinter &IP, const MCInst *MI, ArrayRef<uint8_t> Bytes,
object::SectionedAddress Address, raw_ostream &OS,
object::SectionedAddress Address, formatted_raw_ostream &OS,
StringRef Annot, MCSubtargetInfo const &STI, SourcePrinter *SP,
StringRef ObjectFilename,
std::vector<RelocationRef> *Rels) override {
StringRef ObjectFilename, std::vector<RelocationRef> *Rels,
LiveVariablePrinter &LVP) override {
if (SP && (PrintSource || PrintLines))
SP->printSourceLine(OS, Address, ObjectFilename, "");
SP->printSourceLine(OS, Address, ObjectFilename, LVP, "");
if (!MI) {
printLead(Bytes, Address.Address, OS);
OS << " <unknown>";
@ -809,7 +1194,7 @@ public:
auto PrintReloc = [&]() -> void {
while ((RelCur != RelEnd) && (RelCur->getOffset() <= Address.Address)) {
if (RelCur->getOffset() == Address.Address) {
printRelocation(ObjectFilename, *RelCur, Address.Address, false);
printRelocation(OS, ObjectFilename, *RelCur, Address.Address, false);
return;
}
++RelCur;
@ -820,7 +1205,7 @@ public:
OS << Separator;
Separator = "\n";
if (SP && (PrintSource || PrintLines))
SP->printSourceLine(OS, Address, ObjectFilename, "");
SP->printSourceLine(OS, Address, ObjectFilename, LVP, "");
printLead(Bytes, Address.Address, OS);
OS << Preamble;
Preamble = " ";
@ -848,12 +1233,12 @@ HexagonPrettyPrinter HexagonPrettyPrinterInst;
class AMDGCNPrettyPrinter : public PrettyPrinter {
public:
void printInst(MCInstPrinter &IP, const MCInst *MI, ArrayRef<uint8_t> Bytes,
object::SectionedAddress Address, raw_ostream &OS,
object::SectionedAddress Address, formatted_raw_ostream &OS,
StringRef Annot, MCSubtargetInfo const &STI, SourcePrinter *SP,
StringRef ObjectFilename,
std::vector<RelocationRef> *Rels) override {
StringRef ObjectFilename, std::vector<RelocationRef> *Rels,
LiveVariablePrinter &LVP) override {
if (SP && (PrintSource || PrintLines))
SP->printSourceLine(OS, Address, ObjectFilename);
SP->printSourceLine(OS, Address, ObjectFilename, LVP);
if (MI) {
SmallString<40> InstStr;
@ -900,12 +1285,12 @@ AMDGCNPrettyPrinter AMDGCNPrettyPrinterInst;
class BPFPrettyPrinter : public PrettyPrinter {
public:
void printInst(MCInstPrinter &IP, const MCInst *MI, ArrayRef<uint8_t> Bytes,
object::SectionedAddress Address, raw_ostream &OS,
object::SectionedAddress Address, formatted_raw_ostream &OS,
StringRef Annot, MCSubtargetInfo const &STI, SourcePrinter *SP,
StringRef ObjectFilename,
std::vector<RelocationRef> *Rels) override {
StringRef ObjectFilename, std::vector<RelocationRef> *Rels,
LiveVariablePrinter &LVP) override {
if (SP && (PrintSource || PrintLines))
SP->printSourceLine(OS, Address, ObjectFilename);
SP->printSourceLine(OS, Address, ObjectFilename, LVP);
if (!NoLeadingAddr)
OS << format("%8" PRId64 ":", Address.Address / 8);
if (!NoShowRawInsn) {
@ -1094,26 +1479,27 @@ static char getMappingSymbolKind(ArrayRef<MappingSymbolPair> MappingSymbols,
static uint64_t dumpARMELFData(uint64_t SectionAddr, uint64_t Index,
uint64_t End, const ObjectFile *Obj,
ArrayRef<uint8_t> Bytes,
ArrayRef<MappingSymbolPair> MappingSymbols) {
ArrayRef<MappingSymbolPair> MappingSymbols,
raw_ostream &OS) {
support::endianness Endian =
Obj->isLittleEndian() ? support::little : support::big;
outs() << format("%8" PRIx64 ":\t", SectionAddr + Index);
OS << format("%8" PRIx64 ":\t", SectionAddr + Index);
if (Index + 4 <= End) {
dumpBytes(Bytes.slice(Index, 4), outs());
outs() << "\t.word\t"
dumpBytes(Bytes.slice(Index, 4), OS);
OS << "\t.word\t"
<< format_hex(support::endian::read32(Bytes.data() + Index, Endian),
10);
return 4;
}
if (Index + 2 <= End) {
dumpBytes(Bytes.slice(Index, 2), outs());
outs() << "\t\t.short\t"
dumpBytes(Bytes.slice(Index, 2), OS);
OS << "\t\t.short\t"
<< format_hex(support::endian::read16(Bytes.data() + Index, Endian),
6);
return 2;
}
dumpBytes(Bytes.slice(Index, 1), outs());
outs() << "\t\t.byte\t" << format_hex(Bytes[0], 4);
dumpBytes(Bytes.slice(Index, 1), OS);
OS << "\t\t.byte\t" << format_hex(Bytes[0], 4);
return 1;
}
@ -1288,6 +1674,17 @@ static void disassembleObject(const Target *TheTarget, const ObjectFile *Obj,
stable_sort(SecSyms.second);
stable_sort(AbsoluteSymbols);
std::unique_ptr<DWARFContext> DICtx;
LiveVariablePrinter LVP(*Ctx.getRegisterInfo(), *STI);
if (DbgVariables != DVDisabled) {
DICtx = DWARFContext::create(*Obj);
for (const std::unique_ptr<DWARFUnit> &CU : DICtx->compile_units())
LVP.addCompileUnit(CU->getUnitDIE(false));
}
LLVM_DEBUG(LVP.dump());
for (const SectionRef &Section : ToolSectionFilter(*Obj)) {
if (FilterSections.empty() && !DisassembleAll &&
(!Section.isText() || Section.isVirtual()))
@ -1481,6 +1878,7 @@ static void disassembleObject(const Target *TheTarget, const ObjectFile *Obj,
Symbols[SI].Type != ELF::STT_OBJECT &&
!DisassembleAll;
bool DumpARMELFData = false;
formatted_raw_ostream FOS(outs());
while (Index < End) {
// ARM and AArch64 ELF binaries can interleave data and text in the
// same section. We rely on the markers introduced to understand what
@ -1502,7 +1900,7 @@ static void disassembleObject(const Target *TheTarget, const ObjectFile *Obj,
if (DumpARMELFData) {
Size = dumpARMELFData(SectionAddr, Index, End, Obj, Bytes,
MappingSymbols);
MappingSymbols, FOS);
} else {
// When -z or --disassemble-zeroes are given we always dissasemble
// them. Otherwise we might want to skip zero bytes we see.
@ -1515,7 +1913,7 @@ static void disassembleObject(const Target *TheTarget, const ObjectFile *Obj,
if (size_t N =
countSkippableZeroBytes(Bytes.slice(Index, MaxOffset))) {
outs() << "\t\t..." << '\n';
FOS << "\t\t..." << '\n';
Index += N;
continue;
}
@ -1530,11 +1928,14 @@ static void disassembleObject(const Target *TheTarget, const ObjectFile *Obj,
if (Size == 0)
Size = 1;
LVP.update({Index, Section.getIndex()},
{Index + Size, Section.getIndex()}, Index + Size != End);
PIP.printInst(
*IP, Disassembled ? &Inst : nullptr, Bytes.slice(Index, Size),
{SectionAddr + Index + VMAAdjustment, Section.getIndex()}, outs(),
"", *STI, &SP, Obj->getFileName(), &Rels);
outs() << CommentStream.str();
{SectionAddr + Index + VMAAdjustment, Section.getIndex()}, FOS,
"", *STI, &SP, Obj->getFileName(), &Rels, LVP);
FOS << CommentStream.str();
Comments.clear();
// If disassembly has failed, avoid analysing invalid/incomplete
@ -1551,7 +1952,7 @@ static void disassembleObject(const Target *TheTarget, const ObjectFile *Obj,
Inst, SectionAddr + Index, Size)) {
Target = *MaybeTarget;
PrintTarget = true;
outs() << " # " << Twine::utohexstr(Target);
FOS << " # " << Twine::utohexstr(Target);
}
if (PrintTarget) {
// In a relocatable object, the target's section must reside in
@ -1607,16 +2008,18 @@ static void disassembleObject(const Target *TheTarget, const ObjectFile *Obj,
if (Demangle)
TargetName = demangle(TargetName);
outs() << " <" << TargetName;
FOS << " <" << TargetName;
uint64_t Disp = Target - TargetAddress;
if (Disp)
outs() << "+0x" << Twine::utohexstr(Disp);
outs() << '>';
FOS << "+0x" << Twine::utohexstr(Disp);
FOS << '>';
}
}
}
}
outs() << "\n";
LVP.printAfterInst(FOS);
FOS << "\n";
// Hexagon does this in pretty printer
if (Obj->getArch() != Triple::hexagon) {
@ -1646,8 +2049,9 @@ static void disassembleObject(const Target *TheTarget, const ObjectFile *Obj,
Offset += AdjustVMA;
}
printRelocation(Obj->getFileName(), *RelCur, SectionAddr + Offset,
Is64Bits);
printRelocation(FOS, Obj->getFileName(), *RelCur,
SectionAddr + Offset, Is64Bits);
LVP.printAfterOtherLine(FOS, true);
++RelCur;
}
}