mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-19 02:52:53 +02:00
DebugInfo: Use assembly label arithmetic for address pool size for easier reading/editing
Recommits 350048, 350050 That broke buildbots because of some typos in the test case. llvm-svn: 352019
This commit is contained in:
parent
99c9f56646
commit
da4d116ccc
@ -23,21 +23,24 @@ unsigned AddressPool::getIndex(const MCSymbol *Sym, bool TLS) {
|
|||||||
return IterBool.first->second.Number;
|
return IterBool.first->second.Number;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
MCSymbol *AddressPool::emitHeader(AsmPrinter &Asm, MCSection *Section) {
|
||||||
void AddressPool::emitHeader(AsmPrinter &Asm, MCSection *Section) {
|
|
||||||
static const uint8_t AddrSize = Asm.getDataLayout().getPointerSize();
|
static const uint8_t AddrSize = Asm.getDataLayout().getPointerSize();
|
||||||
uint64_t Length = sizeof(uint16_t) // version
|
StringRef Prefix = "debug_addr_";
|
||||||
+ sizeof(uint8_t) // address_size
|
MCSymbol *BeginLabel = Asm.createTempSymbol(Prefix + "start");
|
||||||
+ sizeof(uint8_t) // segment_selector_size
|
MCSymbol *EndLabel = Asm.createTempSymbol(Prefix + "end");
|
||||||
+ AddrSize * Pool.size(); // entries
|
|
||||||
Asm.OutStreamer->AddComment("Length of contribution");
|
Asm.OutStreamer->AddComment("Length of contribution");
|
||||||
Asm.emitInt32(Length); // TODO: Support DWARF64 format.
|
Asm.EmitLabelDifference(EndLabel, BeginLabel,
|
||||||
|
4); // TODO: Support DWARF64 format.
|
||||||
|
Asm.OutStreamer->EmitLabel(BeginLabel);
|
||||||
Asm.OutStreamer->AddComment("DWARF version number");
|
Asm.OutStreamer->AddComment("DWARF version number");
|
||||||
Asm.emitInt16(Asm.getDwarfVersion());
|
Asm.emitInt16(Asm.getDwarfVersion());
|
||||||
Asm.OutStreamer->AddComment("Address size");
|
Asm.OutStreamer->AddComment("Address size");
|
||||||
Asm.emitInt8(AddrSize);
|
Asm.emitInt8(AddrSize);
|
||||||
Asm.OutStreamer->AddComment("Segment selector size");
|
Asm.OutStreamer->AddComment("Segment selector size");
|
||||||
Asm.emitInt8(0); // TODO: Support non-zero segment_selector_size.
|
Asm.emitInt8(0); // TODO: Support non-zero segment_selector_size.
|
||||||
|
|
||||||
|
return EndLabel;
|
||||||
}
|
}
|
||||||
|
|
||||||
// Emit addresses into the section given.
|
// Emit addresses into the section given.
|
||||||
@ -48,8 +51,10 @@ void AddressPool::emit(AsmPrinter &Asm, MCSection *AddrSection) {
|
|||||||
// Start the dwarf addr section.
|
// Start the dwarf addr section.
|
||||||
Asm.OutStreamer->SwitchSection(AddrSection);
|
Asm.OutStreamer->SwitchSection(AddrSection);
|
||||||
|
|
||||||
|
MCSymbol *EndLabel = nullptr;
|
||||||
|
|
||||||
if (Asm.getDwarfVersion() >= 5)
|
if (Asm.getDwarfVersion() >= 5)
|
||||||
emitHeader(Asm, AddrSection);
|
EndLabel = emitHeader(Asm, AddrSection);
|
||||||
|
|
||||||
// Define the symbol that marks the start of the contribution.
|
// Define the symbol that marks the start of the contribution.
|
||||||
// It is referenced via DW_AT_addr_base.
|
// It is referenced via DW_AT_addr_base.
|
||||||
@ -66,4 +71,7 @@ void AddressPool::emit(AsmPrinter &Asm, MCSection *AddrSection) {
|
|||||||
|
|
||||||
for (const MCExpr *Entry : Entries)
|
for (const MCExpr *Entry : Entries)
|
||||||
Asm.OutStreamer->EmitValue(Entry, Asm.getDataLayout().getPointerSize());
|
Asm.OutStreamer->EmitValue(Entry, Asm.getDataLayout().getPointerSize());
|
||||||
|
|
||||||
|
if (EndLabel)
|
||||||
|
Asm.OutStreamer->EmitLabel(EndLabel);
|
||||||
}
|
}
|
||||||
|
@ -54,7 +54,7 @@ public:
|
|||||||
void setLabel(MCSymbol *Sym) { AddressTableBaseSym = Sym; }
|
void setLabel(MCSymbol *Sym) { AddressTableBaseSym = Sym; }
|
||||||
|
|
||||||
private:
|
private:
|
||||||
void emitHeader(AsmPrinter &Asm, MCSection *Section);
|
MCSymbol *emitHeader(AsmPrinter &Asm, MCSection *Section);
|
||||||
|
|
||||||
/// Symbol designates the start of the contribution to the address table.
|
/// Symbol designates the start of the contribution to the address table.
|
||||||
MCSymbol *AddressTableBaseSym = nullptr;
|
MCSymbol *AddressTableBaseSym = nullptr;
|
||||||
|
@ -1,12 +1,14 @@
|
|||||||
; RUN: llc %s -mtriple=i386-unknown-linux-gnu -filetype=asm -o - | FileCheck %s
|
; RUN: llc %s -mtriple=i386-unknown-linux-gnu -filetype=asm -o - | FileCheck %s
|
||||||
|
|
||||||
; CHECK: .section .debug_addr
|
; CHECK: .section .debug_addr
|
||||||
; CHECK: .long 8 # Length of contribution
|
; CHECK-NEXT: .long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution
|
||||||
; CHECK: .short 5 # DWARF version number
|
; CHECK-NEXT: .Ldebug_addr_start0:
|
||||||
; CHECK: .byte 4 # Address size
|
; CHECK-NEXT: .short 5 # DWARF version number
|
||||||
; CHECK: .byte 0 # Segment selector size
|
; CHECK-NEXT: .byte 4 # Address size
|
||||||
; CHECK: .Laddr_table_base0:
|
; CHECK-NEXT: .byte 0 # Segment selector size
|
||||||
; CHECK: .long .Lfunc_begin0
|
; CHECK-NEXT: .Laddr_table_base0:
|
||||||
|
; CHECK-NEXT: .long .Lfunc_begin0
|
||||||
|
; CHECK-NEXT: .Ldebug_addr_end0:
|
||||||
|
|
||||||
; Function Attrs: noinline nounwind optnone uwtable
|
; Function Attrs: noinline nounwind optnone uwtable
|
||||||
define dso_local void @foo() #0 !dbg !7 {
|
define dso_local void @foo() #0 !dbg !7 {
|
||||||
|
Loading…
Reference in New Issue
Block a user