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[WebAssembly] Support R_WASM_MEMORY_ADDR_TLS_SLEB64 for wasm64

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Also fixed TLS tests swapping addr & value in store op
Differential Revision: https://reviews.llvm.org/D106096
This commit is contained in:
Wouter van Oortmerssen 2021-07-15 13:24:28 -07:00
parent fa61017019
commit 8a42745952
7 changed files with 87 additions and 4 deletions
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1
include/llvm/BinaryFormat/WasmRelocs.def
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@ -27,3 +27,4 @@ WASM_RELOC(R_WASM_MEMORY_ADDR_TLS_SLEB, 21)
WASM_RELOC(R_WASM_FUNCTION_OFFSET_I64, 22)
WASM_RELOC(R_WASM_MEMORY_ADDR_LOCREL_I32, 23)
WASM_RELOC(R_WASM_TABLE_INDEX_REL_SLEB64, 24)
WASM_RELOC(R_WASM_MEMORY_ADDR_TLS_SLEB64, 25)

1
lib/BinaryFormat/Wasm.cpp
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@ -49,6 +49,7 @@ bool llvm::wasm::relocTypeHasAddend(uint32_t Type) {
case R_WASM_MEMORY_ADDR_I32:
case R_WASM_MEMORY_ADDR_I64:
case R_WASM_MEMORY_ADDR_TLS_SLEB:
case R_WASM_MEMORY_ADDR_TLS_SLEB64:
case R_WASM_FUNCTION_OFFSET_I32:
case R_WASM_FUNCTION_OFFSET_I64:
case R_WASM_SECTION_OFFSET_I32:

2
lib/MC/WasmObjectWriter.cpp
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@ -633,6 +633,7 @@ WasmObjectWriter::getProvisionalValue(const WasmRelocationEntry &RelEntry,
case wasm::R_WASM_MEMORY_ADDR_I32:
case wasm::R_WASM_MEMORY_ADDR_I64:
case wasm::R_WASM_MEMORY_ADDR_TLS_SLEB:
case wasm::R_WASM_MEMORY_ADDR_TLS_SLEB64:
case wasm::R_WASM_MEMORY_ADDR_LOCREL_I32: {
// Provisional value is address of the global plus the offset
// For undefined symbols, use zero
@ -748,6 +749,7 @@ void WasmObjectWriter::applyRelocations(
case wasm::R_WASM_TABLE_INDEX_REL_SLEB64:
case wasm::R_WASM_MEMORY_ADDR_SLEB64:
case wasm::R_WASM_MEMORY_ADDR_REL_SLEB64:
case wasm::R_WASM_MEMORY_ADDR_TLS_SLEB64:
writePatchableSLEB<10>(Stream, Value, Offset);
break;
default:

1
lib/Object/WasmObjectFile.cpp
View File

@ -919,6 +919,7 @@ Error WasmObjectFile::parseRelocSection(StringRef Name, ReadContext &Ctx) {
case wasm::R_WASM_MEMORY_ADDR_SLEB64:
case wasm::R_WASM_MEMORY_ADDR_I64:
case wasm::R_WASM_MEMORY_ADDR_REL_SLEB64:
case wasm::R_WASM_MEMORY_ADDR_TLS_SLEB64:
if (!isValidDataSymbol(Reloc.Index))
return make_error<GenericBinaryError>("invalid relocation data index",
object_error::parse_failed);

3
lib/Target/WebAssembly/MCTargetDesc/WebAssemblyWasmObjectWriter.cpp
View File

@ -79,7 +79,8 @@ unsigned WebAssemblyWasmObjectWriter::getRelocType(const MCValue &Target,
return is64Bit() ? wasm::R_WASM_TABLE_INDEX_REL_SLEB64
: wasm::R_WASM_TABLE_INDEX_REL_SLEB;
case MCSymbolRefExpr::VK_WASM_TLSREL:
return wasm::R_WASM_MEMORY_ADDR_TLS_SLEB;
return is64Bit() ? wasm::R_WASM_MEMORY_ADDR_TLS_SLEB64
: wasm::R_WASM_MEMORY_ADDR_TLS_SLEB;
case MCSymbolRefExpr::VK_WASM_MBREL:
assert(SymA.isData());
return is64Bit() ? wasm::R_WASM_MEMORY_ADDR_REL_SLEB64

7
test/MC/WebAssembly/tls.s
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@ -9,11 +9,12 @@ tls_store:
# CHECK: global.get __tls_base
# CHECK-NEXT: i32.const tls1@TLSREL
# CHECK-NEXT: i32.add
# CHECK-NEXT: local.get 0
# CHECK-NEXT: i32.store 0
local.get 0
global.get __tls_base
i32.const tls1@TLSREL
i32.add
local.get 0
i32.store 0
end_function
@ -33,10 +34,10 @@ tls2:
# CHECK-OBJ-NEXT: Relocations:
# CHECK-OBJ-NEXT: - Type: R_WASM_GLOBAL_INDEX_LEB
# CHECK-OBJ-NEXT: Index: 1
# CHECK-OBJ-NEXT: Offset: 0x6
# CHECK-OBJ-NEXT: Offset: 0x4
# CHECK-OBJ-NEXT: - Type: R_WASM_MEMORY_ADDR_TLS_SLEB
# CHECK-OBJ-NEXT: Index: 2
# CHECK-OBJ-NEXT: Offset: 0xC
# CHECK-OBJ-NEXT: Offset: 0xA
# CHECK-OBJ: - Type: CUSTOM
# CHECK-OBJ-NEXT: Name: linking

76
test/MC/WebAssembly/tls64.s Normal file
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@ -0,0 +1,76 @@
# RUN: llvm-mc -triple=wasm64-unknown-unknown < %s | FileCheck %s
# RUN: llvm-mc -triple=wasm64-unknown-unknown -filetype=obj -o %t.o < %s
# RUN: obj2yaml %t.o | FileCheck %s --check-prefix=CHECK-OBJ --match-full-lines
.globaltype __tls_base, i64
tls_store:
.functype tls_store (i32) -> ()
# CHECK: global.get __tls_base
# CHECK-NEXT: i64.const tls1@TLSREL
# CHECK-NEXT: i64.add
# CHECK-NEXT: local.get 0
# CHECK-NEXT: i32.store 0
global.get __tls_base
i64.const tls1@TLSREL
i64.add
local.get 0
i32.store 0
end_function
.section .tls.foo,"T",@
# CHECK: .tls.foo,"T",@
tls1:
.int32 42
.size tls1, 4
.section custom_tls,"T",@
# CHECK: custom_tls,"T",@
tls2:
.int32 43
.size tls2, 4
# CHECK-OBJ: - Type: CODE
# CHECK-OBJ-NEXT: Relocations:
# CHECK-OBJ-NEXT: - Type: R_WASM_GLOBAL_INDEX_LEB
# CHECK-OBJ-NEXT: Index: 1
# CHECK-OBJ-NEXT: Offset: 0x4
# CHECK-OBJ-NEXT: - Type: R_WASM_MEMORY_ADDR_TLS_SLEB64
# CHECK-OBJ-NEXT: Index: 2
# CHECK-OBJ-NEXT: Offset: 0xA
# CHECK-OBJ: - Type: CUSTOM
# CHECK-OBJ-NEXT: Name: linking
# CHECK-OBJ-NEXT: Version: 2
# CHECK-OBJ-NEXT: SymbolTable:
# CHECK-OBJ-NEXT: - Index: 0
# CHECK-OBJ-NEXT: Kind: FUNCTION
# CHECK-OBJ-NEXT: Name: tls_store
# CHECK-OBJ-NEXT: Flags: [ BINDING_LOCAL ]
# CHECK-OBJ-NEXT: Function: 0
# CHECK-OBJ-NEXT: - Index: 1
# CHECK-OBJ-NEXT: Kind: GLOBAL
# CHECK-OBJ-NEXT: Name: __tls_base
# CHECK-OBJ-NEXT: Flags: [ UNDEFINED ]
# CHECK-OBJ-NEXT: Global: 0
# CHECK-OBJ-NEXT: - Index: 2
# CHECK-OBJ-NEXT: Kind: DATA
# CHECK-OBJ-NEXT: Name: tls1
# CHECK-OBJ-NEXT: Flags: [ BINDING_LOCAL ]
# CHECK-OBJ-NEXT: Segment: 0
# CHECK-OBJ-NEXT: Size: 4
# CHECK-OBJ-NEXT: - Index: 3
# CHECK-OBJ-NEXT: Kind: DATA
# CHECK-OBJ-NEXT: Name: tls2
# CHECK-OBJ-NEXT: Flags: [ BINDING_LOCAL ]
# CHECK-OBJ-NEXT: Segment: 1
# CHECK-OBJ-NEXT: Size: 4
# CHECK-OBJ-NEXT: SegmentInfo:
# CHECK-OBJ-NEXT: - Index: 0
# CHECK-OBJ-NEXT: Name: .tls.foo
# CHECK-OBJ-NEXT: Alignment: 0
# CHECK-OBJ-NEXT: Flags: [ TLS ]
# CHECK-OBJ-NEXT: - Index: 1
# CHECK-OBJ-NEXT: Name: custom_tls
# CHECK-OBJ-NEXT: Alignment: 0
# CHECK-OBJ-NEXT: Flags: [ TLS ]