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llvm-project/lld/test/COFF/loadcfg.ll

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COFF: When resolving _load_config_used, add it as a GC root. This fixes the cases where the symbol is defined in a comdat or by bitcode. Differential Revision: http://reviews.llvm.org/D11673 llvm-svn: 243735
2015-07-31 13:33:34 +08:00
; RUN: llvm-as -o %t.obj %s
COFF: Make test commands shorter. NFC. llvm-svn: 244227
2015-08-07 00:47:46 +08:00
; RUN: lld-link /out:%t.exe %t.obj /entry:main /subsystem:console
COFF: When resolving _load_config_used, add it as a GC root. This fixes the cases where the symbol is defined in a comdat or by bitcode. Differential Revision: http://reviews.llvm.org/D11673 llvm-svn: 243735
2015-07-31 13:33:34 +08:00
; RUN: llvm-readobj -file-headers %t.exe | FileCheck %s
; CHECK: LoadConfigTableRVA: 0x1000
; CHECK: LoadConfigTableSize: 0x70
target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc"
[COFF] Don't hard-code the load configuration size The load configuration directory is a structure whose size varies as the OS gains additional functionality. To account for this, the structure's layout begins with a size field; this allows loaders to know which fields are available. However, LLD hard-coded the sizes (112 bytes for 64-bit and 64 for 32-bit). This means that we might not inform the loader of all the pertinent fields or we might claim that there are more fields than are actually present. To correctly account for this, the size field must be loaded from the _load_config_used symbol. N.B. The COFF spec is either wrong or out of date, the load configuration directory is not correctly documented in the specification: it omits the size field. llvm-svn: 263543
2016-03-15 17:48:27 +08:00
@_load_config_used = constant [28 x i32] [i32 112, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0]
COFF: When resolving _load_config_used, add it as a GC root. This fixes the cases where the symbol is defined in a comdat or by bitcode. Differential Revision: http://reviews.llvm.org/D11673 llvm-svn: 243735
2015-07-31 13:33:34 +08:00
define void @main() {
ret void
}