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https://github.com/c64scene-ar/llvm-6502.git
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6eb3e87df0
Before this patch, when you objdump an LLVM-compiled file, objdump tried to decode data-in-code sections as if they were code. This patch adds the missing Mapping Symbols, as defined by "ELF for the ARM Architecture" (ARM IHI 0044D). Patch based on work by Greg Fitzgerald. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169609 91177308-0d34-0410-b5e6-96231b3b80d8
51 lines
1.9 KiB
LLVM
51 lines
1.9 KiB
LLVM
;; RUN: llc -mtriple=armv7-linux-gnueabi -O3 \
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;; RUN: -mcpu=cortex-a8 -mattr=-neon -mattr=+vfp2 -arm-reserve-r9 \
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;; RUN: -filetype=obj %s -o - | \
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;; RUN: elf-dump --dump-section-data | FileCheck -check-prefix=OBJ %s
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;; FIXME: This file needs to be in .s form!
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;; The args to llc are there to constrain the codegen only.
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;;
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;; Ensure no regression on ARM/gcc compatibility for
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;; emitting explicit symbol relocs for nonexternal symbols
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;; versus section symbol relocs (with offset) -
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;;
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;; Default llvm behavior is to emit as section symbol relocs nearly
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;; everything that is not an undefined external. Unfortunately, this
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;; diverges from what codesourcery ARM/gcc does!
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;;
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;; Tests that reloc to .L.str* show up as explicit symbols
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target triple = "armv7-none-linux-gnueabi"
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@.str = private constant [7 x i8] c"@null\0A\00", align 4
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@.str1 = private constant [8 x i8] c"@write\0A\00", align 4
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@.str2 = private constant [13 x i8] c"hello worldn\00", align 4
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@.str3 = private constant [7 x i8] c"@exit\0A\00", align 4
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declare i32 @mystrlen(i8* nocapture %s) nounwind readonly
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declare void @myhextochar(i32 %n, i8* nocapture %buffer) nounwind
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define i32 @main() nounwind {
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entry:
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%0 = tail call i32 (...)* @write(i32 1, i8* getelementptr inbounds ([7 x i8]* @.str, i32 0, i32 0), i32 6) nounwind
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%1 = tail call i32 (...)* @write(i32 1, i8* getelementptr inbounds ([8 x i8]* @.str1, i32 0, i32 0), i32 7) nounwind
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%2 = tail call i32 (...)* @write(i32 1, i8* getelementptr inbounds ([13 x i8]* @.str2, i32 0, i32 0), i32 12) nounwind
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%3 = tail call i32 (...)* @write(i32 1, i8* getelementptr inbounds ([7 x i8]* @.str3, i32 0, i32 0), i32 6) nounwind
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tail call void @exit(i32 55) noreturn nounwind
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unreachable
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}
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declare i32 @write(...)
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declare void @exit(i32) noreturn nounwind
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;; OBJ: Relocation 0
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;; OBJ-NEXT: 'r_offset',
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;; OBJ-NEXT: 'r_sym', 0x000005
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;; OBJ-NEXT: 'r_type', 0x2b
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;; OBJ: Symbol 5
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;; OBJ-NEXT: '.L.str'
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