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llvm-project/lld/test/ELF/arm-sbrel32.s

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[ELF] Move `// REQUIRES:` line to the top llvm-svn: 335676
2018-06-27 06:20:04 +08:00
// REQUIRES: arm
[ARM][test] Improve tests Delete trailing 2>&1 that is not piped to another command. Add --no-show-raw-insn to objdump -d commands. llvm-svn: 366676
2019-07-22 19:37:03 +08:00
// RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t.o
// RUN: ld.lld %t.o -o %t
// RUN: llvm-objdump -d -triple=armv7a-none-linux-gnueabi %t | FileCheck %s
[ELF] Support R_ARM_SBREL32 Relocation This change adds support for the R_ARM_SBREL32 relocation. The relocation is a base relative relocation that is produced by clang/llvm when -frwpi is used. The use case for the -frwpi option is position independent data for embedded systems that do not have a GOT. With -frwpi all data is accessed via an offset from a base register (usually r9), where r9 is set at run time to where the data has been loaded. The base of the data is known as the static base. The ARM ABI defines the static base as: B(S) is the addressing origin of the output segment defining the symbol S. The origin is not required to be the base address of the segment. For simplicity we choose to use the base address of the segment. The ARM procedure call standard only defines a read write variant using R_ARM_SBREL32 relocations. The read-only data is accessed via pc-relative offsets from the code, this is implemented in clang as -fropi. Fixes PR32924 Differential Revision: https://reviews.llvm.org/D33280 llvm-svn: 303337
2017-05-18 17:12:21 +08:00
// Test the R_ARM_SBREL32 relocation which calculates the offset of the Symbol
// from the static base. We define the static base to be the address of the
// segment containing the symbol
.text
.syntax unified
.globl _start
.p2align 2
.type _start,%function
_start:
.fnstart
bx lr
.long foo(sbrel)
.long foo2(sbrel)
.long foo3(sbrel)
.long foo4(sbrel)
// RW segment starts here
.data
.p2align 4
foo: .word 10
foo2: .word 20
.bss
foo3: .space 4
foo4: .space 4
// CHECK: Disassembly of section .text:
[llvm-objdump] Print newlines before and after "Disassembly of section ...:" This improves readability and the behavior is consistent with GNU objdump. The new test test/tools/llvm-objdump/X86/disassemble-section-name.s checks we print newlines before and after "Disassembly of section ...:" Differential Revision: https://reviews.llvm.org/D61127 llvm-svn: 359668
2019-05-01 18:40:48 +08:00
// CHECK-EMPTY:
[ELF] Support R_ARM_SBREL32 Relocation This change adds support for the R_ARM_SBREL32 relocation. The relocation is a base relative relocation that is produced by clang/llvm when -frwpi is used. The use case for the -frwpi option is position independent data for embedded systems that do not have a GOT. With -frwpi all data is accessed via an offset from a base register (usually r9), where r9 is set at run time to where the data has been loaded. The base of the data is known as the static base. The ARM ABI defines the static base as: B(S) is the addressing origin of the output segment defining the symbol S. The origin is not required to be the base address of the segment. For simplicity we choose to use the base address of the segment. The ARM procedure call standard only defines a read write variant using R_ARM_SBREL32 relocations. The read-only data is accessed via pc-relative offsets from the code, this is implemented in clang as -fropi. Fixes PR32924 Differential Revision: https://reviews.llvm.org/D33280 llvm-svn: 303337
2017-05-18 17:12:21 +08:00
// CHECK-NEXT: _start:
[ELF][ARM] Allow PT_LOAD to have overlapping p_offset ranges on EM_ARM Port the D64906 technique to ARM. It deletes 3 alignments at PT_LOAD boundaries for the default case: the size of an arm binary decreases by at most 12kb. Reviewed By: grimar Differential Revision: https://reviews.llvm.org/D66749 llvm-svn: 370049
2019-08-27 19:52:36 +08:00
// CHECK-NEXT: 110d4: 1e ff 2f e1 bx lr
// CHECK: 110d8: 00 00 00 00 .word 0x00000000
// CHECK-NEXT: 110dc: 04 00 00 00 .word 0x00000004
// CHECK-NEXT: 110e0: 08 00 00 00 .word 0x00000008
// CHECK-NEXT: 110e4: 0c 00 00 00 .word 0x0000000c