9920943ea2
In D116573, the relocation behavior of R_RISCV_BRANCH didn't consider that branch instruction like 'bge' has a branch target address which is given as a PC-relative offset, sign-extend and multiplied by 2. Although the target address is a 12-bits number, acctually its range is [-4096, 4094]. This patch fix it. Differential Revision: https://reviews.llvm.org/D118151
38 lines
1.3 KiB
ArmAsm
38 lines
1.3 KiB
ArmAsm
# RUN: rm -rf %t && mkdir -p %t
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# RUN: llvm-mc -triple=riscv64 -filetype=obj \
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# RUN: -o %t/elf_riscv64_branch.o %s
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# RUN: llvm-mc -triple=riscv32 -filetype=obj \
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# RUN: -o %t/elf_riscv32_branch.o %s
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# RUN: llvm-jitlink -noexec \
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# RUN: -slab-allocate 100Kb -slab-address 0xfff00ff4 -slab-page-size 4096 \
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# RUN: -abs external_func_positive_offset=0xfff00ffc -abs external_func_negative_offset=0xfff00000\
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# RUN: -check %s %t/elf_riscv64_branch.o
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# RUN: llvm-jitlink -noexec \
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# RUN: -slab-allocate 100Kb -slab-address 0xfff00ff4 -slab-page-size 4096 \
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# RUN: -abs external_func_positive_offset=0xfff00ffc -abs external_func_negative_offset=0xfff00000 \
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# RUN: -check %s %t/elf_riscv32_branch.o
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#
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.text
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# Empty main entry point.
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.globl main
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.p2align 1
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.type main,@function
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main:
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ret
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.size main, .-main
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# Test R_RISCV_BRANCH
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# jitlink-check: decode_operand(test_branch, 2)[12:0] = (external_func_positive_offset - test_branch)[12:0]
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# jitlink-check: decode_operand(test_branch+4, 2)[12:0] = (external_func_negative_offset - test_branch - 4)[12:0]
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.globl test_branch
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.p2align 1
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.type test_branch,@function
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test_branch:
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bge a0, a1, external_func_positive_offset
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bge a0, a1, external_func_negative_offset
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.size test_branch, .-test_branch
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