[llvm] d22ea5b - [RelocationResolver] Add R_RISCV_SET8

[via llvm-commits]

Author: LiaoChunyu
Date: 2022-09-22T11:49:33+08:00
New Revision: d22ea5be51c41d9d03c3226fe5e3445de0c5b6ac

URL: https://github.com/llvm/llvm-project/commit/d22ea5be51c41d9d03c3226fe5e3445de0c5b6ac
DIFF: https://github.com/llvm/llvm-project/commit/d22ea5be51c41d9d03c3226fe5e3445de0c5b6ac.diff

LOG: [RelocationResolver] Add R_RISCV_SET8

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D134164

Added: 
    llvm/test/MC/RISCV/cfi-advance.s

Modified: 
    llvm/lib/Object/RelocationResolver.cpp

Removed: 
    


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diff  --git a/llvm/lib/Object/RelocationResolver.cpp b/llvm/lib/Object/RelocationResolver.cpp
index d1726053e7d5..e311ff4c2e9f 100644
--- a/llvm/lib/Object/RelocationResolver.cpp
+++ b/llvm/lib/Object/RelocationResolver.cpp
@@ -433,6 +433,7 @@ static bool supportsRISCV(uint64_t Type) {
   case ELF::R_RISCV_32_PCREL:
   case ELF::R_RISCV_64:
   case ELF::R_RISCV_SET6:
+  case ELF::R_RISCV_SET8:
   case ELF::R_RISCV_SUB6:
   case ELF::R_RISCV_ADD8:
   case ELF::R_RISCV_SUB8:
@@ -465,6 +466,8 @@ static uint64_t resolveRISCV(uint64_t Type, uint64_t Offset, uint64_t S,
     return (A & 0xC0) | ((S + RA) & 0x3F);
   case ELF::R_RISCV_SUB6:
     return (A & 0xC0) | (((A & 0x3F) - (S + RA)) & 0x3F);
+  case ELF::R_RISCV_SET8:
+    return (S + RA) & 0xFF;
   case ELF::R_RISCV_ADD8:
     return (A + (S + RA)) & 0xFF;
   case ELF::R_RISCV_SUB8:

diff  --git a/llvm/test/MC/RISCV/cfi-advance.s b/llvm/test/MC/RISCV/cfi-advance.s
new file mode 100644
index 000000000000..8d11e6ec6636
--- /dev/null
+++ b/llvm/test/MC/RISCV/cfi-advance.s
@@ -0,0 +1,19 @@
+# RUN: llvm-mc -filetype=obj -triple riscv32 %s -o %t.o  
+# RUN: llvm-readobj -r %t.o | FileCheck -check-prefix=CHECK %s
+# RUN: llvm-dwarfdump --debug-frame %t.o 2>&1 \
+# RUN:     | FileCheck -check-prefix=CHECK-DWARFDUMP %s
+
+# CHECK: 0x26 R_RISCV_SET8 - 0x0
+# CHECK-DWARFDUMP:   DW_CFA_advance_loc1
+# CHECK-DWARFDUMP-NEXT:  DW_CFA_def_cfa_offset
+        .text
+        .globl  test                            # -- Begin function test
+        .p2align        1
+        .type   test, at function
+test:
+        .cfi_startproc
+        nop
+        .zero 100, 0x90
+        .cfi_def_cfa_offset 8
+        nop
+        .cfi_endproc