[lld][Hexagon]Support HEX_32 when building shared objects

Differential Revision: https://reviews.llvm.org/D66105 llvm-svn: 369121
llvm · Aug 16, 2019 · 2d3ebeb · 2d3ebeb
1 parent 05e9c2a
commit 2d3ebeb
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Showing 2 changed files with 29 additions and 3 deletions.
diff --git a/lld/ELF/Arch/Hexagon.cpp b/lld/ELF/Arch/Hexagon.cpp
@@ -29,6 +29,7 @@ class Hexagon final : public TargetInfo {
   uint32_t calcEFlags() const override;
   RelExpr getRelExpr(RelType type, const Symbol &s,
                      const uint8_t *loc) const override;
+  RelType getDynRel(RelType type) const override;
   void relocateOne(uint8_t *loc, RelType type, uint64_t val) const override;
   void writePltHeader(uint8_t *buf) const override;
   void writePlt(uint8_t *buf, uint64_t gotPltEntryAddr, uint64_t pltEntryAddr,
@@ -285,6 +286,12 @@ void Hexagon::writePlt(uint8_t *buf, uint64_t gotPltEntryAddr,
   relocateOne(buf + 4, R_HEX_6_PCREL_X, gotPltEntryAddr - pltEntryAddr);
 }
 
+RelType Hexagon::getDynRel(RelType type) const {
+  if (type == R_HEX_32)
+    return type;
+  return R_HEX_NONE;
+}
+
 TargetInfo *elf::getHexagonTargetInfo() {
   static Hexagon target;
   return &target;

diff --git a/lld/test/ELF/hexagon-shared.s b/lld/test/ELF/hexagon-shared.s
@@ -6,6 +6,7 @@
 # RUN: llvm-objdump -d -j .plt %t4.so | FileCheck --check-prefix=PLT %s
 # RUN: llvm-objdump -d -j .text %t4.so | FileCheck --check-prefix=TEXT %s
 # RUN: llvm-objdump -D -j .got %t4.so | FileCheck --check-prefix=GOT %s
+# RUN: llvm-readelf -r  %t4.so | FileCheck --check-prefix=RELO %s
 
 .global foo
 foo:
@@ -25,22 +26,40 @@ jumpr r0
 # R_HEX_GOT_16_X
 r0 = add(r1,##bar@GOT)
 
+# R_HEX_32
+.data
+.global var
+.type var,@object
+.p2align 2
+var:
+   .word 10
+   .size var, 4
+.global pvar
+.type pvar,@object
+pvar:
+   .word var
+   .size pvar, 4
+
 # PLT: { immext(#131008
-# PLT: r28 = add(pc,##131024) }
+# PLT: r28 = add(pc,##131032) }
 # PLT: { r14 -= add(r28,#16)
 # PLT: r15 = memw(r28+#8)
 # PLT: r28 = memw(r28+#4) }
 # PLT: { r14 = asr(r14,#2)
 # PLT: jumpr r28 }
 # PLT: { trap0(#219) }
 # PLT: immext(#131008)
-# PLT: r14 = add(pc,##131008) }
+# PLT: r14 = add(pc,##131016) }
 # PLT: r28 = memw(r14+#0) }
 # PLT: jumpr r28 }
 
 # TEXT:  10000: 00 00 01 00 00010000
 # TEXT: { 	call 0x10050 }
-# TEXT: r0 = add(r1,##-65408) }
+# TEXT: r0 = add(r1,##-65416) }
 
 # GOT: .got:
 # GOT: 20080:	00 00 00 00 00000000 <unknown>
+
+# RELO: 00020080  00000121 R_HEX_GLOB_DAT
+# RELO: 00030004  00000406 R_HEX_32
+# RELO: 00030018  00000122 R_HEX_JMP_SLOT