[libc-commits] [PATCH] D159110: [libc] Fix set_thread_ptr call in rv32 start up code

[Mikhail Ramalho via Phabricator via libc-commits]

mikhail.ramalho created this revision.
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This patch changes the instruction in set_thread_ptr from ld (load
doubleword) to lw (load word), as rv32 doesn't have the ld instruction.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D159110

Files:
  libc/startup/linux/riscv/start.cpp


Index: libc/startup/linux/riscv/start.cpp
===================================================================
--- libc/startup/linux/riscv/start.cpp
+++ libc/startup/linux/riscv/start.cpp
@@ -80,7 +80,11 @@
 }
 
 static void set_thread_ptr(uintptr_t val) {
+#ifdef LIBC_TARGET_ARCH_IS_RISCV32
+  LIBC_INLINE_ASM("lw tp, %0\n\t" : : "m"(val));
+#else // LIBC_TARGET_ARCH_IS_RISCV64
   LIBC_INLINE_ASM("ld tp, %0\n\t" : : "m"(val));
+#endif
 }
 
 using InitCallback = void(int, char **, char **);


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