Always use v1 for MIPS TLS access.

Change-Id: Ic2850b90185cfbc5b0eff804c8b74a1c553c0852
2013-06-18 13:26:22 -07:00 · 2013-06-18 13:26:22 -07:00 · a33dc57c7c
commit a33dc57c7c
parent 6807af773f
1 changed files with 2 additions and 1 deletions
--- a/libc/private/bionic_tls.h
+++ b/libc/private/bionic_tls.h
@ -89,7 +89,8 @@ extern int __set_tls(void* ptr);
       (volatile void*) __val; })
 #elif defined(__mips__)
 # define __get_tls() \
-    ({ register unsigned int __val; \
+    /* On mips32r1, this goes via a kernel illegal instruction trap that's optimized for v1. */ \
+    ({ register unsigned int __val asm("v1"); \
       asm ("   .set    push\n" \
            "   .set    mips32r2\n" \
            "   rdhwr   %0,$29\n" \