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author"Steven J. Hill" <sjhill@realitydiluted.com>2002-09-10 19:50:47 +0000
committer"Steven J. Hill" <sjhill@realitydiluted.com>2002-09-10 19:50:47 +0000
commitba7f440e196c36a3a7b0a36893b1c0465b1ec94d (patch)
treeb48e33bda6bdf1882b526632e7fd27aec6e2c613 /libc
parent431fc6465d32db324360e947bb55cf972e85cf84 (diff)
Don't unconditionally save/restore FP registers, we might be doing soft
floating point. Thanks to Jay Carlson.
Diffstat (limited to 'libc')
-rw-r--r--libc/sysdeps/linux/mips/__longjmp.c2
-rw-r--r--libc/sysdeps/linux/mips/setjmp_aux.c2
2 files changed, 4 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/mips/__longjmp.c b/libc/sysdeps/linux/mips/__longjmp.c
index 750a71fd1..ba0498480 100644
--- a/libc/sysdeps/linux/mips/__longjmp.c
+++ b/libc/sysdeps/linux/mips/__longjmp.c
@@ -38,6 +38,7 @@ __longjmp (env, val_arg)
register int val asm ("a1");
/* Pull back the floating point callee-saved registers. */
+#ifndef __mips_soft_float
asm volatile ("l.d $f20, %0" : : "m" (env[0].__fpregs[0]));
asm volatile ("l.d $f22, %0" : : "m" (env[0].__fpregs[1]));
asm volatile ("l.d $f24, %0" : : "m" (env[0].__fpregs[2]));
@@ -48,6 +49,7 @@ __longjmp (env, val_arg)
/* Get and reconstruct the floating point csr. */
asm volatile ("lw $2, %0" : : "m" (env[0].__fpc_csr));
asm volatile ("ctc1 $2, $31");
+#endif
/* Get the GP. */
asm volatile ("lw $gp, %0" : : "m" (env[0].__gp));
diff --git a/libc/sysdeps/linux/mips/setjmp_aux.c b/libc/sysdeps/linux/mips/setjmp_aux.c
index b957cea33..21164dbc8 100644
--- a/libc/sysdeps/linux/mips/setjmp_aux.c
+++ b/libc/sysdeps/linux/mips/setjmp_aux.c
@@ -29,6 +29,7 @@ extern int __sigjmp_save (sigjmp_buf, int);
int
__sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp)
{
+#ifndef __mips_soft_float
/* Store the floating point callee-saved registers... */
asm volatile ("s.d $f20, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[0]));
asm volatile ("s.d $f22, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[1]));
@@ -36,6 +37,7 @@ __sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp)
asm volatile ("s.d $f26, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[3]));
asm volatile ("s.d $f28, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[4]));
asm volatile ("s.d $f30, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[5]));
+#endif
/* .. and the PC; */
asm volatile ("sw $31, %0" : : "m" (env[0].__jmpbuf[0].__pc));