xnu-792.25.20.tar.gz

[apple/xnu.git] / osfmk / ppc / _setjmp.s

diff --git a/osfmk/ppc/_setjmp.s b/osfmk/ppc/_setjmp.s
index c8a40b93dd7bd625989e671c50d1b353311df250..cfe3d05cffab5289b3d8fe59bb2cf37fc78e5255 100644 (file)
--- a/osfmk/ppc/_setjmp.s
+++ b/osfmk/ppc/_setjmp.s
@@ -81,8 +81,8 @@ ENTRY(_setjmp,TAG_NO_FRAME_USED)
        stw     r0,    88(ARG0)  /* Fixed point exception register */
 
 #if FLOATING_POINT_SUPPORT     /* TODO NMGS probably not needed for kern */ 
-       mffs    r0
-       stw     r0,    92(ARG0)  /* Floating point status register */
+       mffs    f0                              /* get FPSCR in low 32 bits of f0 */
+       stfiwx  f0,    92(ARG0)  /* Floating point status register */
 
        stfd    f14,   96(ARG0)  /* Floating point context - 8 byte aligned */
        stfd    f15,  104(ARG0)
@@ -153,8 +153,8 @@ ENTRY(_longjmp, TAG_NO_FRAME_USED)  /* TODO NMGS - need correct tag */
        mtxer   r0
 
 #ifdef FLOATING_POINT_SUPPORT
-       lwz     r0,    92(ARG0)  /* Floating point status register */
-       mtfs    r0
+       lfd     f0,  92-4(ARG0)  /* get Floating point status register in low 32 bits of f0 */
+       mtfsf    0xFF,f0         /* restore FPSCR */
 
        lfd     f14,   96(ARG0)  /* Floating point context - 8 byte aligned */
        lfd     f15,  104(ARG0)