X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fx86-sunos-os.c;h=4569063d7a0d7946f76bed4d9a426c8f157d3c40;hb=f35f14479a64dd97f93d2d91dc154bdc141d6842;hp=fd11cf5e6d20725582dab6c466e963c05f9b00c8;hpb=6d94caa24f68a3df5ac73e7072cea3e62e9d87f5;p=sbcl.git

diff --git a/src/runtime/x86-sunos-os.c b/src/runtime/x86-sunos-os.c
index fd11cf5..4569063 100644
--- a/src/runtime/x86-sunos-os.c
+++ b/src/runtime/x86-sunos-os.c
@@ -79,3 +79,14 @@ os_context_sigmask_addr(os_context_t *context)
 void os_flush_icache(os_vm_address_t address, os_vm_size_t length)
 {
 }
+
+unsigned long
+os_context_fp_control(os_context_t *context)
+{
+    int *state = context->uc_mcontext.fpregs.fp_reg_set.fpchip_state.state;
+    /* The STATE array is in the format used by the x86 instruction FNSAVE,
+     * so the FPU control word is in the first 16 bits */
+    int cw = (state[0] & 0xffff);
+    int sw = context->uc_mcontext.fpregs.fp_reg_set.fpchip_state.status;
+    return (cw ^ 0x3f) | (sw << 16);
+}