X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fx86-linux-os.c;h=e5c389507fd4c93dca713277f9bcc4afff6dd634;hb=422b88abf96f4842a3d0999cd3b80d96f5a153d6;hp=ed7a9e03984fb21d5fcc0d6bef8b55bce60b118e;hpb=68fd2d2dd6f265669a8957accd8a33e62786a97e;p=sbcl.git

diff --git a/src/runtime/x86-linux-os.c b/src/runtime/x86-linux-os.c
index ed7a9e0..e5c3895 100644
--- a/src/runtime/x86-linux-os.c
+++ b/src/runtime/x86-linux-os.c
@@ -67,13 +67,26 @@ os_context_register_addr(os_context_t *context, int offset)
 os_context_register_t *
 os_context_pc_addr(os_context_t *context)
 {
-    return &context->uc_mcontext.gregs[14];
+    return &context->uc_mcontext.gregs[14]; /*  REG_EIP */
 }
 
 os_context_register_t *
 os_context_sp_addr(os_context_t *context)
+{				
+    return &context->uc_mcontext.gregs[17]; /* REG_UESP */
+}
+
+os_context_register_t *
+os_context_fp_addr(os_context_t *context)
+{
+    return &context->uc_mcontext.gregs[6]; /* REG_EBP */
+}
+
+unsigned long
+os_context_fp_control(os_context_t *context)
 {
-    return &context->uc_mcontext.gregs[17];
+    return ((((context->uc_mcontext.fpregs->cw) & 0xffff) ^ 0x3f) |
+	    (((context->uc_mcontext.fpregs->sw) & 0xffff) << 16));
 }
 
 sigset_t *
@@ -83,6 +96,12 @@ os_context_sigmask_addr(os_context_t *context)
 }
 
 void
+os_restore_fp_control(os_context_t *context)
+{
+    asm ("fldcw %0" : : "m" (context->uc_mcontext.fpregs->cw));
+}
+
+void
 os_flush_icache(os_vm_address_t address, os_vm_size_t length)
 {
 }