1.0.26.6: use private operations on futexes

[sbcl.git] / src / runtime / x86-64-arch.c

diff --git a/src/runtime/x86-64-arch.c b/src/runtime/x86-64-arch.c
index 84082a0..75432d0 100644 (file)
--- a/src/runtime/x86-64-arch.c
+++ b/src/runtime/x86-64-arch.c
@@ -25,6 +25,7 @@
 #include "interr.h"
 #include "breakpoint.h"
 #include "thread.h"
+#include "pseudo-atomic.h"
 
 #include "genesis/static-symbols.h"
 #include "genesis/symbol.h"
@@ -63,7 +64,7 @@ context_eflags_addr(os_context_t *context)
 #elif defined __FreeBSD__
     return &context->uc_mcontext.mc_rflags;
 #elif defined LISP_FEATURE_DARWIN
-    return &context->uc_mcontext->ss.rflags;
+    return CONTEXT_ADDR_FROM_STEM(rflags);
 #elif defined __OpenBSD__
     return &context->sc_eflags;
 #else
@@ -229,10 +230,8 @@ arch_handle_single_step_trap(os_context_t *context, int trap)
 
 \f
 void
-sigtrap_handler(int signal, siginfo_t *info, void *void_context)
+sigtrap_handler(int signal, siginfo_t *info, os_context_t *context)
 {
-    int code = info->si_code;
-    os_context_t *context = (os_context_t*)void_context;
     unsigned int trap;
 
     if (single_stepping && (signal==SIGTRAP))
@@ -263,16 +262,6 @@ sigtrap_handler(int signal, siginfo_t *info, void *void_context)
     current_control_stack_pointer =
         (lispobj *)*os_context_sp_addr(context);
 
-    /* FIXME: CMUCL puts the float control restoration code here.
-       Thus, it seems to me that single-stepping won't restore the
-       float control.  Since SBCL currently doesn't support
-       single-stepping (as far as I can tell) this is somewhat moot,
-       but it might be worth either moving this code up or deleting
-       the single-stepping code entirely.  -- CSR, 2002-07-15 */
-#if defined(LISP_FEATURE_LINUX) || defined(RESTORE_FP_CONTROL_FROM_CONTEXT)
-    os_restore_fp_control(context);
-#endif
-
     /* On entry %eip points just after the INT3 byte and aims at the
      * 'kind' value (eg trap_Cerror). For error-trap and Cerror-trap a
      * number of bytes will follow, the first is the length of the byte
@@ -283,16 +272,14 @@ sigtrap_handler(int signal, siginfo_t *info, void *void_context)
 }
 
 void
-sigill_handler(int signal, siginfo_t *siginfo, void *void_context) {
-    os_context_t *context = (os_context_t*)void_context;
-
+sigill_handler(int signal, siginfo_t *siginfo, os_context_t *context) {
     /* Triggering SIGTRAP using int3 is unreliable on OS X/x86, so
      * we need to use illegal instructions for traps.
      */
 #if defined(LISP_FEATURE_DARWIN) && !defined(LISP_FEATURE_MACH_EXCEPTION_HANDLER)
     if (*((unsigned short *)*os_context_pc_addr(context)) == 0x0b0f) {
         *os_context_pc_addr(context) += 2;
-        return sigtrap_handler(signal, siginfo, void_context);
+        return sigtrap_handler(signal, siginfo, context);
     }
 #endif
 
@@ -334,9 +321,8 @@ mxcsr_to_code(unsigned int mxcsr)
 }
 
 static void
-sigfpe_handler(int signal, siginfo_t *siginfo, void *void_context)
+sigfpe_handler(int signal, siginfo_t *siginfo, os_context_t *context)
 {
-    os_context_t *context = arch_os_get_context(&void_context);
     unsigned int *mxcsr = arch_os_context_mxcsr_addr(context);
 
     if (siginfo->si_code == 0) { /* XMM exception */