X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fx86-64-darwin-os.c;h=00da75f45026237483c4e10488e3e30626774480;hb=922fe0d6da0e4bdcd366f5101395670aabd14e62;hp=046a12500623b82c383384ff771119f00ec8f6c5;hpb=a96167c44596bf4e549b514dd3fd8880081510da;p=sbcl.git

diff --git a/src/runtime/x86-64-darwin-os.c b/src/runtime/x86-64-darwin-os.c
index 046a125..00da75f 100644
--- a/src/runtime/x86-64-darwin-os.c
+++ b/src/runtime/x86-64-darwin-os.c
@@ -119,8 +119,18 @@ void align_context_stack(x86_thread_state64_t *context)
  * the old ESP value and other register state when activated.  The
  * first part of this is the recovery trampoline, which loads ESP from
  * EBP, pops EBP, and returns. */
-asm(".globl _stack_allocation_recover; .align 4; _stack_allocation_recover: mov %rbp, %rsp; pop %rsi; pop %rdi; pop \
-%rdx; pop %rcx; pop %r8; pop %r9; pop %rbp; ret;");
+asm(".globl _stack_allocation_recover; \
+    .align 4; \
+ _stack_allocation_recover: \
+    lea -48(%rbp), %rsp; \
+    pop %rsi; \
+    pop %rdi; \
+    pop %rdx; \
+    pop %rcx; \
+    pop %r8; \
+    pop %r9; \
+    pop %rbp; \
+    ret;");
 
 void open_stack_allocation(x86_thread_state64_t *context)
 {
@@ -128,6 +138,7 @@ void open_stack_allocation(x86_thread_state64_t *context)
 
     push_context(context->rip, context);
     push_context(context->rbp, context);
+    context->rbp = context->rsp;
 
     push_context(context->r9, context);
     push_context(context->r8, context);
@@ -136,7 +147,6 @@ void open_stack_allocation(x86_thread_state64_t *context)
     push_context(context->rsi, context);
     push_context(context->rdi, context);
 
-    context->rbp = context->rsp;
     context->rip = (u64) stack_allocation_recover;
 
     align_context_stack(context);
@@ -233,7 +243,7 @@ void signal_emulation_wrapper(x86_thread_state64_t *thread_state,
 
     build_fake_signal_context(context, thread_state, float_state);
 
-    block_blockable_signals();
+    block_blockable_signals(0, 0);
 
     handler(signal, siginfo, context);
 
@@ -352,8 +362,7 @@ catch_exception_raise(mach_port_t exception_port,
              * protection so the error handler has some headroom, protect the
              * previous page so that we can catch returns from the guard page
              * and restore it. */
-            protect_control_stack_guard_page(0, th);
-            protect_control_stack_return_guard_page(1, th);
+            lower_thread_control_stack_guard_page(th);
 
             backup_thread_state = thread_state;
             open_stack_allocation(&thread_state);
@@ -394,8 +403,7 @@ catch_exception_raise(mach_port_t exception_port,
              * unprotect this one. This works even if we somehow missed
              * the return-guard-page, and hit it on our way to new
              * exhaustion instead. */
-            protect_control_stack_guard_page(1, th);
-            protect_control_stack_return_guard_page(0, th);
+            reset_thread_control_stack_guard_page(th);
         }
         else if (addr >= undefined_alien_address &&
                  addr < undefined_alien_address + os_vm_page_size) {