X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fx86-64-assem.S;h=c4f543593fb90962f45082443d01800888c78c98;hb=d94c1b4a8c534bde146823f56558faf37cd4c4d7;hp=8cfd582f71dd77dc63ae8af80908043da4f84fbc;hpb=1cf1afff10cfc48a2f4a26fd4533531081602219;p=sbcl.git

diff --git a/src/runtime/x86-64-assem.S b/src/runtime/x86-64-assem.S
index 8cfd582..c4f5435 100644
--- a/src/runtime/x86-64-assem.S
+++ b/src/runtime/x86-64-assem.S
@@ -25,15 +25,15 @@
 #include "genesis/thread.h"
 	
 /* Minimize conditionalization for different OS naming schemes. */
-#if defined __linux__  || defined __FreeBSD__ /* (but *not* OpenBSD) */
+#if defined __linux__  || defined __FreeBSD__ || defined __OpenBSD__ || defined __NetBSD__ || defined __sun
 #define GNAME(var) var
 #else
 #define GNAME(var) _##var
 #endif
 
-/* Get the right type of alignment. Linux and FreeBSD (but not OpenBSD)
+/* Get the right type of alignment. Linux, FreeBSD and OpenBSD
  * want alignment in bytes. */
-#if defined(__linux__) || defined(__FreeBSD__)
+#if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined __NetBSD__ || defined(__sun)
 #define align_4byte	4
 #define align_8byte	8
 #define align_16byte	16
@@ -67,7 +67,7 @@
  * for this instruction in the SIGILL handler and if we see it, we
  * advance the EIP by two bytes to skip over ud2 instruction and
  * call sigtrap_handler. */
-#if defined(LISP_FEATURE_DARWIN)
+#if defined(LISP_FEATURE_UD2_BREAKPOINTS)
 #define TRAP ud2
 #else
 #define TRAP int3
@@ -105,9 +105,6 @@
 	.globl  GNAME(call_into_c)
 	TYPE(GNAME(call_into_c))
 GNAME(call_into_c):
-        /* ABI requires that the direction flag be clear on function
-         * entry and exit. */
-        cld
 	push	%rbp		# Save old frame pointer.
 	mov	%rsp,%rbp	# Establish new frame.
 
@@ -131,8 +128,7 @@ GNAME(call_into_c):
 	.globl  GNAME(call_into_lisp_first_time)
 	TYPE(GNAME(call_into_lisp_first_time))
 		
-/* The *ALIEN-STACK* pointer is set up on the first call_into_lisp when
- * the stack changes.  We don't worry too much about saving registers 
+/* We don't worry too much about saving registers 
  * here, because we never expect to return from the initial call to lisp 
  * anyway */
 	
@@ -140,16 +136,12 @@ GNAME(call_into_c):
 GNAME(call_into_lisp_first_time):
 	push	%rbp		# Save old frame pointer.
 	mov	%rsp,%rbp	# Establish new frame.
-	mov     %rsp,ALIEN_STACK + SYMBOL_VALUE_OFFSET
 #if defined(LISP_FEATURE_DARWIN)
 	movq    GSYM(GNAME(all_threads)),%rax
 #else
         movq    GNAME(all_threads),%rax
 #endif
-	mov     THREAD_CONTROL_STACK_START_OFFSET(%rax) ,%rsp
-	/* don't think too hard about what happens if we get interrupted
-	* here */
-        add 	$(THREAD_CONTROL_STACK_SIZE)-16,%rsp
+	mov     THREAD_CONTROL_STACK_END_OFFSET(%rax) ,%rsp
 	jmp     Lstack
 
 	.text	
@@ -182,6 +174,10 @@ Lstack:
 	push	%rsi	#
 	push	%rdx	#
 #ifdef LISP_FEATURE_SB_THREAD
+#ifdef LISP_FEATURE_GCC_TLS
+	movq	%fs:0, %rax
+	movq	GNAME(current_thread)@TPOFF(%rax), %r12
+#else
 #ifdef LISP_FEATURE_DARWIN
 	mov	GSYM(GNAME(specials)),%rdi
 #else
@@ -190,6 +186,7 @@ Lstack:
 	call    GNAME(pthread_getspecific)
 	mov	%rax,%r12
 #endif
+#endif
 	pop	%rcx	# num args
 	pop	%rbx	# arg vector
 	pop	%rax	# function ptr/lexenv
@@ -197,7 +194,7 @@ Lstack:
 	xor	%rdx,%rdx	# clear any descriptor registers 
 	xor	%rdi,%rdi	# that we can't be sure we'll 
 	xor	%rsi,%rsi	# initialise properly.  XX do r8-r15 too?
-	shl	$3,%rcx		# (fixnumize num-args)
+	shl	$(N_FIXNUM_TAG_BITS),%rcx	# (fixnumize num-args)
 	cmp	$0,%rcx
 	je	Ldone
 	mov	0(%rbx),%rdx	# arg0
@@ -212,10 +209,10 @@ Ldone:
 	xor	%rbx,%rbx	# available
 
 	/* Alloc new frame. */
-	mov	%rsp,%rbx	# The current sp marks start of new frame.
-	push	%rbp		# fp in save location S0
-	sub	$16,%rsp	# Ensure 3 slots are allocated, one above.
-	mov	%rbx,%rbp	# Switch to new frame.
+	push	%rbp            # Dummy for return address
+	push	%rbp		# fp in save location S1
+	mov	%rsp,%rbp	# The current sp marks start of new frame.
+	sub	$8,%rsp	        # Ensure 3 slots are allocated, two above.
 
 Lcall:
 	call	*CLOSURE_FUN_OFFSET(%rax)
@@ -236,13 +233,9 @@ LsingleValue:
 	pop	%r12
 	pop	%rbx
 
-        /* ABI requires that the direction flag be clear on function
-         * entry and exit. */
-        cld
-        
 /* FIXME Restore the NPX state. */
 
-	/* return value is already in rax where lisp expects it */
+	mov	%rdx,%rax	# c-val
 	leave
 	ret
 	SIZE(GNAME(call_into_lisp))
@@ -251,19 +244,17 @@ LsingleValue:
 	.text
 	.globl 	GNAME(fpu_save)
 	TYPE(GNAME(fpu_save))
-	.align	2,0x90
+	.align	align_16byte,0x90
 GNAME(fpu_save):
-	mov	4(%rsp),%rax
-	fnsave	(%rax)		# Save the NPX state. (resets NPX)
+	fnsave	(%rdi)		# Save the NPX state. (resets NPX)
 	ret
 	SIZE(GNAME(fpu_save))
 
 	.globl 	GNAME(fpu_restore)
 	TYPE(GNAME(fpu_restore))
-	.align	2,0x90
+	.align	align_16byte,0x90
 GNAME(fpu_restore):
-	mov	4(%rsp),%rax
-	frstor	(%rax)		# Restore the NPX state.
+	frstor	(%rdi)		# Restore the NPX state.
 	ret
 	SIZE(GNAME(fpu_restore))
 
@@ -275,6 +266,7 @@ GNAME(fpu_restore):
 	.globl  GNAME(undefined_tramp)
 	TYPE(GNAME(undefined_tramp))
 GNAME(undefined_tramp):
+	pop	8(%rbp)         # Save return PC for backtrace.
 	TRAP
 	.byte	trap_Error
         .byte   2
@@ -352,6 +344,12 @@ GNAME(closure_tramp):
 /*
  * fun-end breakpoint magic
  */
+
+/*
+ * For an explanation of the magic involved in function-end
+ * breakpoints, see the implementation in ppc-assem.S.
+ */
+
 	.text
 	.globl 	GNAME(fun_end_breakpoint_guts)
 	.align	align_16byte
@@ -374,6 +372,7 @@ GNAME(fun_end_breakpoint_guts):
 multiple_value_return:
 	
 	.globl  GNAME(fun_end_breakpoint_trap)
+	.align	align_16byte,0x90
 GNAME(fun_end_breakpoint_trap):
 	TRAP
 	.byte 	trap_FunEndBreakpoint