From 6b452bafaec498df975ba8ac4c99de174e5f74f7 Mon Sep 17 00:00:00 2001
From: Landon Fuller <landonf@bikemonkey.org>
Date: Sat, 18 Sep 2010 16:21:32 -0700
Subject: [PATCH] Apple assembler support; fixed most gas/ELF-isms.

---
 src/arm/sysv.S | 47 +++++++++++++++++++++++++++--------------------
 1 file changed, 27 insertions(+), 20 deletions(-)

diff --git a/src/arm/sysv.S b/src/arm/sysv.S
index 5ffb1019..2593c48b 100644
--- a/src/arm/sysv.S
+++ b/src/arm/sysv.S
@@ -39,7 +39,11 @@
 #else
 #define CNAME(x) x
 #endif
+#ifdef __APPLE__
+#define ENTRY(x) .globl CNAME(x); CNAME(x):
+#else
 #define ENTRY(x) .globl CNAME(x); .type CNAME(x),%function; CNAME(x):
+#endif /* __APPLE__ */
 #endif
 
 #ifdef __ELF__
@@ -111,43 +115,37 @@
 	.align 0
 	.thumb
 	.thumb_func
+#ifdef __APPLE__
+	ENTRY($0)
+#else
 	ENTRY(\name)
+#endif
 	bx	pc
 	nop
 	.arm
 	UNWIND .fnstart
 /* A hook to tell gdb that we've switched to ARM mode.  Also used to call
    directly from other local arm routines.  */
-_L__\name:		
+#ifdef __APPLE__
+_L__$0:
+#else
+_L__\name:
+#endif
 .endm
 #else
 .macro	ARM_FUNC_START name
 	.text
 	.align 0
 	.arm
+#ifdef __APPLE__
+	ENTRY($0)
+#else
 	ENTRY(\name)
+#endif
 	UNWIND .fnstart
 .endm
 #endif
 
-.macro	RETLDM	regs=, cond=, dirn=ia
-#if defined (__INTERWORKING__)
-	.ifc "\regs",""
-	ldr\cond	lr, [sp], #4
-	.else
-	ldm\cond\dirn	sp!, {\regs, lr}
-	.endif
-	bx\cond	lr
-#else
-	.ifc "\regs",""
-	ldr\cond	pc, [sp], #4
-	.else
-	ldm\cond\dirn	sp!, {\regs, pc}
-	.endif
-#endif
-.endm
-
-
 	@ r0:   ffi_prep_args
 	@ r1:   &ecif
 	@ r2:   cif->bytes
@@ -230,11 +228,18 @@ ARM_FUNC_START ffi_call_SYSV
 #endif
 
 LSYM(Lepilogue):
-	RETLDM	"r0-r3,fp"
+#if defined (__INTERWORKING__)
+	ldmia   sp!, {r0-r3,fp, lr}
+	bx	lr
+#else
+	ldmia   sp!, {r0-r3,fp, pc}
+#endif
 
 .ffi_call_SYSV_end:
 	UNWIND .fnend
+#ifdef __ELF__
         .size    CNAME(ffi_call_SYSV),.ffi_call_SYSV_end-CNAME(ffi_call_SYSV)
+#endif
 
 /*
 	unsigned int FFI_HIDDEN
@@ -306,7 +311,9 @@ ARM_FUNC_START ffi_closure_SYSV
 
 .ffi_closure_SYSV_end:
 	UNWIND .fnend
+#ifdef __ELF__
         .size    CNAME(ffi_closure_SYSV),.ffi_closure_SYSV_end-CNAME(ffi_closure_SYSV)
+#endif
 
 #if defined __ELF__ && defined __linux__
 	.section	.note.GNU-stack,"",%progbits