[patch]: Sandro's GCJ on Darwin/i386 patches pt.2

[howarth at bromo dot msbb dot uc dot edu (Jack Howarth)]

This is the second patch from Sandro Tolaini's original
patches which were posted...

http://gcc.gnu.org/ml/java-patches/2006-q1/msg00347.html

with the changelog entries as listed in...

http://gcc.gnu.org/ml/java-patches/2006-q1/msg00353.html

and applied to current gcc trunk to generate the
diffs shown below.

2006-03-28 Sandro Tolaini <tolaini@libero.it>

	* configure.ac: Enable Darwin/i386 as a supported target
	* src/x86/ffi.c: Port to Darwin/i386
	* src/x86/sysv.S: Likewise
	* src/prep_cif.c: Likewise


Index: libffi/src/x86/ffi.c
===================================================================
--- libffi/src/x86/ffi.c	(revision 116989)
+++ libffi/src/x86/ffi.c	(working copy)
@@ -119,7 +119,7 @@ ffi_status ffi_prep_cif_machdep(ffi_cif 
   switch (cif->rtype->type)
     {
     case FFI_TYPE_VOID:
-#ifndef X86_WIN32
+#if !defined X86_WIN32 && !defined __APPLE__
     case FFI_TYPE_STRUCT:
 #endif
     case FFI_TYPE_SINT64:
@@ -133,7 +133,7 @@ ffi_status ffi_prep_cif_machdep(ffi_cif 
       cif->flags = FFI_TYPE_SINT64;
       break;
 
-#ifdef X86_WIN32
+#if defined X86_WIN32 || defined __APPLE__
     case FFI_TYPE_STRUCT:
       if (cif->rtype->size == 1)
         {
@@ -163,6 +163,10 @@ ffi_status ffi_prep_cif_machdep(ffi_cif 
       break;
     }
 
+#ifdef __APPLE__
+  cif->bytes = (cif->bytes + 15) & ~0xF;
+#endif
+
   return FFI_OK;
 }
 
Index: libffi/src/x86/sysv.S
===================================================================
--- libffi/src/x86/sysv.S	(revision 116989)
+++ libffi/src/x86/sysv.S	(working copy)
@@ -31,18 +31,34 @@
 
 .text
 
+#ifdef __APPLE__
+.globl _ffi_prep_args
+#else
 .globl ffi_prep_args
+#endif
+
 
 	.align 4
+#ifdef __APPLE__
+.globl _ffi_call_SYSV
+#else
 .globl ffi_call_SYSV
         .type    ffi_call_SYSV,@function
+#endif
 
+#ifdef __APPLE__
+_ffi_call_SYSV:
+#else
 ffi_call_SYSV:
+#endif
 .LFB1:
         pushl %ebp
 .LCFI0:
         movl  %esp,%ebp
 .LCFI1:
+#ifdef __APPLE__
+        subl $8,%esp
+#endif
 	/* Make room for all of the new args.  */
 	movl  16(%ebp),%ecx
 	subl  %ecx,%esp
@@ -50,12 +66,19 @@ ffi_call_SYSV:
 	movl  %esp,%eax
 
 	/* Place all of the ffi_prep_args in position  */
+#ifdef __APPLE__
+	subl  $8,%esp
+#endif
 	pushl 12(%ebp)
 	pushl %eax
 	call  *8(%ebp)
 
 	/* Return stack to previous state and call the function  */
+#ifdef __APPLE__
+	addl  $16,%esp	
+#else
 	addl  $8,%esp	
+#endif
 
 	call  *28(%ebp)
 
@@ -112,30 +135,67 @@ retlongdouble:
 	
 retint64:	
 	cmpl  $FFI_TYPE_SINT64,%ecx
-        jne   retstruct
+        jne   retstruct1b
 	/* Load %ecx with the pointer to storage for the return value  */
 	movl  24(%ebp),%ecx	
 	movl  %eax,0(%ecx)
 	movl  %edx,4(%ecx)
+	jmp   epilogue
 	
+retstruct1b:	
+	cmpl  $FFI_TYPE_SINT8,%ecx
+        jne   retstruct2b
+	/* Load %ecx with the pointer to storage for the return value  */
+	movl  24(%ebp),%ecx	
+	movb  %al,0(%ecx)
+	jmp   epilogue
+
+retstruct2b:	
+	cmpl  $FFI_TYPE_SINT16,%ecx
+        jne   retstruct
+	/* Load %ecx with the pointer to storage for the return value  */
+	movl  24(%ebp),%ecx	
+	movw  %ax,0(%ecx)
+	jmp   epilogue
+
 retstruct:
+	cmpl  $FFI_TYPE_STRUCT,%ecx
+        jne   noretval
 	/* Nothing to do!  */
+#ifdef __APPLE__
+        addl $4,%esp
+        popl %ebp
+        ret
+#endif
 
 noretval:
 epilogue:
+#ifdef __APPLE__
+        addl $8,%esp
+#endif
         movl %ebp,%esp
         popl %ebp
         ret
 .LFE1:
 .ffi_call_SYSV_end:
+#ifndef __APPLE__
         .size    ffi_call_SYSV,.ffi_call_SYSV_end-ffi_call_SYSV
+#endif
 
 	.align	4
 FFI_HIDDEN (ffi_closure_SYSV)
+#ifdef __APPLE__
+.globl _ffi_closure_SYSV
+#else
 .globl ffi_closure_SYSV
 	.type	ffi_closure_SYSV, @function
+#endif
 
+#ifdef __APPLE__
+_ffi_closure_SYSV:
+#else
 ffi_closure_SYSV:
+#endif
 .LFB2:
 	pushl	%ebp
 .LCFI2:
@@ -153,10 +213,14 @@ ffi_closure_SYSV:
 #else
 	movl	%ebx, 8(%esp)
 .LCFI7:
+#ifdef __APPLE__
+	call	L_ffi_closure_SYSV_inner$stub
+#else
 	call	1f
 1:	popl	%ebx
 	addl	$_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
 	call	ffi_closure_SYSV_inner@PLT
+#endif
 	movl	8(%esp), %ebx
 #endif
 	movl	-12(%ebp), %ecx
@@ -170,6 +234,14 @@ ffi_closure_SYSV:
 	je	.Lcls_retldouble
 	cmpl	$FFI_TYPE_SINT64, %eax
 	je	.Lcls_retllong
+#ifdef __APPLE__
+	cmpl	$FFI_TYPE_SINT8, %eax
+	je	.Lcls_retstruct1
+	cmpl	$FFI_TYPE_SINT16, %eax
+	je	.Lcls_retstruct2
+	cmpl	$FFI_TYPE_STRUCT, %eax
+	je	.Lcls_retstruct
+#endif
 .Lcls_epilogue:
 	movl	%ebp, %esp
 	popl	%ebp
@@ -190,8 +262,23 @@ ffi_closure_SYSV:
 	movl	(%ecx), %eax
 	movl	4(%ecx), %edx
 	jmp	.Lcls_epilogue
+#ifdef __APPLE__
+.Lcls_retstruct1:
+	movsbl	(%ecx), %eax
+	jmp	.Lcls_epilogue
+.Lcls_retstruct2:
+	movswl	(%ecx), %eax
+	jmp	.Lcls_epilogue
+.Lcls_retstruct:
+	lea -8(%ebp),%esp
+	movl	%ebp, %esp
+	popl	%ebp
+	ret $4
+#endif
 .LFE2:
+#ifndef __APPLE__
 	.size	ffi_closure_SYSV, .-ffi_closure_SYSV
+#endif
 
 #if !FFI_NO_RAW_API
 
@@ -202,10 +289,18 @@ ffi_closure_SYSV:
 
 	.align	4
 FFI_HIDDEN (ffi_closure_raw_SYSV)
+#ifdef __APPLE__
+.globl _ffi_closure_raw_SYSV
+#else
 .globl ffi_closure_raw_SYSV
 	.type	ffi_closure_raw_SYSV, @function
+#endif
 
+#ifdef __APPLE__
+_ffi_closure_raw_SYSV:
+#else
 ffi_closure_raw_SYSV:
+#endif
 .LFB3:
 	pushl	%ebp
 .LCFI4:
@@ -256,8 +351,127 @@ ffi_closure_raw_SYSV:
 	movl	-20(%ebp), %edx
 	jmp	.Lrcls_epilogue
 .LFE3:
+#ifndef __APPLE__
 	.size	ffi_closure_raw_SYSV, .-ffi_closure_raw_SYSV
 #endif
+#endif
+
+#ifdef __APPLE__
+.section __IMPORT,__jump_table,symbol_stubs,self_modifying_code+pure_instructions,5
+L_ffi_closure_SYSV_inner$stub:
+	.indirect_symbol _ffi_closure_SYSV_inner
+	hlt ; hlt ; hlt ; hlt ; hlt
+#endif
+
+#ifdef __APPLE__
+
+.section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support
+EH_frame1:
+	.set	L$set$0,LECIE1-LSCIE1
+	.long	L$set$0
+LSCIE1:
+	.long	0x0
+	.byte	0x1
+	.ascii "zR\0"
+	.byte	0x1
+	.byte	0x7c
+	.byte	0x8
+	.byte	0x1
+	.byte	0x10
+	.byte	0xc
+	.byte	0x5
+	.byte	0x4
+	.byte	0x88
+	.byte	0x1
+	.align 2
+LECIE1:
+.globl _ffi_call_SYSV.eh
+_ffi_call_SYSV.eh:
+LSFDE1:
+	.set	L$set$1,LEFDE1-LASFDE1
+	.long	L$set$1
+LASFDE1:
+	.long	LASFDE1-EH_frame1
+	.long	.LFB1-.
+	.set L$set$2,.LFE1-.LFB1
+	.long L$set$2
+	.byte	0x0
+	.byte	0x4
+	.set L$set$3,.LCFI0-.LFB1
+	.long L$set$3
+	.byte	0xe
+	.byte	0x8
+	.byte	0x84
+	.byte	0x2
+	.byte	0x4
+	.set L$set$4,.LCFI1-.LCFI0
+	.long L$set$4
+	.byte	0xd
+	.byte	0x4
+	.align 2
+LEFDE1:
+.globl _ffi_closure_SYSV.eh
+_ffi_closure_SYSV.eh:
+LSFDE2:
+	.set	L$set$5,LEFDE2-LASFDE2
+	.long	L$set$5
+LASFDE2:
+	.long	LASFDE2-EH_frame1
+	.long	.LFB2-.
+	.set L$set$6,.LFE2-.LFB2
+	.long L$set$6
+	.byte	0x0
+	.byte	0x4
+	.set L$set$7,.LCFI2-.LFB2
+	.long L$set$7
+	.byte	0xe
+	.byte	0x8
+	.byte	0x84
+	.byte	0x2
+	.byte	0x4
+	.set L$set$8,.LCFI3-.LCFI2
+	.long L$set$8
+	.byte	0xd
+	.byte	0x4
+	.align 2
+LEFDE2:
+
+#if !FFI_NO_RAW_API
+
+.globl _ffi_closure_raw_SYSV.eh
+_ffi_closure_raw_SYSV.eh:
+LSFDE3:
+	.set	L$set$10,LEFDE3-LASFDE3
+	.long	L$set$10
+LASFDE3:
+	.long	LASFDE3-EH_frame1
+	.long	.LFB3-.
+	.set L$set$11,.LFE3-.LFB3
+	.long L$set$11
+	.byte	0x0
+	.byte	0x4
+	.set L$set$12,.LCFI4-.LFB3
+	.long L$set$12
+	.byte	0xe
+	.byte	0x8
+	.byte	0x84
+	.byte	0x2
+	.byte	0x4
+	.set L$set$13,.LCFI5-.LCFI4
+	.long L$set$13
+	.byte	0xd
+	.byte	0x4
+	.byte	0x4
+	.set L$set$14,.LCFI6-.LCFI5
+	.long L$set$14
+	.byte	0x85
+	.byte	0x3
+	.align 2
+LEFDE3:
+
+#endif
+
+#else
 
 	.section	.eh_frame,EH_FRAME_FLAGS,@progbits
 .Lframe1:
@@ -375,4 +589,6 @@ ffi_closure_raw_SYSV:
 
 #endif
 
+#endif
+
 #endif /* ifndef __x86_64__ */
Index: libffi/src/prep_cif.c
===================================================================
--- libffi/src/prep_cif.c	(revision 116989)
+++ libffi/src/prep_cif.c	(working copy)
@@ -115,7 +115,10 @@ ffi_status ffi_prep_cif(ffi_cif *cif, ff
 #ifdef SPARC
       && (cif->abi != FFI_V9 || cif->rtype->size > 32)
 #endif
+#ifdef __APPLE__
+      && (cif->rtype->size > 8)
       )
+#endif
     bytes = STACK_ARG_SIZE(sizeof(void*));
 #endif
 
Index: libffi/configure.ac
===================================================================
--- libffi/configure.ac	(revision 116989)
+++ libffi/configure.ac	(working copy)
@@ -46,6 +46,7 @@ i*86-*-gnu*) TARGET=X86; TARGETDIR=x86;;
 i*86-*-solaris2.1[[0-9]]*) TARGET=X86_64; TARGETDIR=x86;;
 i*86-*-solaris*) TARGET=X86; TARGETDIR=x86;;
 i*86-*-beos*) TARGET=X86; TARGETDIR=x86;;
+i*86-*-darwin*) TARGET=X86; TARGETDIR=x86;;
 i*86-*-freebsd* | i*86-*-kfreebsd*-gnu) TARGET=X86; TARGETDIR=x86;;
 i*86-*-netbsdelf* | i*86-*-knetbsd*-gnu) TARGET=X86; TARGETDIR=x86;;
 i*86-*-rtems*) TARGET=X86; TARGETDIR=x86;;