[thirdparty/gcc.git] / libffi / src / sparc / v9.S

/* -----------------------------------------------------------------------
   v9.S - Copyright (c) 2000, 2003 Cygnus Solutions
   
   Sparc 64bit Foreign Function Interface 

   Permission is hereby granted, free of charge, to any person obtaining
   a copy of this software and associated documentation files (the
   ``Software''), to deal in the Software without restriction, including
   without limitation the rights to use, copy, modify, merge, publish,
   distribute, sublicense, and/or sell copies of the Software, and to
   permit persons to whom the Software is furnished to do so, subject to
   the following conditions:

   The above copyright notice and this permission notice shall be included
   in all copies or substantial portions of the Software.

   THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
   OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
   ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   OTHER DEALINGS IN THE SOFTWARE.
   ----------------------------------------------------------------------- */

#define LIBFFI_ASM	
#include <ffi.h>

#ifdef SPARC64
/* Only compile this in for 64bit builds, because otherwise the object file
   will have inproper architecture due to used instructions.  */

#define STACKFRAME 128		/* Minimum stack framesize for SPARC */
#define STACK_BIAS 2047
#define ARGS (128)		/* Offset of register area in frame */

.text
        .align 8
.globl ffi_call_V9
.globl _ffi_call_V9

ffi_call_V9:
_ffi_call_V9:
.LLFB1:
	save	%sp, -STACKFRAME, %sp
.LLCFI0:
	
	sub	%sp, %i2, %sp	! alloca() space in stack for frame to set up
	add	%sp, STACKFRAME+STACK_BIAS, %l0	! %l0 has start of 
						! frame to set up

	mov	%l0, %o0	! call routine to set up frame
	call	%i0
	 mov	%i1, %o1	! (delay)
	brz,pt	%o0, 1f
	 ldx	[%l0+ARGS], %o0	! call foreign function

	ldd	[%l0+ARGS], %f0
	ldd	[%l0+ARGS+8], %f2
	ldd	[%l0+ARGS+16], %f4
	ldd	[%l0+ARGS+24], %f6
	ldd	[%l0+ARGS+32], %f8
	ldd	[%l0+ARGS+40], %f10
	ldd	[%l0+ARGS+48], %f12
	ldd	[%l0+ARGS+56], %f14
	ldd	[%l0+ARGS+64], %f16
	ldd	[%l0+ARGS+72], %f18
	ldd	[%l0+ARGS+80], %f20
	ldd	[%l0+ARGS+88], %f22
	ldd	[%l0+ARGS+96], %f24
	ldd	[%l0+ARGS+104], %f26
	ldd	[%l0+ARGS+112], %f28
	ldd	[%l0+ARGS+120], %f30

1:	ldx	[%l0+ARGS+8], %o1
	ldx	[%l0+ARGS+16], %o2
	ldx	[%l0+ARGS+24], %o3
	ldx	[%l0+ARGS+32], %o4
	ldx	[%l0+ARGS+40], %o5
	call	%i5
	 sub	%l0, STACK_BIAS, %sp	! (delay) switch to frame

	! If the return value pointer is NULL, assume no return value.
	brz,pn	%i4, done
	 nop

	cmp	%i3, FFI_TYPE_INT
	be,a,pt	%icc, done
	 stx	%o0, [%i4]	! (delay)

	cmp	%i3, FFI_TYPE_FLOAT
	be,a,pn	%icc, done
	 st	%f0, [%i4+0]	! (delay)

	cmp	%i3, FFI_TYPE_DOUBLE
	be,a,pn	%icc, done
	 std	%f0, [%i4+0]	! (delay)

	cmp	%i3, FFI_TYPE_STRUCT
	be,pn	%icc, dostruct

	cmp	%i3, FFI_TYPE_LONGDOUBLE
	bne,pt	%icc, done
	 nop
	std	%f0, [%i4+0]
	std	%f2, [%i4+8]

done:	ret
	 restore

dostruct:
	/* This will not work correctly for unions. */
	stx	%o0, [%i4+0]
	stx	%o1, [%i4+8]
	stx	%o2, [%i4+16]
	stx	%o3, [%i4+24]
	std	%f0, [%i4+32]
	std	%f2, [%i4+40]
	std	%f4, [%i4+48]
	std	%f6, [%i4+56]
	ret
	 restore
.LLFE1:

.ffi_call_V9_end:
	.size	ffi_call_V9,.ffi_call_V9_end-ffi_call_V9


#define	STACKFRAME	 240	/* 16*8 register window +
				   6*8 args backing store +
				   8*8 locals */
#define	FP		%fp+STACK_BIAS

/* ffi_closure_v9(...)

   Receives the closure argument in %g1.   */

	.text
	.align 8
	.globl ffi_closure_v9

ffi_closure_v9:
.LLFB2:
	save	%sp, -STACKFRAME, %sp
.LLCFI1:

	! Store all of the potential argument registers in va_list format.
	stx	%i0, [FP+128+0]
	stx	%i1, [FP+128+8]
	stx	%i2, [FP+128+16]
	stx	%i3, [FP+128+24]
	stx	%i4, [FP+128+32]
	stx	%i5, [FP+128+40]

	! Store possible floating point argument registers too.
	std	%f0, [FP-48]
	std	%f2, [FP-40]
	std	%f4, [FP-32]
	std	%f6, [FP-24]
	std	%f8, [FP-16]
	std	%f10, [FP-8]

	! Call ffi_closure_sparc_inner to do the bulk of the work.
	mov	%g1, %o0
	add	%fp, STACK_BIAS-64, %o1
	add	%fp, STACK_BIAS+128, %o2
	call	ffi_closure_sparc_inner
	 add	%fp, STACK_BIAS-48, %o3

	! Load up the return value in the proper type.
	cmp	%o0, FFI_TYPE_VOID
	be,pn	%icc, done1

	cmp	%o0, FFI_TYPE_FLOAT
	be,a,pn	%icc, done1
	 ld	[FP-64], %f0

	cmp	%o0, FFI_TYPE_DOUBLE
	be,a,pn	%icc, done1
	 ldd	[FP-64], %f0

	cmp	%o0, FFI_TYPE_LONGDOUBLE
	be,a,pn	%icc, longdouble1
	 ldd	[FP-64], %f0

	cmp	%o0, FFI_TYPE_STRUCT
	be,pn	%icc, struct1

	! FFI_TYPE_UINT64 | FFI_TYPE_SINT64 | FFI_TYPE_POINTER
	ldx	[FP-64], %i0

done1:
	ret
	 restore

struct1:
	ldx [FP-56], %i2
	ret
	 restore

longdouble1:
	ldd	[FP-56], %f2
	ret
	 restore
.LLFE2:

.ffi_closure_v9_end:
	.size	ffi_closure_v9,.ffi_closure_v9_end-ffi_closure_v9

	.section	".eh_frame",#alloc,#write
.LLframe1:
	.uaword	.LLECIE1-.LLSCIE1	! Length of Common Information Entry
.LLSCIE1:
	.uaword	0x0	! CIE Identifier Tag
	.byte	0x1	! CIE Version
	.ascii "zR\0"	! CIE Augmentation
	.byte	0x1	! uleb128 0x1; CIE Code Alignment Factor
	.byte	0x78	! sleb128 -8; CIE Data Alignment Factor
	.byte	0xf	! CIE RA Column
	.byte	0x1	! uleb128 0x1; Augmentation size
#ifdef HAVE_AS_SPARC_UA_PCREL
	.byte	0x1b	! FDE Encoding (pcrel sdata4)
#else
	.byte	0x50	! FDE Encoding (aligned absolute)
#endif
	.byte	0xc	! DW_CFA_def_cfa
	.byte	0xe	! uleb128 0xe
	.byte	0xff,0xf	! uleb128 0x7ff
	.align 8
.LLECIE1:
.LLSFDE1:
	.uaword	.LLEFDE1-.LLASFDE1	! FDE Length
.LLASFDE1:
	.uaword	.LLASFDE1-.LLframe1	! FDE CIE offset
#ifdef HAVE_AS_SPARC_UA_PCREL
	.uaword	%r_disp32(.LLFB1)
	.uaword	.LLFE1-.LLFB1		! FDE address range
#else
	.align 8
	.xword	.LLFB1
	.uaxword	.LLFE1-.LLFB1	! FDE address range
#endif
	.byte	0x0	! uleb128 0x0; Augmentation size
	.byte	0x4	! DW_CFA_advance_loc4
	.uaword	.LLCFI0-.LLFB1
	.byte	0xd	! DW_CFA_def_cfa_register
	.byte	0x1e	! uleb128 0x1e
	.byte	0x2d	! DW_CFA_GNU_window_save
	.byte	0x9	! DW_CFA_register
	.byte	0xf	! uleb128 0xf
	.byte	0x1f	! uleb128 0x1f
	.align 8
.LLEFDE1:
.LLSFDE2:
	.uaword	.LLEFDE2-.LLASFDE2	! FDE Length
.LLASFDE2:
	.uaword	.LLASFDE2-.LLframe1	! FDE CIE offset
#ifdef HAVE_AS_SPARC_UA_PCREL
	.uaword	%r_disp32(.LLFB2)
	.uaword	.LLFE2-.LLFB2		! FDE address range
#else
	.align 8
	.xword	.LLFB2
	.uaxword	.LLFE2-.LLFB2	! FDE address range
#endif
	.byte	0x0	! uleb128 0x0; Augmentation size
	.byte	0x4	! DW_CFA_advance_loc4
	.uaword	.LLCFI1-.LLFB2
	.byte	0xd	! DW_CFA_def_cfa_register
	.byte	0x1e	! uleb128 0x1e
	.byte	0x2d	! DW_CFA_GNU_window_save
	.byte	0x9	! DW_CFA_register
	.byte	0xf	! uleb128 0xf
	.byte	0x1f	! uleb128 0x1f
	.align 8
.LLEFDE2:
#endif
Commit	Line	Data
3791773c	1	/* -----------------------------------------------------------------------
c75c7793	2	v9.S - Copyright (c) 2000, 2003 Cygnus Solutions
3791773c JJ	3
	4	Sparc 64bit Foreign Function Interface
	5
3791773c JJ	6	Permission is hereby granted, free of charge, to any person obtaining
	7	a copy of this software and associated documentation files (the
	8	``Software''), to deal in the Software without restriction, including
	9	without limitation the rights to use, copy, modify, merge, publish,
	10	distribute, sublicense, and/or sell copies of the Software, and to
	11	permit persons to whom the Software is furnished to do so, subject to
	12	the following conditions:
	13
	14	The above copyright notice and this permission notice shall be included
	15	in all copies or substantial portions of the Software.
	16
	17	THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
	18	OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	19	MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	20	IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	21	OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	22	ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	23	OTHER DEALINGS IN THE SOFTWARE.
	24	----------------------------------------------------------------------- */
	25
	26	#define LIBFFI_ASM
	27	#include <ffi.h>
	28
	29	#ifdef SPARC64
	30	/* Only compile this in for 64bit builds, because otherwise the object file
	31	will have inproper architecture due to used instructions. */
	32
	33	#define STACKFRAME 128 /* Minimum stack framesize for SPARC */
	34	#define STACK_BIAS 2047
	35	#define ARGS (128) /* Offset of register area in frame */
	36
	37	.text
	38	.align 8
	39	.globl ffi_call_V9
	40	.globl _ffi_call_V9
	41
	42	ffi_call_V9:
	43	_ffi_call_V9:
0c0b87ad	44	.LLFB1:
3791773c	45	save %sp, -STACKFRAME, %sp
0c0b87ad	46	.LLCFI0:
3791773c JJ	47
	48	sub %sp, %i2, %sp ! alloca() space in stack for frame to set up
	49	add %sp, STACKFRAME+STACK_BIAS, %l0 ! %l0 has start of
	50	! frame to set up
	51
	52	mov %l0, %o0 ! call routine to set up frame
	53	call %i0
	54	mov %i1, %o1 ! (delay)
	55	brz,pt %o0, 1f
	56	ldx [%l0+ARGS], %o0 ! call foreign function
	57
	58	ldd [%l0+ARGS], %f0
	59	ldd [%l0+ARGS+8], %f2
	60	ldd [%l0+ARGS+16], %f4
	61	ldd [%l0+ARGS+24], %f6
	62	ldd [%l0+ARGS+32], %f8
	63	ldd [%l0+ARGS+40], %f10
	64	ldd [%l0+ARGS+48], %f12
	65	ldd [%l0+ARGS+56], %f14
	66	ldd [%l0+ARGS+64], %f16
	67	ldd [%l0+ARGS+72], %f18
	68	ldd [%l0+ARGS+80], %f20
	69	ldd [%l0+ARGS+88], %f22
	70	ldd [%l0+ARGS+96], %f24
	71	ldd [%l0+ARGS+104], %f26
	72	ldd [%l0+ARGS+112], %f28
	73	ldd [%l0+ARGS+120], %f30
	74
	75	1: ldx [%l0+ARGS+8], %o1
	76	ldx [%l0+ARGS+16], %o2
	77	ldx [%l0+ARGS+24], %o3
	78	ldx [%l0+ARGS+32], %o4
	79	ldx [%l0+ARGS+40], %o5
	80	call %i5
	81	sub %l0, STACK_BIAS, %sp ! (delay) switch to frame
	82
	83	! If the return value pointer is NULL, assume no return value.
	84	brz,pn %i4, done
	85	nop
	86
	87	cmp %i3, FFI_TYPE_INT
	88	be,a,pt %icc, done
	89	stx %o0, [%i4] ! (delay)
	90
	91	cmp %i3, FFI_TYPE_FLOAT
	92	be,a,pn %icc, done
	93	st %f0, [%i4+0] ! (delay)
	94
	95	cmp %i3, FFI_TYPE_DOUBLE
	96	be,a,pn %icc, done
	97	std %f0, [%i4+0] ! (delay)
	98
	99	cmp %i3, FFI_TYPE_STRUCT
	100	be,pn %icc, dostruct
	101
c75c7793	102	cmp %i3, FFI_TYPE_LONGDOUBLE
3791773c JJ	103	bne,pt %icc, done
	104	nop
	105	std %f0, [%i4+0]
	106	std %f2, [%i4+8]
	107
	108	done: ret
	109	restore
	110
	111	dostruct:
	112	/* This will not work correctly for unions. */
	113	stx %o0, [%i4+0]
	114	stx %o1, [%i4+8]
	115	stx %o2, [%i4+16]
	116	stx %o3, [%i4+24]
	117	std %f0, [%i4+32]
	118	std %f2, [%i4+40]
	119	std %f4, [%i4+48]
	120	std %f6, [%i4+56]
	121	ret
	122	restore
0c0b87ad	123	.LLFE1:
3791773c JJ	124
3791773c JJ	125	.ffi_call_V9_end:
0c0b87ad JS	126	.size ffi_call_V9,.ffi_call_V9_end-ffi_call_V9
0c0b87ad JS	127
c75c7793 JS	128
	129	#define STACKFRAME 240 /* 16*8 register window +
	130	6*8 args backing store +
	131	88 locals /
	132	#define FP %fp+STACK_BIAS
	133
	134	/* ffi_closure_v9(...)
	135
	136	Receives the closure argument in %g1. */
	137
	138	.text
	139	.align 8
	140	.globl ffi_closure_v9
	141
	142	ffi_closure_v9:
	143	.LLFB2:
	144	save %sp, -STACKFRAME, %sp
	145	.LLCFI1:
	146
	147	! Store all of the potential argument registers in va_list format.
	148	stx %i0, [FP+128+0]
	149	stx %i1, [FP+128+8]
	150	stx %i2, [FP+128+16]
	151	stx %i3, [FP+128+24]
	152	stx %i4, [FP+128+32]
	153	stx %i5, [FP+128+40]
	154
	155	! Store possible floating point argument registers too.
	156	std %f0, [FP-48]
	157	std %f2, [FP-40]
	158	std %f4, [FP-32]
	159	std %f6, [FP-24]
	160	std %f8, [FP-16]
	161	std %f10, [FP-8]
	162
	163	! Call ffi_closure_sparc_inner to do the bulk of the work.
	164	mov %g1, %o0
	165	add %fp, STACK_BIAS-64, %o1
	166	add %fp, STACK_BIAS+128, %o2
	167	call ffi_closure_sparc_inner
	168	add %fp, STACK_BIAS-48, %o3
	169
	170	! Load up the return value in the proper type.
	171	cmp %o0, FFI_TYPE_VOID
	172	be,pn %icc, done1
	173
	174	cmp %o0, FFI_TYPE_FLOAT
	175	be,a,pn %icc, done1
	176	ld [FP-64], %f0
	177
	178	cmp %o0, FFI_TYPE_DOUBLE
	179	be,a,pn %icc, done1
	180	ldd [FP-64], %f0
	181
	182	cmp %o0, FFI_TYPE_LONGDOUBLE
	183	be,a,pn %icc, longdouble1
	184	ldd [FP-64], %f0
	185
	186	cmp %o0, FFI_TYPE_STRUCT
	187	be,pn %icc, struct1
	188
	189	! FFI_TYPE_UINT64 \| FFI_TYPE_SINT64 \| FFI_TYPE_POINTER
	190	ldx [FP-64], %i0
	191
192	done1:
193	ret
194	restore
195
196	struct1:
197	ldx [FP-56], %i2
198	ret
199	restore
200
201	longdouble1:
202	ldd [FP-56], %f2
203	ret
204	restore
205	.LLFE2:
206
207	.ffi_closure_v9_end:
208	.size ffi_closure_v9,.ffi_closure_v9_end-ffi_closure_v9
209
0c0b87ad JS	210	.section ".eh_frame",#alloc,#write
	211	.LLframe1:
	212	.uaword .LLECIE1-.LLSCIE1 ! Length of Common Information Entry
	213	.LLSCIE1:
	214	.uaword 0x0 ! CIE Identifier Tag
	215	.byte 0x1 ! CIE Version
	216	.ascii "zR\0" ! CIE Augmentation
	217	.byte 0x1 ! uleb128 0x1; CIE Code Alignment Factor
	218	.byte 0x78 ! sleb128 -8; CIE Data Alignment Factor
	219	.byte 0xf ! CIE RA Column
	220	.byte 0x1 ! uleb128 0x1; Augmentation size
5d84cf0b JJ	221	#ifdef HAVE_AS_SPARC_UA_PCREL
	222	.byte 0x1b ! FDE Encoding (pcrel sdata4)
	223	#else
0c0b87ad	224	.byte 0x50 ! FDE Encoding (aligned absolute)
5d84cf0b	225	#endif
0c0b87ad JS	226	.byte 0xc ! DW_CFA_def_cfa
	227	.byte 0xe ! uleb128 0xe
	228	.byte 0xff,0xf ! uleb128 0x7ff
	229	.align 8
	230	.LLECIE1:
	231	.LLSFDE1:
	232	.uaword .LLEFDE1-.LLASFDE1 ! FDE Length
	233	.LLASFDE1:
	234	.uaword .LLASFDE1-.LLframe1 ! FDE CIE offset
5d84cf0b JJ	235	#ifdef HAVE_AS_SPARC_UA_PCREL
	236	.uaword %r_disp32(.LLFB1)
	237	.uaword .LLFE1-.LLFB1 ! FDE address range
	238	#else
0c0b87ad JS	239	.align 8
	240	.xword .LLFB1
	241	.uaxword .LLFE1-.LLFB1 ! FDE address range
5d84cf0b	242	#endif
0c0b87ad JS	243	.byte 0x0 ! uleb128 0x0; Augmentation size
	244	.byte 0x4 ! DW_CFA_advance_loc4
	245	.uaword .LLCFI0-.LLFB1
	246	.byte 0xd ! DW_CFA_def_cfa_register
	247	.byte 0x1e ! uleb128 0x1e
	248	.byte 0x2d ! DW_CFA_GNU_window_save
	249	.byte 0x9 ! DW_CFA_register
	250	.byte 0xf ! uleb128 0xf
	251	.byte 0x1f ! uleb128 0x1f
	252	.align 8
	253	.LLEFDE1:
c75c7793 JS	254	.LLSFDE2:
	255	.uaword .LLEFDE2-.LLASFDE2 ! FDE Length
	256	.LLASFDE2:
	257	.uaword .LLASFDE2-.LLframe1 ! FDE CIE offset
	258	#ifdef HAVE_AS_SPARC_UA_PCREL
	259	.uaword %r_disp32(.LLFB2)
	260	.uaword .LLFE2-.LLFB2 ! FDE address range
	261	#else
	262	.align 8
	263	.xword .LLFB2
	264	.uaxword .LLFE2-.LLFB2 ! FDE address range
	265	#endif
	266	.byte 0x0 ! uleb128 0x0; Augmentation size
	267	.byte 0x4 ! DW_CFA_advance_loc4
	268	.uaword .LLCFI1-.LLFB2
	269	.byte 0xd ! DW_CFA_def_cfa_register
	270	.byte 0x1e ! uleb128 0x1e
	271	.byte 0x2d ! DW_CFA_GNU_window_save
	272	.byte 0x9 ! DW_CFA_register
	273	.byte 0xf ! uleb128 0xf
	274	.byte 0x1f ! uleb128 0x1f
	275	.align 8
	276	.LLEFDE2:
3791773c	277	#endif