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

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

   $Id:$

   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:
	save	%sp, -STACKFRAME, %sp
	
	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

.ffi_call_V9_end:
        .size    ffi_call_V9,.ffi_call_V9_end-ffi_call_V9

#endif
Commit	Line	Data
3791773c JJ	1	/* -----------------------------------------------------------------------
	2	v9.S - Copyright (c) 2000 Cygnus Solutions
	3
	4	Sparc 64bit Foreign Function Interface
	5
	6	$Id:$
	7
	8	Permission is hereby granted, free of charge, to any person obtaining
	9	a copy of this software and associated documentation files (the
	10	``Software''), to deal in the Software without restriction, including
	11	without limitation the rights to use, copy, modify, merge, publish,
	12	distribute, sublicense, and/or sell copies of the Software, and to
	13	permit persons to whom the Software is furnished to do so, subject to
	14	the following conditions:
	15
	16	The above copyright notice and this permission notice shall be included
	17	in all copies or substantial portions of the Software.
	18
	19	THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
	20	OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	21	MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	22	IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	23	OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	24	ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	25	OTHER DEALINGS IN THE SOFTWARE.
	26	----------------------------------------------------------------------- */
	27
	28	#define LIBFFI_ASM
	29	#include <ffi.h>
	30
	31	#ifdef SPARC64
	32	/* Only compile this in for 64bit builds, because otherwise the object file
	33	will have inproper architecture due to used instructions. */
	34
	35	#define STACKFRAME 128 /* Minimum stack framesize for SPARC */
	36	#define STACK_BIAS 2047
	37	#define ARGS (128) /* Offset of register area in frame */
	38
	39	.text
	40	.align 8
	41	.globl ffi_call_V9
	42	.globl _ffi_call_V9
	43
	44	ffi_call_V9:
	45	_ffi_call_V9:
	46	save %sp, -STACKFRAME, %sp
	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
102	cmp %i3, FFI_TYPE_LONGDOUBLE
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
123
124	.ffi_call_V9_end:
125	.size ffi_call_V9,.ffi_call_V9_end-ffi_call_V9
126
127	#endif