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/* -----------------------------------------------------------------------
   sysv.S - Copyright (c) 1998, 2008 Red Hat, Inc.
 
   ARM 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 THE AUTHORS OR COPYRIGHT
   HOLDERS 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 
#include 
#ifdef HAVE_MACHINE_ASM_H
#include 
#else
#ifdef __USER_LABEL_PREFIX__
#define CONCAT1(a, b) CONCAT2(a, b)
#define CONCAT2(a, b) a ## b
 
/* Use the right prefix for global labels.  */
#define CNAME(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
#else
#define CNAME(x) x
#endif
#define ENTRY(x) .globl CNAME(x); .type CNAME(x),%function; CNAME(x):
#endif
 
#ifdef __ELF__
#define LSYM(x) .x
#else
#define LSYM(x) x
#endif
 
/* We need a better way of testing for this, but for now, this is all
   we can do.  */
@ This selects the minimum architecture level required.
#define __ARM_ARCH__ 3
 
#if defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__)
# undef __ARM_ARCH__
# define __ARM_ARCH__ 4
#endif
 
#if defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
        || defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
        || defined(__ARM_ARCH_5TEJ__)
# undef __ARM_ARCH__
# define __ARM_ARCH__ 5
#endif
 
#if defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
        || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
        || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) \
        || defined(__ARM_ARCH_6M__)
# undef __ARM_ARCH__
# define __ARM_ARCH__ 6
#endif
 
#if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
        || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
        || defined(__ARM_ARCH_7EM__)
# undef __ARM_ARCH__
# define __ARM_ARCH__ 7
#endif
 
#if __ARM_ARCH__ >= 5
# define call_reg(x)    blx     x
#elif defined (__ARM_ARCH_4T__)
# define call_reg(x)    mov     lr, pc ; bx     x
# if defined(__thumb__) || defined(__THUMB_INTERWORK__)
#  define __INTERWORKING__
# endif
#else
# define call_reg(x)    mov     lr, pc ; mov    pc, x
#endif
 
/* Conditionally compile unwinder directives.  */
#ifdef __ARM_EABI__
#define UNWIND
#else
#define UNWIND @
#endif
 
 
#if defined(__thumb__) && !defined(__THUMB_INTERWORK__)
.macro  ARM_FUNC_START name
        .text
        .align 0
        .thumb
        .thumb_func
        ENTRY(\name)
        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:
.endm
#else
.macro  ARM_FUNC_START name
        .text
        .align 0
        .arm
        ENTRY(\name)
        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:   fn
        @ r1:   &ecif
        @ r2:   cif->bytes
        @ r3:   fig->flags
        @ sp+0: ecif.rvalue
 
        @ This assumes we are using gas.
ARM_FUNC_START ffi_call_SYSV
        @ Save registers
        stmfd   sp!, {r0-r3, fp, lr}
        UNWIND .save    {r0-r3, fp, lr}
        mov     fp, sp
 
        UNWIND .setfp   fp, sp
 
        @ Make room for all of the new args.
        sub     sp, fp, r2
 
        @ Place all of the ffi_prep_args in position
        mov     r0, sp
        @     r1 already set
 
        @ Call ffi_prep_args(stack, &ecif)
        bl      ffi_prep_args
 
        @ move first 4 parameters in registers
        ldmia   sp, {r0-r3}
 
        @ and adjust stack
        sub     lr, fp, sp      @ cif->bytes == fp - sp
        ldr     ip, [fp]        @ load fn() in advance
        cmp     lr, #16
        movhs   lr, #16
        add     sp, sp, lr
 
        @ call (fn) (...)
        call_reg(ip)
 
        @ Remove the space we pushed for the args
        mov     sp, fp
 
        @ Load r2 with the pointer to storage for the return value
        ldr     r2, [sp, #24]
 
        @ Load r3 with the return type code
        ldr     r3, [sp, #12]
 
        @ If the return value pointer is NULL, assume no return value.
        cmp     r2, #0
        beq     LSYM(Lepilogue)
 
@ return INT
        cmp     r3, #FFI_TYPE_INT
#if defined(__SOFTFP__) || defined(__ARM_EABI__)
        cmpne   r3, #FFI_TYPE_FLOAT
#endif
        streq   r0, [r2]
        beq     LSYM(Lepilogue)
 
        @ return INT64
        cmp     r3, #FFI_TYPE_SINT64
#if defined(__SOFTFP__) || defined(__ARM_EABI__)
        cmpne   r3, #FFI_TYPE_DOUBLE
#endif
        stmeqia r2, {r0, r1}
 
#if !defined(__SOFTFP__) && !defined(__ARM_EABI__)
        beq     LSYM(Lepilogue)
 
@ return FLOAT
        cmp     r3, #FFI_TYPE_FLOAT
        stfeqs  f0, [r2]
        beq     LSYM(Lepilogue)
 
@ return DOUBLE or LONGDOUBLE
        cmp     r3, #FFI_TYPE_DOUBLE
        stfeqd  f0, [r2]
#endif
 
LSYM(Lepilogue):
        RETLDM  "r0-r3,fp"
 
.ffi_call_SYSV_end:
        UNWIND .fnend
        .size    CNAME(ffi_call_SYSV),.ffi_call_SYSV_end-CNAME(ffi_call_SYSV)
 
 
/*
        unsigned int FFI_HIDDEN
        ffi_closure_SYSV_inner (closure, respp, args)
             ffi_closure *closure;
             void **respp;
             void *args;
*/
 
ARM_FUNC_START ffi_closure_SYSV
        UNWIND .pad #16
        add     ip, sp, #16
        stmfd   sp!, {ip, lr}
        UNWIND .save    {r0, lr}
        add     r2, sp, #8
        UNWIND .pad #16
        sub     sp, sp, #16
        str     sp, [sp, #8]
        add     r1, sp, #8
        bl      ffi_closure_SYSV_inner
        cmp     r0, #FFI_TYPE_INT
        beq     .Lretint
 
        cmp     r0, #FFI_TYPE_FLOAT
#if defined(__SOFTFP__) || defined(__ARM_EABI__)
        beq     .Lretint
#else
        beq     .Lretfloat
#endif
 
        cmp     r0, #FFI_TYPE_DOUBLE
#if defined(__SOFTFP__) || defined(__ARM_EABI__)
        beq     .Lretlonglong
#else
        beq     .Lretdouble
#endif
 
        cmp     r0, #FFI_TYPE_LONGDOUBLE
#if defined(__SOFTFP__) || defined(__ARM_EABI__)
        beq     .Lretlonglong
#else
        beq     .Lretlongdouble
#endif
 
        cmp     r0, #FFI_TYPE_SINT64
        beq     .Lretlonglong
.Lclosure_epilogue:
        add     sp, sp, #16
        ldmfd   sp, {sp, pc}
.Lretint:
        ldr     r0, [sp]
        b       .Lclosure_epilogue
.Lretlonglong:
        ldr     r0, [sp]
        ldr     r1, [sp, #4]
        b       .Lclosure_epilogue
 
#if !defined(__SOFTFP__) && !defined(__ARM_EABI__)
.Lretfloat:
        ldfs    f0, [sp]
        b       .Lclosure_epilogue
.Lretdouble:
        ldfd    f0, [sp]
        b       .Lclosure_epilogue
.Lretlongdouble:
        ldfd    f0, [sp]
        b       .Lclosure_epilogue
#endif
 
.ffi_closure_SYSV_end:
        UNWIND .fnend
        .size    CNAME(ffi_closure_SYSV),.ffi_closure_SYSV_end-CNAME(ffi_closure_SYSV)
 
 
/* Below are VFP hard-float ABI call and closure implementations.
   Add VFP FPU directive here. */
        .fpu    vfp
 
        @ r0:   fn
        @ r1:   &ecif
        @ r2:   cif->bytes
        @ r3:   fig->flags
        @ sp+0: ecif.rvalue
 
ARM_FUNC_START ffi_call_VFP
        @ Save registers
        stmfd   sp!, {r0-r3, fp, lr}
        UNWIND .save    {r0-r3, fp, lr}
        mov     fp, sp
        UNWIND .setfp   fp, sp
 
        @ Make room for all of the new args.
        sub     sp, sp, r2
 
        @ Make room for loading VFP args
        sub     sp, sp, #64
 
        @ Place all of the ffi_prep_args in position
        mov     r0, sp
        @     r1 already set
        sub     r2, fp, #64   @ VFP scratch space
 
        @ Call ffi_prep_args(stack, &ecif, vfp_space)
        bl      ffi_prep_args
 
        @ Load VFP register args if needed
        cmp     r0, #0
        beq     LSYM(Lbase_args)
 
        @ Load only d0 if possible
        cmp     r0, #3
        sub     ip, fp, #64
        flddle  d0, [ip]
        fldmiadgt       ip, {d0-d7}
 
LSYM(Lbase_args):
        @ move first 4 parameters in registers
        ldmia   sp, {r0-r3}
 
        @ and adjust stack
        sub     lr, ip, sp      @ cif->bytes == (fp - 64) - sp
        ldr     ip, [fp]        @ load fn() in advance
        cmp     lr, #16
        movhs   lr, #16
        add     sp, sp, lr
 
        @ call (fn) (...)
        call_reg(ip)
 
        @ Remove the space we pushed for the args
        mov     sp, fp
 
        @ Load r2 with the pointer to storage for
        @ the return value
        ldr     r2, [sp, #24]
 
        @ Load r3 with the return type code
        ldr     r3, [sp, #12]
 
        @ If the return value pointer is NULL,
        @ assume no return value.
        cmp     r2, #0
        beq     LSYM(Lepilogue_vfp)
 
        cmp     r3, #FFI_TYPE_INT
        streq   r0, [r2]
        beq     LSYM(Lepilogue_vfp)
 
        cmp     r3, #FFI_TYPE_SINT64
        stmeqia r2, {r0, r1}
        beq     LSYM(Lepilogue_vfp)
 
        cmp     r3, #FFI_TYPE_FLOAT
        fstseq  s0, [r2]
        beq     LSYM(Lepilogue_vfp)
 
        cmp     r3, #FFI_TYPE_DOUBLE
        fstdeq  d0, [r2]
        beq     LSYM(Lepilogue_vfp)
 
        cmp     r3, #FFI_TYPE_STRUCT_VFP_FLOAT
        cmpne   r3, #FFI_TYPE_STRUCT_VFP_DOUBLE
        fstmiadeq       r2, {d0-d3}
 
LSYM(Lepilogue_vfp):
        RETLDM  "r0-r3,fp"
 
.ffi_call_VFP_end:
        UNWIND .fnend
        .size    CNAME(ffi_call_VFP),.ffi_call_VFP_end-CNAME(ffi_call_VFP)
 
 
ARM_FUNC_START ffi_closure_VFP
        fstmfdd sp!, {d0-d7}
        @ r0-r3, then d0-d7
        UNWIND .pad #80
        add     ip, sp, #80
        stmfd   sp!, {ip, lr}
        UNWIND .save    {r0, lr}
        add     r2, sp, #72
        add     r3, sp, #8
        UNWIND .pad #72
        sub     sp, sp, #72
        str     sp, [sp, #64]
        add     r1, sp, #64
        bl      ffi_closure_SYSV_inner
 
        cmp     r0, #FFI_TYPE_INT
        beq     .Lretint_vfp
 
        cmp     r0, #FFI_TYPE_FLOAT
        beq     .Lretfloat_vfp
 
        cmp     r0, #FFI_TYPE_DOUBLE
        cmpne   r0, #FFI_TYPE_LONGDOUBLE
        beq     .Lretdouble_vfp
 
        cmp     r0, #FFI_TYPE_SINT64
        beq     .Lretlonglong_vfp
 
        cmp     r0, #FFI_TYPE_STRUCT_VFP_FLOAT
        beq     .Lretfloat_struct_vfp
 
        cmp     r0, #FFI_TYPE_STRUCT_VFP_DOUBLE
        beq     .Lretdouble_struct_vfp
 
.Lclosure_epilogue_vfp:
        add     sp, sp, #72
        ldmfd   sp, {sp, pc}
 
.Lretfloat_vfp:
        flds    s0, [sp]
        b       .Lclosure_epilogue_vfp
.Lretdouble_vfp:
        fldd    d0, [sp]
        b       .Lclosure_epilogue_vfp
.Lretint_vfp:
        ldr     r0, [sp]
        b       .Lclosure_epilogue_vfp
.Lretlonglong_vfp:
        ldmia   sp, {r0, r1}
        b       .Lclosure_epilogue_vfp
.Lretfloat_struct_vfp:
        fldmiad sp, {d0-d1}
        b       .Lclosure_epilogue_vfp
.Lretdouble_struct_vfp:
        fldmiad sp, {d0-d3}
        b       .Lclosure_epilogue_vfp
 
.ffi_closure_VFP_end:
        UNWIND .fnend
        .size    CNAME(ffi_closure_VFP),.ffi_closure_VFP_end-CNAME(ffi_closure_VFP)
 
ENTRY(ffi_arm_trampoline)
        stmfd sp!, {r0-r3}
        ldr r0, [pc]
        ldr pc, [pc]
 
#if defined __ELF__ && defined __linux__
        .section        .note.GNU-stack,"",%progbits
#endif

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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libffi/] [src/] [arm/] [sysv.S] - Blame information for rev 773

Line No.	Rev	Author	Line
1	732	jeremybenn	`/* -----------------------------------------------------------------------`
2			`sysv.S - Copyright (c) 1998, 2008 Red Hat, Inc.`
3
4			`ARM Foreign Function Interface`
5
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,
18			`EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF`
19			`MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND`
20			`NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT`
21			`HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,`
22			`WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,`
23			`OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER`
24			`DEALINGS IN THE SOFTWARE.`
25			`----------------------------------------------------------------------- */`
26
27			`#define LIBFFI_ASM`
28			`#include`
29			`#include`
30			`#ifdef HAVE_MACHINE_ASM_H`
31			`#include`
32			`#else`
33			`#ifdef __USER_LABEL_PREFIX__`
34			`#define CONCAT1(a, b) CONCAT2(a, b)`
35			`#define CONCAT2(a, b) a ## b`
36
37			`/* Use the right prefix for global labels. */`
38			`#define CNAME(x) CONCAT1 (__USER_LABEL_PREFIX__, x)`
39			`#else`
40			`#define CNAME(x) x`
41			`#endif`
42			`#define ENTRY(x) .globl CNAME(x); .type CNAME(x),%function; CNAME(x):`
43			`#endif`
44
45			`#ifdef __ELF__`
46			`#define LSYM(x) .x`
47			`#else`
48			`#define LSYM(x) x`
49			`#endif`
50
51			`/* We need a better way of testing for this, but for now, this is all`
52			`we can do. */`
53			`@ This selects the minimum architecture level required.`
54			`#define __ARM_ARCH__ 3`
55
56			`#if defined(__ARM_ARCH_4__) \|\| defined(__ARM_ARCH_4T__)`
57			`# undef __ARM_ARCH__`
58			`# define __ARM_ARCH__ 4`
59			`#endif`
60
61			`#if defined(__ARM_ARCH_5__) \|\| defined(__ARM_ARCH_5T__) \`
62			`\|\| defined(__ARM_ARCH_5E__) \|\| defined(__ARM_ARCH_5TE__) \`
63			`\|\| defined(__ARM_ARCH_5TEJ__)`
64			`# undef __ARM_ARCH__`
65			`# define __ARM_ARCH__ 5`
66			`#endif`
67
68			`#if defined(__ARM_ARCH_6__) \|\| defined(__ARM_ARCH_6J__) \`
69			`\|\| defined(__ARM_ARCH_6K__) \|\| defined(__ARM_ARCH_6Z__) \`
70			`\|\| defined(__ARM_ARCH_6ZK__) \|\| defined(__ARM_ARCH_6T2__) \`
71			`\|\| defined(__ARM_ARCH_6M__)`
72			`# undef __ARM_ARCH__`
73			`# define __ARM_ARCH__ 6`
74			`#endif`
75
76			`#if defined(__ARM_ARCH_7__) \|\| defined(__ARM_ARCH_7A__) \`
77			`\|\| defined(__ARM_ARCH_7R__) \|\| defined(__ARM_ARCH_7M__) \`
78			`\|\| defined(__ARM_ARCH_7EM__)`
79			`# undef __ARM_ARCH__`
80			`# define __ARM_ARCH__ 7`
81			`#endif`
82
83			`#if __ARM_ARCH__ >= 5`
84			`# define call_reg(x) blx x`
85			`#elif defined (__ARM_ARCH_4T__)`
86			`# define call_reg(x) mov lr, pc ; bx x`
87			`# if defined(__thumb__) \|\| defined(__THUMB_INTERWORK__)`
88			`# define __INTERWORKING__`
89			`# endif`
90			`#else`
91			`# define call_reg(x) mov lr, pc ; mov pc, x`
92			`#endif`
93
94			`/* Conditionally compile unwinder directives. */`
95			`#ifdef __ARM_EABI__`
96			`#define UNWIND`
97			`#else`
98			`#define UNWIND @`
99			`#endif`
100
101
102			`#if defined(__thumb__) && !defined(__THUMB_INTERWORK__)`
103			`.macro ARM_FUNC_START name`
104			`.text`
105			`.align 0`
106			`.thumb`
107			`.thumb_func`
108			`ENTRY(\name)`
109			`bx pc`
110			`nop`
111			`.arm`
112			`UNWIND .fnstart`
113			`/* A hook to tell gdb that we've switched to ARM mode. Also used to call`
114			`directly from other local arm routines. */`
115			`_L__\name:`
116			`.endm`
117			`#else`
118			`.macro ARM_FUNC_START name`
119			`.text`
120			`.align 0`
121			`.arm`
122			`ENTRY(\name)`
123			`UNWIND .fnstart`
124			`.endm`
125			`#endif`
126
127			`.macro RETLDM regs=, cond=, dirn=ia`
128			`#if defined (__INTERWORKING__)`
129			`.ifc "\regs",""`
130			`ldr\cond lr, [sp], #4`
131			`.else`
132			`ldm\cond\dirn sp!, {\regs, lr}`
133			`.endif`
134			`bx\cond lr`
135			`#else`
136			`.ifc "\regs",""`
137			`ldr\cond pc, [sp], #4`
138			`.else`
139			`ldm\cond\dirn sp!, {\regs, pc}`
140			`.endif`
141			`#endif`
142			`.endm`
143
144
145			`@ r0: fn`
146			`@ r1: &ecif`
147			`@ r2: cif->bytes`
148			`@ r3: fig->flags`
149			`@ sp+0: ecif.rvalue`
150
151			`@ This assumes we are using gas.`
152			`ARM_FUNC_START ffi_call_SYSV`
153			`@ Save registers`
154			`stmfd sp!, {r0-r3, fp, lr}`
155			`UNWIND .save {r0-r3, fp, lr}`
156			`mov fp, sp`
157
158			`UNWIND .setfp fp, sp`
159
160			`@ Make room for all of the new args.`
161			`sub sp, fp, r2`
162
163			`@ Place all of the ffi_prep_args in position`
164			`mov r0, sp`
165			`@ r1 already set`
166
167			`@ Call ffi_prep_args(stack, &ecif)`
168			`bl ffi_prep_args`
169
170			`@ move first 4 parameters in registers`
171			`ldmia sp, {r0-r3}`
172
173			`@ and adjust stack`
174			`sub lr, fp, sp @ cif->bytes == fp - sp`
175			`ldr ip, [fp] @ load fn() in advance`
176			`cmp lr, #16`
177			`movhs lr, #16`
178			`add sp, sp, lr`
179
180			`@ call (fn) (...)`
181			`call_reg(ip)`
182
183			`@ Remove the space we pushed for the args`
184			`mov sp, fp`
185
186			`@ Load r2 with the pointer to storage for the return value`
187			`ldr r2, [sp, #24]`
188
189			`@ Load r3 with the return type code`
190			`ldr r3, [sp, #12]`
191
192			`@ If the return value pointer is NULL, assume no return value.`
193			`cmp r2, #0`
194			`beq LSYM(Lepilogue)`
195
196			`@ return INT`
197			`cmp r3, #FFI_TYPE_INT`
198			`#if defined(__SOFTFP__) \|\| defined(__ARM_EABI__)`
199			`cmpne r3, #FFI_TYPE_FLOAT`
200			`#endif`
201			`streq r0, [r2]`
202			`beq LSYM(Lepilogue)`
203
204			`@ return INT64`
205			`cmp r3, #FFI_TYPE_SINT64`
206			`#if defined(__SOFTFP__) \|\| defined(__ARM_EABI__)`
207			`cmpne r3, #FFI_TYPE_DOUBLE`
208			`#endif`
209			`stmeqia r2, {r0, r1}`
210
211			`#if !defined(__SOFTFP__) && !defined(__ARM_EABI__)`
212			`beq LSYM(Lepilogue)`
213
214			`@ return FLOAT`
215			`cmp r3, #FFI_TYPE_FLOAT`
216			`stfeqs f0, [r2]`
217			`beq LSYM(Lepilogue)`
218
219			`@ return DOUBLE or LONGDOUBLE`
220			`cmp r3, #FFI_TYPE_DOUBLE`
221			`stfeqd f0, [r2]`
222			`#endif`
223
224			`LSYM(Lepilogue):`
225			`RETLDM "r0-r3,fp"`
226
227			`.ffi_call_SYSV_end:`
228			`UNWIND .fnend`
229			`.size CNAME(ffi_call_SYSV),.ffi_call_SYSV_end-CNAME(ffi_call_SYSV)`
230
231
232			`/*`
233			`unsigned int FFI_HIDDEN`
234			`ffi_closure_SYSV_inner (closure, respp, args)`
235			`ffi_closure *closure;`
236			`void **respp;`
237			`void *args;`
238			`*/`
239
240			`ARM_FUNC_START ffi_closure_SYSV`
241			`UNWIND .pad #16`
242			`add ip, sp, #16`
243			`stmfd sp!, {ip, lr}`
244			`UNWIND .save {r0, lr}`
245			`add r2, sp, #8`
246			`UNWIND .pad #16`
247			`sub sp, sp, #16`
248			`str sp, [sp, #8]`
249			`add r1, sp, #8`
250			`bl ffi_closure_SYSV_inner`
251			`cmp r0, #FFI_TYPE_INT`
252			`beq .Lretint`
253
254			`cmp r0, #FFI_TYPE_FLOAT`
255			`#if defined(__SOFTFP__) \|\| defined(__ARM_EABI__)`
256			`beq .Lretint`
257			`#else`
258			`beq .Lretfloat`
259			`#endif`
260
261			`cmp r0, #FFI_TYPE_DOUBLE`
262			`#if defined(__SOFTFP__) \|\| defined(__ARM_EABI__)`
263			`beq .Lretlonglong`
264			`#else`
265			`beq .Lretdouble`
266			`#endif`
267
268			`cmp r0, #FFI_TYPE_LONGDOUBLE`
269			`#if defined(__SOFTFP__) \|\| defined(__ARM_EABI__)`
270			`beq .Lretlonglong`
271			`#else`
272			`beq .Lretlongdouble`
273			`#endif`
274
275			`cmp r0, #FFI_TYPE_SINT64`
276			`beq .Lretlonglong`
277			`.Lclosure_epilogue:`
278			`add sp, sp, #16`
279			`ldmfd sp, {sp, pc}`
280			`.Lretint:`
281			`ldr r0, [sp]`
282			`b .Lclosure_epilogue`
283			`.Lretlonglong:`
284			`ldr r0, [sp]`
285			`ldr r1, [sp, #4]`
286			`b .Lclosure_epilogue`
287
288			`#if !defined(__SOFTFP__) && !defined(__ARM_EABI__)`
289			`.Lretfloat:`
290			`ldfs f0, [sp]`
291			`b .Lclosure_epilogue`
292			`.Lretdouble:`
293			`ldfd f0, [sp]`
294			`b .Lclosure_epilogue`
295			`.Lretlongdouble:`
296			`ldfd f0, [sp]`
297			`b .Lclosure_epilogue`
298			`#endif`
299
300			`.ffi_closure_SYSV_end:`
301			`UNWIND .fnend`
302			`.size CNAME(ffi_closure_SYSV),.ffi_closure_SYSV_end-CNAME(ffi_closure_SYSV)`
303
304
305			`/* Below are VFP hard-float ABI call and closure implementations.`
306			`Add VFP FPU directive here. */`
307			`.fpu vfp`
308
309			`@ r0: fn`
310			`@ r1: &ecif`
311			`@ r2: cif->bytes`
312			`@ r3: fig->flags`
313			`@ sp+0: ecif.rvalue`
314
315			`ARM_FUNC_START ffi_call_VFP`
316			`@ Save registers`
317			`stmfd sp!, {r0-r3, fp, lr}`
318			`UNWIND .save {r0-r3, fp, lr}`
319			`mov fp, sp`
320			`UNWIND .setfp fp, sp`
321
322			`@ Make room for all of the new args.`
323			`sub sp, sp, r2`
324
325			`@ Make room for loading VFP args`
326			`sub sp, sp, #64`
327
328			`@ Place all of the ffi_prep_args in position`
329			`mov r0, sp`
330			`@ r1 already set`
331			`sub r2, fp, #64 @ VFP scratch space`
332
333			`@ Call ffi_prep_args(stack, &ecif, vfp_space)`
334			`bl ffi_prep_args`
335
336			`@ Load VFP register args if needed`
337			`cmp r0, #0`
338			`beq LSYM(Lbase_args)`
339
340			`@ Load only d0 if possible`
341			`cmp r0, #3`
342			`sub ip, fp, #64`
343			`flddle d0, [ip]`
344			`fldmiadgt ip, {d0-d7}`
345
346			`LSYM(Lbase_args):`
347			`@ move first 4 parameters in registers`
348			`ldmia sp, {r0-r3}`
349
350			`@ and adjust stack`
351			`sub lr, ip, sp @ cif->bytes == (fp - 64) - sp`
352			`ldr ip, [fp] @ load fn() in advance`
353			`cmp lr, #16`
354			`movhs lr, #16`
355			`add sp, sp, lr`
356
357			`@ call (fn) (...)`
358			`call_reg(ip)`
359
360			`@ Remove the space we pushed for the args`
361			`mov sp, fp`
362
363			`@ Load r2 with the pointer to storage for`
364			`@ the return value`
365			`ldr r2, [sp, #24]`
366
367			`@ Load r3 with the return type code`
368			`ldr r3, [sp, #12]`
369
370			`@ If the return value pointer is NULL,`
371			`@ assume no return value.`
372			`cmp r2, #0`
373			`beq LSYM(Lepilogue_vfp)`
374
375			`cmp r3, #FFI_TYPE_INT`
376			`streq r0, [r2]`
377			`beq LSYM(Lepilogue_vfp)`
378
379			`cmp r3, #FFI_TYPE_SINT64`
380			`stmeqia r2, {r0, r1}`
381			`beq LSYM(Lepilogue_vfp)`
382
383			`cmp r3, #FFI_TYPE_FLOAT`
384			`fstseq s0, [r2]`
385			`beq LSYM(Lepilogue_vfp)`
386
387			`cmp r3, #FFI_TYPE_DOUBLE`
388			`fstdeq d0, [r2]`
389			`beq LSYM(Lepilogue_vfp)`
390
391			`cmp r3, #FFI_TYPE_STRUCT_VFP_FLOAT`
392			`cmpne r3, #FFI_TYPE_STRUCT_VFP_DOUBLE`
393			`fstmiadeq r2, {d0-d3}`
394
395			`LSYM(Lepilogue_vfp):`
396			`RETLDM "r0-r3,fp"`
397
398			`.ffi_call_VFP_end:`
399			`UNWIND .fnend`
400			`.size CNAME(ffi_call_VFP),.ffi_call_VFP_end-CNAME(ffi_call_VFP)`
401
402
403			`ARM_FUNC_START ffi_closure_VFP`
404			`fstmfdd sp!, {d0-d7}`
405			`@ r0-r3, then d0-d7`
406			`UNWIND .pad #80`
407			`add ip, sp, #80`
408			`stmfd sp!, {ip, lr}`
409			`UNWIND .save {r0, lr}`
410			`add r2, sp, #72`
411			`add r3, sp, #8`
412			`UNWIND .pad #72`
413			`sub sp, sp, #72`
414			`str sp, [sp, #64]`
415			`add r1, sp, #64`
416			`bl ffi_closure_SYSV_inner`
417
418			`cmp r0, #FFI_TYPE_INT`
419			`beq .Lretint_vfp`
420
421			`cmp r0, #FFI_TYPE_FLOAT`
422			`beq .Lretfloat_vfp`
423
424			`cmp r0, #FFI_TYPE_DOUBLE`
425			`cmpne r0, #FFI_TYPE_LONGDOUBLE`
426			`beq .Lretdouble_vfp`
427
428			`cmp r0, #FFI_TYPE_SINT64`
429			`beq .Lretlonglong_vfp`
430
431			`cmp r0, #FFI_TYPE_STRUCT_VFP_FLOAT`
432			`beq .Lretfloat_struct_vfp`
433
434			`cmp r0, #FFI_TYPE_STRUCT_VFP_DOUBLE`
435			`beq .Lretdouble_struct_vfp`
436
437			`.Lclosure_epilogue_vfp:`
438			`add sp, sp, #72`
439			`ldmfd sp, {sp, pc}`
440
441			`.Lretfloat_vfp:`
442			`flds s0, [sp]`
443			`b .Lclosure_epilogue_vfp`
444			`.Lretdouble_vfp:`
445			`fldd d0, [sp]`
446			`b .Lclosure_epilogue_vfp`
447			`.Lretint_vfp:`
448			`ldr r0, [sp]`
449			`b .Lclosure_epilogue_vfp`
450			`.Lretlonglong_vfp:`
451			`ldmia sp, {r0, r1}`
452			`b .Lclosure_epilogue_vfp`
453			`.Lretfloat_struct_vfp:`
454			`fldmiad sp, {d0-d1}`
455			`b .Lclosure_epilogue_vfp`
456			`.Lretdouble_struct_vfp:`
457			`fldmiad sp, {d0-d3}`
458			`b .Lclosure_epilogue_vfp`
459
460			`.ffi_closure_VFP_end:`
461			`UNWIND .fnend`
462			`.size CNAME(ffi_closure_VFP),.ffi_closure_VFP_end-CNAME(ffi_closure_VFP)`
463
464			`ENTRY(ffi_arm_trampoline)`
465			`stmfd sp!, {r0-r3}`
466			`ldr r0, [pc]`
467			`ldr pc, [pc]`
468
469			`#if defined __ELF__ && defined __linux__`
470			`.section .note.GNU-stack,"",%progbits`
471			`#endif`