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comparison dyncall/dyncall_callvm_mips_o32.c @ 0:3e629dc19168

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initial from svn dyncall-1745
author Daniel Adler
date Thu, 19 Mar 2015 22:24:28 +0100
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children 67961454902b
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-1:000000000000 0:3e629dc19168
1 /*
2
3 Package: dyncall
4 Library: dyncall
5 File: dyncall/dyncall_callvm_mips_o32.c
6 Description: mips "o32" ABI callvm implementation
7 License:
8
9 Copyright (c) 2007-2015 Daniel Adler <dadler@uni-goettingen.de>,
10 Tassilo Philipp <tphilipp@potion-studios.com>
11
12 Permission to use, copy, modify, and distribute this software for any
13 purpose with or without fee is hereby granted, provided that the above
14 copyright notice and this permission notice appear in all copies.
15
16 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
17 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
18 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
19 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
20 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
21 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
22 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23
24 */
25
26
27
28 /*
29
30 dyncall callvm for mips o32 abi
31
32 REVISION
33 2010/06/03 initial
34
35 NOTES:
36 we need an argument counter for supporting floating point arguments
37 correctly.
38
39 first two (if any) double/float arguments are mapped via a common structure --
40 code must take care to write the right float argument indices which
41 differs on C and Assembly-side depending on endianness. (therefore
42 both sources have two variants 'mipseb' and 'mipsel'.)
43 (only for the first two float/double arguments) see float/double handling
44
45 although, the abi does not expect usage of floats if first argument is
46 not floating point, the call kernel can be used universal for all cases.
47
48 */
49
50
51 #include "dyncall_callvm_mips_o32.h"
52 #include "dyncall_alloc.h"
53 #include "dyncall_utils.h"
54
55
56 static void dc_callvm_reset_mips_o32(DCCallVM* in_self)
57 {
58 DCCallVM_mips_o32* self = (DCCallVM_mips_o32*)in_self;
59 dcVecReset(&self->mVecHead);
60 self->mArgCount = 0;
61 }
62
63 static DCCallVM* dc_callvm_new_mips_o32(DCCallVM_vt* vt, DCsize size)
64 {
65 DCCallVM_mips_o32* self = (DCCallVM_mips_o32*)dcAllocMem(sizeof(DCCallVM_mips_o32)+size);
66 dc_callvm_base_init(&self->mInterface, vt);
67 dcVecInit(&self->mVecHead, size);
68 dc_callvm_reset_mips_o32( (DCCallVM*) self );
69 return (DCCallVM*)self;
70 }
71
72
73 static void dc_callvm_free_mips_o32(DCCallVM* in_self)
74 {
75 dcFreeMem(in_self);
76 }
77
78 static void dc_callvm_mode_mips_o32(DCCallVM* self, DCint mode)
79 {
80 switch(mode) {
81 case DC_CALL_C_DEFAULT:
82 case DC_CALL_C_ELLIPSIS:
83 case DC_CALL_C_MIPS32_O32:
84 break;
85 default:
86 self->mError = DC_ERROR_UNSUPPORTED_MODE;
87 break;
88 }
89 }
90
91 /* arg int -- fillup integer register file OR push on stack */
92
93 static void dc_callvm_argInt_mips_o32(DCCallVM* in_self, DCint i)
94 {
95 DCCallVM_mips_o32* self = (DCCallVM_mips_o32*)in_self;
96 dcVecAppend(&self->mVecHead, &i, sizeof(DCint));
97 self->mArgCount++;
98 }
99
100 static void dc_callvm_argPointer_mips_o32(DCCallVM* in_self, DCpointer x)
101 {
102 dc_callvm_argInt_mips_o32(in_self, * (DCint*) &x );
103 }
104
105 static void dc_callvm_argBool_mips_o32(DCCallVM* in_self, DCbool x)
106 {
107 dc_callvm_argInt_mips_o32(in_self, (DCint)x);
108 }
109
110 static void dc_callvm_argChar_mips_o32(DCCallVM* in_self, DCchar x)
111 {
112 dc_callvm_argInt_mips_o32(in_self, (DCint)x);
113 }
114
115 static void dc_callvm_argShort_mips_o32(DCCallVM* in_self, DCshort x)
116 {
117 dc_callvm_argInt_mips_o32(in_self, (DCint)x);
118 }
119
120 static void dc_callvm_argLong_mips_o32(DCCallVM* in_self, DClong x)
121 {
122 dc_callvm_argInt_mips_o32(in_self, (DCint)x);
123 }
124
125 static void dc_callvm_argLongLong_mips_o32(DCCallVM* in_self, DClonglong Lv)
126 {
127 DCCallVM_mips_o32* self = (DCCallVM_mips_o32*)in_self;
128
129 /* 64-bit values need to be aligned on 8 byte boundaries */
130 dcVecSkip(&self->mVecHead, dcVecSize(&self->mVecHead) & 4);
131 dcVecAppend(&self->mVecHead, &Lv, sizeof(DClonglong));
132 self->mArgCount += 1;
133 }
134
135 static void dc_callvm_argFloat_mips_o32(DCCallVM* in_self, DCfloat x)
136 {
137 DCCallVM_mips_o32* self = (DCCallVM_mips_o32*)in_self;
138
139 dcVecAppend(&self->mVecHead, &x, sizeof(DCfloat) );
140 if (self->mArgCount < 2) {
141 #if defined(__MIPSEL__)
142 self->mRegData.u[self->mArgCount].f[0] = x;
143 #else
144 self->mRegData.u[self->mArgCount].f[1] = x;
145 #endif
146 #if 0
147 self->mRegData.u[self->mArgCount].f[1] = x;
148 call kernel
149
150 mips:
151 lwc1 $f12, 4($5) <--- byte offset 4
152 lwc1 $f13, 0($5)
153 lwc1 $f14, 12($5) <--- byte offset 12
154 lwc1 $f15, 8($5)
155 mipsel:
156 lwc1 $f12, 0($5) <--- byte offset 4
157 lwc1 $f13, 4($5)
158 lwc1 $f14, 8($5) <--- byte offset 12
159 lwc1 $f15, 12($5)
160
161 #if defined(__MIPSEL__)
162 /* index 0 and 2 */
163 self->mRegData.floats[self->mArgCount*2] = x;
164 #else
165 /* index 1 and 3 */
166 self->mRegData.floats[self->mArgCount*2+1] = x;
167 #endif
168 #endif
169 }
170 self->mArgCount++;
171 }
172
173 static void dc_callvm_argDouble_mips_o32(DCCallVM* in_self, DCdouble x)
174 {
175 DCCallVM_mips_o32* self = (DCCallVM_mips_o32*)in_self;
176 /* 64-bit values need to be aligned on 8 byte boundaries */
177 dcVecSkip(&self->mVecHead, dcVecSize(&self->mVecHead) & 4);
178 dcVecAppend(&self->mVecHead, &x, sizeof(DCdouble) );
179 if (self->mArgCount < 2)
180 self->mRegData.u[self->mArgCount].d = x;
181 self->mArgCount++;
182 }
183
184 /* Call. */
185 void dc_callvm_call_mips_o32(DCCallVM* in_self, DCpointer target)
186 {
187 DCCallVM_mips_o32* self = (DCCallVM_mips_o32*)in_self;
188 /* at minimum provide 16-bytes
189 which hold the first four integer register as spill area
190 and are automatically loaded to $4-$7
191 */
192
193 size_t size = DC_MAX(16, ( ( (unsigned) dcVecSize(&self->mVecHead) ) +7UL ) & (-8UL) );
194
195 dcCall_mips_o32(target, &self->mRegData, size, dcVecData(&self->mVecHead));
196 }
197
198 DCCallVM_vt gVT_mips_o32 =
199 {
200 &dc_callvm_free_mips_o32
201 , &dc_callvm_reset_mips_o32
202 , &dc_callvm_mode_mips_o32
203 , &dc_callvm_argBool_mips_o32
204 , &dc_callvm_argChar_mips_o32
205 , &dc_callvm_argShort_mips_o32
206 , &dc_callvm_argInt_mips_o32
207 , &dc_callvm_argLong_mips_o32
208 , &dc_callvm_argLongLong_mips_o32
209 , &dc_callvm_argFloat_mips_o32
210 , &dc_callvm_argDouble_mips_o32
211 , &dc_callvm_argPointer_mips_o32
212 , NULL /* argStruct */
213 , (DCvoidvmfunc*) &dc_callvm_call_mips_o32
214 , (DCboolvmfunc*) &dc_callvm_call_mips_o32
215 , (DCcharvmfunc*) &dc_callvm_call_mips_o32
216 , (DCshortvmfunc*) &dc_callvm_call_mips_o32
217 , (DCintvmfunc*) &dc_callvm_call_mips_o32
218 , (DClongvmfunc*) &dc_callvm_call_mips_o32
219 , (DClonglongvmfunc*) &dc_callvm_call_mips_o32
220 , (DCfloatvmfunc*) &dc_callvm_call_mips_o32
221 , (DCdoublevmfunc*) &dc_callvm_call_mips_o32
222 , (DCpointervmfunc*) &dc_callvm_call_mips_o32
223 , NULL /* callStruct */
224 };
225
226 DCCallVM* dcNewCallVM_mips_o32(DCsize size)
227 {
228 return dc_callvm_new_mips_o32(&gVT_mips_o32, size);
229 }
230
231
232 DCCallVM* dcNewCallVM(DCsize size)
233 {
234 return dcNewCallVM_mips_o32(size);
235 }
236