/[pcre]/code/trunk/sljit/sljitNativePPC_32.c
ViewVC logotype

Contents of /code/trunk/sljit/sljitNativePPC_32.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1195 - (show annotations)
Thu Nov 1 15:21:27 2012 UTC (6 years, 10 months ago) by zherczeg
File MIME type: text/plain
File size: 10065 byte(s)
Error occurred while calculating annotation data.
Another huge JIT compiler update.
1 /*
2 * Stack-less Just-In-Time compiler
3 *
4 * Copyright 2009-2012 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without modification, are
7 * permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice, this list of
10 * conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
13 * of conditions and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19 * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
21 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
22 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 /* ppc 32-bit arch dependent functions. */
28
29 static sljit_si load_immediate(struct sljit_compiler *compiler, sljit_si reg, sljit_sw imm)
30 {
31 if (imm <= SIMM_MAX && imm >= SIMM_MIN)
32 return push_inst(compiler, ADDI | D(reg) | A(0) | IMM(imm));
33
34 if (!(imm & ~0xffff))
35 return push_inst(compiler, ORI | S(ZERO_REG) | A(reg) | IMM(imm));
36
37 FAIL_IF(push_inst(compiler, ADDIS | D(reg) | A(0) | IMM(imm >> 16)));
38 return (imm & 0xffff) ? push_inst(compiler, ORI | S(reg) | A(reg) | IMM(imm)) : SLJIT_SUCCESS;
39 }
40
41 #define INS_CLEAR_LEFT(dst, src, from) \
42 (RLWINM | S(src) | A(dst) | ((from) << 6) | (31 << 1))
43
44 static SLJIT_INLINE sljit_si emit_single_op(struct sljit_compiler *compiler, sljit_si op, sljit_si flags,
45 sljit_si dst, sljit_si src1, sljit_si src2)
46 {
47 switch (op) {
48 case SLJIT_MOV:
49 case SLJIT_MOV_UI:
50 case SLJIT_MOV_SI:
51 case SLJIT_MOV_P:
52 SLJIT_ASSERT(src1 == TMP_REG1);
53 if (dst != src2)
54 return push_inst(compiler, OR | S(src2) | A(dst) | B(src2));
55 return SLJIT_SUCCESS;
56
57 case SLJIT_MOV_UB:
58 case SLJIT_MOV_SB:
59 SLJIT_ASSERT(src1 == TMP_REG1);
60 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
61 if (op == SLJIT_MOV_SB)
62 return push_inst(compiler, EXTSB | S(src2) | A(dst));
63 return push_inst(compiler, INS_CLEAR_LEFT(dst, src2, 24));
64 }
65 else if ((flags & REG_DEST) && op == SLJIT_MOV_SB)
66 return push_inst(compiler, EXTSB | S(src2) | A(dst));
67 else {
68 SLJIT_ASSERT(dst == src2);
69 }
70 return SLJIT_SUCCESS;
71
72 case SLJIT_MOV_UH:
73 case SLJIT_MOV_SH:
74 SLJIT_ASSERT(src1 == TMP_REG1);
75 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
76 if (op == SLJIT_MOV_SH)
77 return push_inst(compiler, EXTSH | S(src2) | A(dst));
78 return push_inst(compiler, INS_CLEAR_LEFT(dst, src2, 16));
79 }
80 else {
81 SLJIT_ASSERT(dst == src2);
82 }
83 return SLJIT_SUCCESS;
84
85 case SLJIT_NOT:
86 SLJIT_ASSERT(src1 == TMP_REG1);
87 return push_inst(compiler, NOR | RC(flags) | S(src2) | A(dst) | B(src2));
88
89 case SLJIT_NEG:
90 SLJIT_ASSERT(src1 == TMP_REG1);
91 return push_inst(compiler, NEG | OERC(flags) | D(dst) | A(src2));
92
93 case SLJIT_CLZ:
94 SLJIT_ASSERT(src1 == TMP_REG1);
95 return push_inst(compiler, CNTLZW | RC(flags) | S(src2) | A(dst));
96
97 case SLJIT_ADD:
98 if (flags & ALT_FORM1) {
99 /* Flags does not set: BIN_IMM_EXTS unnecessary. */
100 SLJIT_ASSERT(src2 == TMP_REG2);
101 return push_inst(compiler, ADDI | D(dst) | A(src1) | compiler->imm);
102 }
103 if (flags & ALT_FORM2) {
104 /* Flags does not set: BIN_IMM_EXTS unnecessary. */
105 SLJIT_ASSERT(src2 == TMP_REG2);
106 return push_inst(compiler, ADDIS | D(dst) | A(src1) | compiler->imm);
107 }
108 if (flags & ALT_FORM3) {
109 SLJIT_ASSERT(src2 == TMP_REG2);
110 return push_inst(compiler, ADDIC | D(dst) | A(src1) | compiler->imm);
111 }
112 if (flags & ALT_FORM4) {
113 /* Flags does not set: BIN_IMM_EXTS unnecessary. */
114 FAIL_IF(push_inst(compiler, ADDI | D(dst) | A(src1) | (compiler->imm & 0xffff)));
115 return push_inst(compiler, ADDIS | D(dst) | A(dst) | (((compiler->imm >> 16) & 0xffff) + ((compiler->imm >> 15) & 0x1)));
116 }
117 if (!(flags & ALT_SET_FLAGS))
118 return push_inst(compiler, ADD | D(dst) | A(src1) | B(src2));
119 return push_inst(compiler, ADDC | OERC(ALT_SET_FLAGS) | D(dst) | A(src1) | B(src2));
120
121 case SLJIT_ADDC:
122 if (flags & ALT_FORM1) {
123 FAIL_IF(push_inst(compiler, MFXER | D(0)));
124 FAIL_IF(push_inst(compiler, ADDE | D(dst) | A(src1) | B(src2)));
125 return push_inst(compiler, MTXER | S(0));
126 }
127 return push_inst(compiler, ADDE | D(dst) | A(src1) | B(src2));
128
129 case SLJIT_SUB:
130 if (flags & ALT_FORM1) {
131 /* Flags does not set: BIN_IMM_EXTS unnecessary. */
132 SLJIT_ASSERT(src2 == TMP_REG2);
133 return push_inst(compiler, SUBFIC | D(dst) | A(src1) | compiler->imm);
134 }
135 if (flags & (ALT_FORM2 | ALT_FORM3)) {
136 SLJIT_ASSERT(src2 == TMP_REG2);
137 if (flags & ALT_FORM2)
138 FAIL_IF(push_inst(compiler, CMPI | CRD(0) | A(src1) | compiler->imm));
139 if (flags & ALT_FORM3)
140 return push_inst(compiler, CMPLI | CRD(4) | A(src1) | compiler->imm);
141 return SLJIT_SUCCESS;
142 }
143 if (flags & (ALT_FORM4 | ALT_FORM5)) {
144 if (flags & ALT_FORM4)
145 FAIL_IF(push_inst(compiler, CMPL | CRD(4) | A(src1) | B(src2)));
146 if (flags & ALT_FORM5)
147 FAIL_IF(push_inst(compiler, CMP | CRD(0) | A(src1) | B(src2)));
148 return SLJIT_SUCCESS;
149 }
150 if (!(flags & ALT_SET_FLAGS))
151 return push_inst(compiler, SUBF | D(dst) | A(src2) | B(src1));
152 if (flags & ALT_FORM6)
153 FAIL_IF(push_inst(compiler, CMPL | CRD(4) | A(src1) | B(src2)));
154 return push_inst(compiler, SUBFC | OERC(ALT_SET_FLAGS) | D(dst) | A(src2) | B(src1));
155
156 case SLJIT_SUBC:
157 if (flags & ALT_FORM1) {
158 FAIL_IF(push_inst(compiler, MFXER | D(0)));
159 FAIL_IF(push_inst(compiler, SUBFE | D(dst) | A(src2) | B(src1)));
160 return push_inst(compiler, MTXER | S(0));
161 }
162 return push_inst(compiler, SUBFE | D(dst) | A(src2) | B(src1));
163
164 case SLJIT_MUL:
165 if (flags & ALT_FORM1) {
166 SLJIT_ASSERT(src2 == TMP_REG2);
167 return push_inst(compiler, MULLI | D(dst) | A(src1) | compiler->imm);
168 }
169 return push_inst(compiler, MULLW | OERC(flags) | D(dst) | A(src2) | B(src1));
170
171 case SLJIT_AND:
172 if (flags & ALT_FORM1) {
173 SLJIT_ASSERT(src2 == TMP_REG2);
174 return push_inst(compiler, ANDI | S(src1) | A(dst) | compiler->imm);
175 }
176 if (flags & ALT_FORM2) {
177 SLJIT_ASSERT(src2 == TMP_REG2);
178 return push_inst(compiler, ANDIS | S(src1) | A(dst) | compiler->imm);
179 }
180 return push_inst(compiler, AND | RC(flags) | S(src1) | A(dst) | B(src2));
181
182 case SLJIT_OR:
183 if (flags & ALT_FORM1) {
184 SLJIT_ASSERT(src2 == TMP_REG2);
185 return push_inst(compiler, ORI | S(src1) | A(dst) | compiler->imm);
186 }
187 if (flags & ALT_FORM2) {
188 SLJIT_ASSERT(src2 == TMP_REG2);
189 return push_inst(compiler, ORIS | S(src1) | A(dst) | compiler->imm);
190 }
191 if (flags & ALT_FORM3) {
192 SLJIT_ASSERT(src2 == TMP_REG2);
193 FAIL_IF(push_inst(compiler, ORI | S(src1) | A(dst) | IMM(compiler->imm)));
194 return push_inst(compiler, ORIS | S(dst) | A(dst) | IMM(compiler->imm >> 16));
195 }
196 return push_inst(compiler, OR | RC(flags) | S(src1) | A(dst) | B(src2));
197
198 case SLJIT_XOR:
199 if (flags & ALT_FORM1) {
200 SLJIT_ASSERT(src2 == TMP_REG2);
201 return push_inst(compiler, XORI | S(src1) | A(dst) | compiler->imm);
202 }
203 if (flags & ALT_FORM2) {
204 SLJIT_ASSERT(src2 == TMP_REG2);
205 return push_inst(compiler, XORIS | S(src1) | A(dst) | compiler->imm);
206 }
207 if (flags & ALT_FORM3) {
208 SLJIT_ASSERT(src2 == TMP_REG2);
209 FAIL_IF(push_inst(compiler, XORI | S(src1) | A(dst) | IMM(compiler->imm)));
210 return push_inst(compiler, XORIS | S(dst) | A(dst) | IMM(compiler->imm >> 16));
211 }
212 return push_inst(compiler, XOR | RC(flags) | S(src1) | A(dst) | B(src2));
213
214 case SLJIT_SHL:
215 if (flags & ALT_FORM1) {
216 SLJIT_ASSERT(src2 == TMP_REG2);
217 compiler->imm &= 0x1f;
218 return push_inst(compiler, RLWINM | RC(flags) | S(src1) | A(dst) | (compiler->imm << 11) | ((31 - compiler->imm) << 1));
219 }
220 return push_inst(compiler, SLW | RC(flags) | S(src1) | A(dst) | B(src2));
221
222 case SLJIT_LSHR:
223 if (flags & ALT_FORM1) {
224 SLJIT_ASSERT(src2 == TMP_REG2);
225 compiler->imm &= 0x1f;
226 return push_inst(compiler, RLWINM | RC(flags) | S(src1) | A(dst) | (((32 - compiler->imm) & 0x1f) << 11) | (compiler->imm << 6) | (31 << 1));
227 }
228 return push_inst(compiler, SRW | RC(flags) | S(src1) | A(dst) | B(src2));
229
230 case SLJIT_ASHR:
231 if (flags & ALT_FORM3)
232 FAIL_IF(push_inst(compiler, MFXER | D(0)));
233 if (flags & ALT_FORM1) {
234 SLJIT_ASSERT(src2 == TMP_REG2);
235 compiler->imm &= 0x1f;
236 FAIL_IF(push_inst(compiler, SRAWI | RC(flags) | S(src1) | A(dst) | (compiler->imm << 11)));
237 }
238 else
239 FAIL_IF(push_inst(compiler, SRAW | RC(flags) | S(src1) | A(dst) | B(src2)));
240 return (flags & ALT_FORM3) ? push_inst(compiler, MTXER | S(0)) : SLJIT_SUCCESS;
241 }
242
243 SLJIT_ASSERT_STOP();
244 return SLJIT_SUCCESS;
245 }
246
247 static SLJIT_INLINE sljit_si emit_const(struct sljit_compiler *compiler, sljit_si reg, sljit_sw init_value)
248 {
249 FAIL_IF(push_inst(compiler, ADDIS | D(reg) | A(0) | IMM(init_value >> 16)));
250 return push_inst(compiler, ORI | S(reg) | A(reg) | IMM(init_value));
251 }
252
253 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
254 {
255 sljit_ins *inst = (sljit_ins*)addr;
256
257 inst[0] = (inst[0] & 0xffff0000) | ((new_addr >> 16) & 0xffff);
258 inst[1] = (inst[1] & 0xffff0000) | (new_addr & 0xffff);
259 SLJIT_CACHE_FLUSH(inst, inst + 2);
260 }
261
262 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant)
263 {
264 sljit_ins *inst = (sljit_ins*)addr;
265
266 inst[0] = (inst[0] & 0xffff0000) | ((new_constant >> 16) & 0xffff);
267 inst[1] = (inst[1] & 0xffff0000) | (new_constant & 0xffff);
268 SLJIT_CACHE_FLUSH(inst, inst + 2);
269 }

  ViewVC Help
Powered by ViewVC 1.1.5