/[pcre]/code/trunk/sljit/sljitNativePPC_32.c
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Contents of /code/trunk/sljit/sljitNativePPC_32.c

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Revision 860 - (show annotations)
Mon Jan 9 20:12:58 2012 UTC (7 years, 7 months ago) by zherczeg
File MIME type: text/plain
File size: 9837 byte(s)
rename PCRE_SCHAR16 to PCRE_UCHAR16 and 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 int load_immediate(struct sljit_compiler *compiler, int reg, sljit_w 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 int emit_single_op(struct sljit_compiler *compiler, int op, int flags,
45 int dst, int src1, int src2)
46 {
47 switch (op) {
48 case SLJIT_ADD:
49 if (flags & ALT_FORM1) {
50 /* Flags does not set: BIN_IMM_EXTS unnecessary. */
51 SLJIT_ASSERT(src2 == TMP_REG2);
52 return push_inst(compiler, ADDI | D(dst) | A(src1) | compiler->imm);
53 }
54 if (flags & ALT_FORM2) {
55 /* Flags does not set: BIN_IMM_EXTS unnecessary. */
56 SLJIT_ASSERT(src2 == TMP_REG2);
57 return push_inst(compiler, ADDIS | D(dst) | A(src1) | compiler->imm);
58 }
59 if (flags & ALT_FORM3) {
60 SLJIT_ASSERT(src2 == TMP_REG2);
61 return push_inst(compiler, ADDIC | D(dst) | A(src1) | compiler->imm);
62 }
63 if (flags & ALT_FORM4) {
64 /* Flags does not set: BIN_IMM_EXTS unnecessary. */
65 FAIL_IF(push_inst(compiler, ADDI | D(dst) | A(src1) | (compiler->imm & 0xffff)));
66 return push_inst(compiler, ADDIS | D(dst) | A(dst) | (((compiler->imm >> 16) & 0xffff) + ((compiler->imm >> 15) & 0x1)));
67 }
68 if (!(flags & ALT_SET_FLAGS))
69 return push_inst(compiler, ADD | D(dst) | A(src1) | B(src2));
70 return push_inst(compiler, ADDC | OERC(ALT_SET_FLAGS) | D(dst) | A(src1) | B(src2));
71
72 case SLJIT_ADDC:
73 if (flags & ALT_FORM1) {
74 FAIL_IF(push_inst(compiler, MFXER | S(0)));
75 FAIL_IF(push_inst(compiler, ADDE | D(dst) | A(src1) | B(src2)));
76 return push_inst(compiler, MTXER | S(0));
77 }
78 return push_inst(compiler, ADDE | D(dst) | A(src1) | B(src2));
79
80 case SLJIT_SUB:
81 if (flags & ALT_FORM1) {
82 /* Flags does not set: BIN_IMM_EXTS unnecessary. */
83 SLJIT_ASSERT(src2 == TMP_REG2);
84 return push_inst(compiler, SUBFIC | D(dst) | A(src1) | compiler->imm);
85 }
86 if (flags & (ALT_FORM2 | ALT_FORM3)) {
87 SLJIT_ASSERT(src2 == TMP_REG2);
88 if (flags & ALT_FORM2)
89 FAIL_IF(push_inst(compiler, CMPI | CRD(0) | A(src1) | compiler->imm));
90 if (flags & ALT_FORM3)
91 return push_inst(compiler, CMPLI | CRD(4) | A(src1) | compiler->imm);
92 return SLJIT_SUCCESS;
93 }
94 if (flags & (ALT_FORM4 | ALT_FORM5)) {
95 if (flags & ALT_FORM4)
96 FAIL_IF(push_inst(compiler, CMPL | CRD(4) | A(src1) | B(src2)));
97 if (flags & ALT_FORM5)
98 FAIL_IF(push_inst(compiler, CMP | CRD(0) | A(src1) | B(src2)));
99 return SLJIT_SUCCESS;
100 }
101 if (!(flags & ALT_SET_FLAGS))
102 return push_inst(compiler, SUBF | D(dst) | A(src2) | B(src1));
103 if (flags & ALT_FORM6)
104 FAIL_IF(push_inst(compiler, CMPL | CRD(4) | A(src1) | B(src2)));
105 return push_inst(compiler, SUBFC | OERC(ALT_SET_FLAGS) | D(dst) | A(src2) | B(src1));
106
107 case SLJIT_SUBC:
108 if (flags & ALT_FORM1) {
109 FAIL_IF(push_inst(compiler, MFXER | S(0)));
110 FAIL_IF(push_inst(compiler, SUBFE | D(dst) | A(src2) | B(src1)));
111 return push_inst(compiler, MTXER | S(0));
112 }
113 return push_inst(compiler, SUBFE | D(dst) | A(src2) | B(src1));
114
115 case SLJIT_MUL:
116 if (flags & ALT_FORM1) {
117 SLJIT_ASSERT(src2 == TMP_REG2);
118 return push_inst(compiler, MULLI | D(dst) | A(src1) | compiler->imm);
119 }
120 return push_inst(compiler, MULLW | OERC(flags) | D(dst) | A(src2) | B(src1));
121
122 case SLJIT_AND:
123 if (flags & ALT_FORM1) {
124 SLJIT_ASSERT(src2 == TMP_REG2);
125 return push_inst(compiler, ANDI | S(src1) | A(dst) | compiler->imm);
126 }
127 if (flags & ALT_FORM2) {
128 SLJIT_ASSERT(src2 == TMP_REG2);
129 return push_inst(compiler, ANDIS | S(src1) | A(dst) | compiler->imm);
130 }
131 return push_inst(compiler, AND | RC(flags) | S(src1) | A(dst) | B(src2));
132
133 case SLJIT_OR:
134 if (flags & ALT_FORM1) {
135 SLJIT_ASSERT(src2 == TMP_REG2);
136 return push_inst(compiler, ORI | S(src1) | A(dst) | compiler->imm);
137 }
138 if (flags & ALT_FORM2) {
139 SLJIT_ASSERT(src2 == TMP_REG2);
140 return push_inst(compiler, ORIS | S(src1) | A(dst) | compiler->imm);
141 }
142 if (flags & ALT_FORM3) {
143 SLJIT_ASSERT(src2 == TMP_REG2);
144 FAIL_IF(push_inst(compiler, ORI | S(src1) | A(dst) | IMM(compiler->imm)));
145 return push_inst(compiler, ORIS | S(dst) | A(dst) | IMM(compiler->imm >> 16));
146 }
147 return push_inst(compiler, OR | RC(flags) | S(src1) | A(dst) | B(src2));
148
149 case SLJIT_XOR:
150 if (flags & ALT_FORM1) {
151 SLJIT_ASSERT(src2 == TMP_REG2);
152 return push_inst(compiler, XORI | S(src1) | A(dst) | compiler->imm);
153 }
154 if (flags & ALT_FORM2) {
155 SLJIT_ASSERT(src2 == TMP_REG2);
156 return push_inst(compiler, XORIS | S(src1) | A(dst) | compiler->imm);
157 }
158 if (flags & ALT_FORM3) {
159 SLJIT_ASSERT(src2 == TMP_REG2);
160 FAIL_IF(push_inst(compiler, XORI | S(src1) | A(dst) | IMM(compiler->imm)));
161 return push_inst(compiler, XORIS | S(dst) | A(dst) | IMM(compiler->imm >> 16));
162 }
163 return push_inst(compiler, XOR | RC(flags) | S(src1) | A(dst) | B(src2));
164
165 case SLJIT_SHL:
166 if (flags & ALT_FORM1) {
167 SLJIT_ASSERT(src2 == TMP_REG2);
168 compiler->imm &= 0x1f;
169 return push_inst(compiler, RLWINM | RC(flags) | S(src1) | A(dst) | (compiler->imm << 11) | ((31 - compiler->imm) << 1));
170 }
171 return push_inst(compiler, SLW | RC(flags) | S(src1) | A(dst) | B(src2));
172
173 case SLJIT_LSHR:
174 if (flags & ALT_FORM1) {
175 SLJIT_ASSERT(src2 == TMP_REG2);
176 compiler->imm &= 0x1f;
177 return push_inst(compiler, RLWINM | RC(flags) | S(src1) | A(dst) | (((32 - compiler->imm) & 0x1f) << 11) | (compiler->imm << 6) | (31 << 1));
178 }
179 return push_inst(compiler, SRW | RC(flags) | S(src1) | A(dst) | B(src2));
180
181 case SLJIT_ASHR:
182 if (flags & ALT_FORM1) {
183 SLJIT_ASSERT(src2 == TMP_REG2);
184 compiler->imm &= 0x1f;
185 return push_inst(compiler, SRAWI | RC(flags) | S(src1) | A(dst) | (compiler->imm << 11));
186 }
187 return push_inst(compiler, SRAW | RC(flags) | S(src1) | A(dst) | B(src2));
188
189 case SLJIT_MOV:
190 case SLJIT_MOV_UI:
191 case SLJIT_MOV_SI:
192 SLJIT_ASSERT(src1 == TMP_REG1);
193 if (dst != src2)
194 return push_inst(compiler, OR | S(src2) | A(dst) | B(src2));
195 return SLJIT_SUCCESS;
196
197 case SLJIT_MOV_UB:
198 case SLJIT_MOV_SB:
199 SLJIT_ASSERT(src1 == TMP_REG1);
200 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
201 if (op == SLJIT_MOV_SB)
202 return push_inst(compiler, EXTSB | S(src2) | A(dst));
203 return push_inst(compiler, INS_CLEAR_LEFT(dst, src2, 24));
204 }
205 else if ((flags & REG_DEST) && op == SLJIT_MOV_SB)
206 return push_inst(compiler, EXTSB | S(src2) | A(dst));
207 else if (dst != src2)
208 SLJIT_ASSERT_STOP();
209 return SLJIT_SUCCESS;
210
211 case SLJIT_MOV_UH:
212 case SLJIT_MOV_SH:
213 SLJIT_ASSERT(src1 == TMP_REG1);
214 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
215 if (op == SLJIT_MOV_SH)
216 return push_inst(compiler, EXTSH | S(src2) | A(dst));
217 return push_inst(compiler, INS_CLEAR_LEFT(dst, src2, 16));
218 }
219 else if (dst != src2)
220 SLJIT_ASSERT_STOP();
221 return SLJIT_SUCCESS;
222
223 case SLJIT_NOT:
224 SLJIT_ASSERT(src1 == TMP_REG1);
225 return push_inst(compiler, NOR | RC(flags) | S(src2) | A(dst) | B(src2));
226
227 case SLJIT_NEG:
228 SLJIT_ASSERT(src1 == TMP_REG1);
229 return push_inst(compiler, NEG | OERC(flags) | D(dst) | A(src2));
230
231 case SLJIT_CLZ:
232 SLJIT_ASSERT(src1 == TMP_REG1);
233 return push_inst(compiler, CNTLZW | RC(flags) | S(src2) | A(dst));
234 }
235
236 SLJIT_ASSERT_STOP();
237 return SLJIT_SUCCESS;
238 }
239
240 static SLJIT_INLINE int emit_const(struct sljit_compiler *compiler, int reg, sljit_w init_value)
241 {
242 FAIL_IF(push_inst(compiler, ADDIS | D(reg) | A(0) | IMM(init_value >> 16)));
243 return push_inst(compiler, ORI | S(reg) | A(reg) | IMM(init_value));
244 }
245
246 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
247 {
248 sljit_ins *inst = (sljit_ins*)addr;
249
250 inst[0] = (inst[0] & 0xffff0000) | ((new_addr >> 16) & 0xffff);
251 inst[1] = (inst[1] & 0xffff0000) | (new_addr & 0xffff);
252 SLJIT_CACHE_FLUSH(inst, inst + 2);
253 }
254
255 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_w new_constant)
256 {
257 sljit_ins *inst = (sljit_ins*)addr;
258
259 inst[0] = (inst[0] & 0xffff0000) | ((new_constant >> 16) & 0xffff);
260 inst[1] = (inst[1] & 0xffff0000) | (new_constant & 0xffff);
261 SLJIT_CACHE_FLUSH(inst, inst + 2);
262 }

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