1 /* $NetBSD: sljitNativeSPARC_32.c,v 1.4 2019/01/20 23:14:16 alnsn Exp $ */
2
3 /*
4 * Stack-less Just-In-Time compiler
5 *
6 * Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without modification, are
9 * permitted provided that the following conditions are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright notice, this list of
12 * conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
15 * of conditions and the following disclaimer in the documentation and/or other materials
16 * provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
21 * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
23 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
26 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
load_immediate(struct sljit_compiler * compiler,sljit_s32 dst,sljit_sw imm)29 static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw imm)
30 {
31 if (imm <= SIMM_MAX && imm >= SIMM_MIN)
32 return push_inst(compiler, OR | D(dst) | S1(0) | IMM(imm), DR(dst));
33
34 FAIL_IF(push_inst(compiler, SETHI | D(dst) | ((imm >> 10) & 0x3fffff), DR(dst)));
35 return (imm & 0x3ff) ? push_inst(compiler, OR | D(dst) | S1(dst) | IMM_ARG | (imm & 0x3ff), DR(dst)) : SLJIT_SUCCESS;
36 }
37
38 #define ARG2(flags, src2) ((flags & SRC2_IMM) ? IMM(src2) : S2(src2))
39
emit_single_op(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 flags,sljit_s32 dst,sljit_s32 src1,sljit_sw src2)40 static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags,
41 sljit_s32 dst, sljit_s32 src1, sljit_sw src2)
42 {
43 SLJIT_COMPILE_ASSERT(ICC_IS_SET == SET_FLAGS, icc_is_set_and_set_flags_must_be_the_same);
44
45 switch (op) {
46 case SLJIT_MOV:
47 case SLJIT_MOV_U32:
48 case SLJIT_MOV_S32:
49 case SLJIT_MOV_P:
50 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
51 if (dst != src2)
52 return push_inst(compiler, OR | D(dst) | S1(0) | S2(src2), DR(dst));
53 return SLJIT_SUCCESS;
54
55 case SLJIT_MOV_U8:
56 case SLJIT_MOV_S8:
57 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
58 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
59 if (op == SLJIT_MOV_U8)
60 return push_inst(compiler, AND | D(dst) | S1(src2) | IMM(0xff), DR(dst));
61 FAIL_IF(push_inst(compiler, SLL | D(dst) | S1(src2) | IMM(24), DR(dst)));
62 return push_inst(compiler, SRA | D(dst) | S1(dst) | IMM(24), DR(dst));
63 }
64 else if (dst != src2)
65 SLJIT_UNREACHABLE();
66 return SLJIT_SUCCESS;
67
68 case SLJIT_MOV_U16:
69 case SLJIT_MOV_S16:
70 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
71 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
72 FAIL_IF(push_inst(compiler, SLL | D(dst) | S1(src2) | IMM(16), DR(dst)));
73 return push_inst(compiler, (op == SLJIT_MOV_S16 ? SRA : SRL) | D(dst) | S1(dst) | IMM(16), DR(dst));
74 }
75 else if (dst != src2)
76 SLJIT_UNREACHABLE();
77 return SLJIT_SUCCESS;
78
79 case SLJIT_NOT:
80 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
81 return push_inst(compiler, XNOR | (flags & SET_FLAGS) | D(dst) | S1(0) | S2(src2), DR(dst) | (flags & SET_FLAGS));
82
83 case SLJIT_CLZ:
84 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
85 /* sparc 32 does not support SLJIT_KEEP_FLAGS. Not sure I can fix this. */
86 FAIL_IF(push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(src2) | S2(0), SET_FLAGS));
87 FAIL_IF(push_inst(compiler, OR | D(TMP_REG1) | S1(0) | S2(src2), DR(TMP_REG1)));
88 FAIL_IF(push_inst(compiler, BICC | DA(0x1) | (7 & DISP_MASK), UNMOVABLE_INS));
89 FAIL_IF(push_inst(compiler, OR | (flags & SET_FLAGS) | D(dst) | S1(0) | IMM(32), UNMOVABLE_INS | (flags & SET_FLAGS)));
90 FAIL_IF(push_inst(compiler, OR | D(dst) | S1(0) | IMM(-1), DR(dst)));
91
92 /* Loop. */
93 FAIL_IF(push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(TMP_REG1) | S2(0), SET_FLAGS));
94 FAIL_IF(push_inst(compiler, SLL | D(TMP_REG1) | S1(TMP_REG1) | IMM(1), DR(TMP_REG1)));
95 FAIL_IF(push_inst(compiler, BICC | DA(0xe) | (-2 & DISP_MASK), UNMOVABLE_INS));
96 return push_inst(compiler, ADD | (flags & SET_FLAGS) | D(dst) | S1(dst) | IMM(1), UNMOVABLE_INS | (flags & SET_FLAGS));
97
98 case SLJIT_ADD:
99 return push_inst(compiler, ADD | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
100
101 case SLJIT_ADDC:
102 return push_inst(compiler, ADDC | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
103
104 case SLJIT_SUB:
105 return push_inst(compiler, SUB | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
106
107 case SLJIT_SUBC:
108 return push_inst(compiler, SUBC | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
109
110 case SLJIT_MUL:
111 FAIL_IF(push_inst(compiler, SMUL | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
112 if (!(flags & SET_FLAGS))
113 return SLJIT_SUCCESS;
114 FAIL_IF(push_inst(compiler, SRA | D(TMP_REG1) | S1(dst) | IMM(31), DR(TMP_REG1)));
115 FAIL_IF(push_inst(compiler, RDY | D(TMP_LINK), DR(TMP_LINK)));
116 return push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(TMP_REG1) | S2(TMP_LINK), MOVABLE_INS | SET_FLAGS);
117
118 case SLJIT_AND:
119 return push_inst(compiler, AND | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
120
121 case SLJIT_OR:
122 return push_inst(compiler, OR | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
123
124 case SLJIT_XOR:
125 return push_inst(compiler, XOR | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
126
127 case SLJIT_SHL:
128 FAIL_IF(push_inst(compiler, SLL | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
129 return !(flags & SET_FLAGS) ? SLJIT_SUCCESS : push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(dst) | S2(0), SET_FLAGS);
130
131 case SLJIT_LSHR:
132 FAIL_IF(push_inst(compiler, SRL | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
133 return !(flags & SET_FLAGS) ? SLJIT_SUCCESS : push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(dst) | S2(0), SET_FLAGS);
134
135 case SLJIT_ASHR:
136 FAIL_IF(push_inst(compiler, SRA | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
137 return !(flags & SET_FLAGS) ? SLJIT_SUCCESS : push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(dst) | S2(0), SET_FLAGS);
138 }
139
140 SLJIT_UNREACHABLE();
141 return SLJIT_SUCCESS;
142 }
143
emit_const(struct sljit_compiler * compiler,sljit_s32 dst,sljit_sw init_value)144 static SLJIT_INLINE sljit_s32 emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw init_value)
145 {
146 FAIL_IF(push_inst(compiler, SETHI | D(dst) | ((init_value >> 10) & 0x3fffff), DR(dst)));
147 return push_inst(compiler, OR | D(dst) | S1(dst) | IMM_ARG | (init_value & 0x3ff), DR(dst));
148 }
149
sljit_set_jump_addr(sljit_uw addr,sljit_uw new_target,sljit_sw executable_offset)150 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset)
151 {
152 sljit_ins *inst = (sljit_ins *)addr;
153
154 inst[0] = (inst[0] & 0xffc00000) | ((new_target >> 10) & 0x3fffff);
155 inst[1] = (inst[1] & 0xfffffc00) | (new_target & 0x3ff);
156 inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
157 SLJIT_CACHE_FLUSH(inst, inst + 2);
158 }
159
sljit_set_const(sljit_uw addr,sljit_sw new_constant,sljit_sw executable_offset)160 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset)
161 {
162 sljit_ins *inst = (sljit_ins *)addr;
163
164 inst[0] = (inst[0] & 0xffc00000) | ((new_constant >> 10) & 0x3fffff);
165 inst[1] = (inst[1] & 0xfffffc00) | (new_constant & 0x3ff);
166 inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
167 SLJIT_CACHE_FLUSH(inst, inst + 2);
168 }
169