diff options
Diffstat (limited to 'thirdparty/pcre2/src/sljit/sljitNativeRISCV_32.c')
| -rw-r--r-- | thirdparty/pcre2/src/sljit/sljitNativeRISCV_32.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/thirdparty/pcre2/src/sljit/sljitNativeRISCV_32.c b/thirdparty/pcre2/src/sljit/sljitNativeRISCV_32.c new file mode 100644 index 0000000000..b38e6924c8 --- /dev/null +++ b/thirdparty/pcre2/src/sljit/sljitNativeRISCV_32.c @@ -0,0 +1,73 @@ +/* + * Stack-less Just-In-Time compiler + * + * Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, are + * permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this list of + * conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, this list + * of conditions and the following disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 dst_r, sljit_sw imm, sljit_s32 tmp_r) +{ + SLJIT_UNUSED_ARG(tmp_r); + SLJIT_ASSERT(dst_r != tmp_r); + + if (imm <= SIMM_MAX && imm >= SIMM_MIN) + return push_inst(compiler, ADDI | RD(dst_r) | RS1(TMP_ZERO) | IMM_I(imm)); + + if (imm & 0x800) + imm += 0x1000; + + FAIL_IF(push_inst(compiler, LUI | RD(dst_r) | (sljit_ins)(imm & ~0xfff))); + + if ((imm & 0xfff) == 0) + return SLJIT_SUCCESS; + + return push_inst(compiler, ADDI | RD(dst_r) | RS1(dst_r) | IMM_I(imm)); +} + +static SLJIT_INLINE sljit_s32 emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw init_value, sljit_ins last_ins) +{ + if ((init_value & 0x800) != 0) + init_value += 0x1000; + + FAIL_IF(push_inst(compiler, LUI | RD(dst) | (sljit_ins)(init_value & ~0xfff))); + return push_inst(compiler, last_ins | RS1(dst) | IMM_I(init_value)); +} + +SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset) +{ + sljit_ins *inst = (sljit_ins*)addr; + SLJIT_UNUSED_ARG(executable_offset); + + if ((new_target & 0x800) != 0) + new_target += 0x1000; + + SLJIT_UPDATE_WX_FLAGS(inst, inst + 5, 0); + + SLJIT_ASSERT((inst[0] & 0x7f) == LUI); + inst[0] = (inst[0] & 0xfff) | (sljit_ins)((sljit_sw)new_target & ~0xfff); + SLJIT_ASSERT((inst[1] & 0x707f) == ADDI || (inst[1] & 0x707f) == JALR); + inst[1] = (inst[1] & 0xfffff) | IMM_I(new_target); + + SLJIT_UPDATE_WX_FLAGS(inst, inst + 5, 1); + inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); + SLJIT_CACHE_FLUSH(inst, inst + 5); +} |