pcre2: Update to upstream version 10.42

Changelog: https://github.com/PCRE2Project/pcre2/blob/pcre2-10.42/ChangeLog

This should also fix support for RISC-V architectures, at least in the sljit
library.

1 files changed, 74 insertions, 18 deletions

diff --git a/thirdparty/pcre2/src/sljit/sljitNativePPC_32.c b/thirdparty/pcre2/src/sljit/sljitNativePPC_32.c
index 95fe6bbe0e..9449e4b9d7 100644
--- a/thirdparty/pcre2/src/sljit/sljitNativePPC_32.c
+++ b/thirdparty/pcre2/src/sljit/sljitNativePPC_32.c
@@ -38,12 +38,15 @@ static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 reg,
 	return (imm & 0xffff) ? push_inst(compiler, ORI | S(reg) | A(reg) | IMM(imm)) : SLJIT_SUCCESS;
 }
 
+/* Simplified mnemonics: clrlwi. */
 #define INS_CLEAR_LEFT(dst, src, from) \
-	(RLWINM | S(src) | A(dst) | ((from) << 6) | (31 << 1))
+	(RLWINM | S(src) | A(dst) | RLWI_MBE(from, 31))
 
 static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags,
 	sljit_s32 dst, sljit_s32 src1, sljit_s32 src2)
 {
+	sljit_u32 imm;
+
 	switch (op) {
 	case SLJIT_MOV:
 	case SLJIT_MOV_U32:
@@ -90,6 +93,16 @@ static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sl
 		SLJIT_ASSERT(src1 == TMP_REG1);
 		return push_inst(compiler, CNTLZW | S(src2) | A(dst));
 
+	case SLJIT_CTZ:
+		SLJIT_ASSERT(src1 == TMP_REG1);
+		FAIL_IF(push_inst(compiler, NEG | D(TMP_REG1) | A(src2)));
+		FAIL_IF(push_inst(compiler, AND | S(src2) | A(dst) | B(TMP_REG1)));
+		FAIL_IF(push_inst(compiler, CNTLZW | S(dst) | A(dst)));
+		FAIL_IF(push_inst(compiler, ADDI | D(TMP_REG1) | A(dst) | IMM(-32)));
+		/* The highest bits are set, if dst < 32, zero otherwise. */
+		FAIL_IF(push_inst(compiler, SRWI(27) | S(TMP_REG1) | A(TMP_REG1)));
+		return push_inst(compiler, XOR | S(dst) | A(dst) | B(TMP_REG1));
+
 	case SLJIT_ADD:
 		if (flags & ALT_FORM1) {
 			/* Setting XER SO is not enough, CR SO is also needed. */
@@ -103,12 +116,14 @@ static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sl
 			if (flags & ALT_FORM3)
 				return push_inst(compiler, ADDIS | D(dst) | A(src1) | compiler->imm);
 
+			imm = compiler->imm;
+
 			if (flags & ALT_FORM4) {
-				FAIL_IF(push_inst(compiler, ADDIS | D(dst) | A(src1) | (((compiler->imm >> 16) & 0xffff) + ((compiler->imm >> 15) & 0x1))));
+				FAIL_IF(push_inst(compiler, ADDIS | D(dst) | A(src1) | (((imm >> 16) & 0xffff) + ((imm >> 15) & 0x1))));
 				src1 = dst;
 			}
 
-			return push_inst(compiler, ADDI | D(dst) | A(src1) | (compiler->imm & 0xffff));
+			return push_inst(compiler, ADDI | D(dst) | A(src1) | (imm & 0xffff));
 		}
 		if (flags & ALT_FORM3) {
 			SLJIT_ASSERT(src2 == TMP_REG2);
@@ -208,8 +223,10 @@ static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sl
 		}
 		if (flags & ALT_FORM3) {
 			SLJIT_ASSERT(src2 == TMP_REG2);
-			FAIL_IF(push_inst(compiler, ORI | S(src1) | A(dst) | IMM(compiler->imm)));
-			return push_inst(compiler, ORIS | S(dst) | A(dst) | IMM(compiler->imm >> 16));
+			imm = compiler->imm;
+
+			FAIL_IF(push_inst(compiler, ORI | S(src1) | A(dst) | IMM(imm)));
+			return push_inst(compiler, ORIS | S(dst) | A(dst) | IMM(imm >> 16));
 		}
 		return push_inst(compiler, OR | RC(flags) | S(src1) | A(dst) | B(src2));
 
@@ -224,34 +241,78 @@ static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sl
 		}
 		if (flags & ALT_FORM3) {
 			SLJIT_ASSERT(src2 == TMP_REG2);
-			FAIL_IF(push_inst(compiler, XORI | S(src1) | A(dst) | IMM(compiler->imm)));
-			return push_inst(compiler, XORIS | S(dst) | A(dst) | IMM(compiler->imm >> 16));
+			imm = compiler->imm;
+
+			FAIL_IF(push_inst(compiler, XORI | S(src1) | A(dst) | IMM(imm)));
+			return push_inst(compiler, XORIS | S(dst) | A(dst) | IMM(imm >> 16));
 		}
 		return push_inst(compiler, XOR | RC(flags) | S(src1) | A(dst) | B(src2));
 
 	case SLJIT_SHL:
+	case SLJIT_MSHL:
 		if (flags & ALT_FORM1) {
 			SLJIT_ASSERT(src2 == TMP_REG2);
-			compiler->imm &= 0x1f;
-			return push_inst(compiler, RLWINM | RC(flags) | S(src1) | A(dst) | (compiler->imm << 11) | ((31 - compiler->imm) << 1));
+			imm = compiler->imm & 0x1f;
+			return push_inst(compiler, SLWI(imm) | RC(flags) | S(src1) | A(dst));
+		}
+
+		if (op == SLJIT_MSHL) {
+			FAIL_IF(push_inst(compiler, ANDI | S(src2) | A(TMP_REG2) | 0x1f));
+			src2 = TMP_REG2;
 		}
+
 		return push_inst(compiler, SLW | RC(flags) | S(src1) | A(dst) | B(src2));
 
 	case SLJIT_LSHR:
+	case SLJIT_MLSHR:
 		if (flags & ALT_FORM1) {
 			SLJIT_ASSERT(src2 == TMP_REG2);
-			compiler->imm &= 0x1f;
-			return push_inst(compiler, RLWINM | RC(flags) | S(src1) | A(dst) | (((32 - compiler->imm) & 0x1f) << 11) | (compiler->imm << 6) | (31 << 1));
+			imm = compiler->imm & 0x1f;
+			/* Since imm can be 0, SRWI() cannot be used. */
+			return push_inst(compiler, RLWINM | RC(flags) | S(src1) | A(dst) | RLWI_SH((32 - imm) & 0x1f) | RLWI_MBE(imm, 31));
+		}
+
+		if (op == SLJIT_MLSHR) {
+			FAIL_IF(push_inst(compiler, ANDI | S(src2) | A(TMP_REG2) | 0x1f));
+			src2 = TMP_REG2;
 		}
+
 		return push_inst(compiler, SRW | RC(flags) | S(src1) | A(dst) | B(src2));
 
 	case SLJIT_ASHR:
+	case SLJIT_MASHR:
 		if (flags & ALT_FORM1) {
 			SLJIT_ASSERT(src2 == TMP_REG2);
-			compiler->imm &= 0x1f;
-			return push_inst(compiler, SRAWI | RC(flags) | S(src1) | A(dst) | (compiler->imm << 11));
+			imm = compiler->imm & 0x1f;
+			return push_inst(compiler, SRAWI | RC(flags) | S(src1) | A(dst) | (imm << 11));
+		}
+
+		if (op == SLJIT_MASHR) {
+			FAIL_IF(push_inst(compiler, ANDI | S(src2) | A(TMP_REG2) | 0x1f));
+			src2 = TMP_REG2;
 		}
+
 		return push_inst(compiler, SRAW | RC(flags) | S(src1) | A(dst) | B(src2));
+
+	case SLJIT_ROTL:
+	case SLJIT_ROTR:
+		if (flags & ALT_FORM1) {
+			SLJIT_ASSERT(src2 == TMP_REG2);
+			imm = compiler->imm;
+
+			if (op == SLJIT_ROTR)
+				imm = (sljit_u32)(-(sljit_s32)imm);
+
+			imm &= 0x1f;
+			return push_inst(compiler, RLWINM | S(src1) | A(dst) | RLWI_SH(imm) | RLWI_MBE(0, 31));
+		}
+
+		if (op == SLJIT_ROTR) {
+			FAIL_IF(push_inst(compiler, SUBFIC | D(TMP_REG2) | A(src2) | 0));
+			src2 = TMP_REG2;
+		}
+
+		return push_inst(compiler, RLWNM | S(src1) | A(dst) | B(src2) | RLWI_MBE(0, 31));
 	}
 
 	SLJIT_UNREACHABLE();
@@ -277,8 +338,3 @@ SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_ta
 	inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
 	SLJIT_CACHE_FLUSH(inst, inst + 2);
 }
-
-SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset)
-{
-	sljit_set_jump_addr(addr, (sljit_uw)new_constant, executable_offset);
-}