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[Tinycc-devel] [PATCH 10/16] arm-asm: Add clz, sxtb, sxth, uxtb, uxth
From: |
Danny Milosavljevic |
Subject: |
[Tinycc-devel] [PATCH 10/16] arm-asm: Add clz, sxtb, sxth, uxtb, uxth |
Date: |
Sat, 26 Dec 2020 22:58:11 +0100 |
---
arm-asm.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
arm-tok.h | 10 ++++++++++
2 files changed, 57 insertions(+)
diff --git a/arm-asm.c b/arm-asm.c
index b6dfafe..c2598a8 100644
--- a/arm-asm.c
+++ b/arm-asm.c
@@ -190,6 +190,47 @@ static void asm_unary_opcode(TCCState *s1, int token)
}
}
+static void asm_binary_opcode(TCCState *s1, int token)
+{
+ Operand ops[2];
+ parse_operand(s1, &ops[0]);
+ if (tok == ',')
+ next();
+ else
+ expect("','");
+ parse_operand(s1, &ops[1]);
+ if (ops[0].type != OP_REG32) {
+ expect("(destination operand) register");
+ return;
+ }
+
+ if (ops[1].type != OP_REG32)
+ expect("(source operand) register");
+ else switch (ARM_INSTRUCTION_GROUP(token)) {
+ case TOK_ASM_clzeq:
+ asm_emit_opcode(token, 0x16f0f10 | (ops[0].reg << 12) | ops[1].reg);
+ break;
+ case TOK_ASM_sxtbeq:
+ /* TODO: optional ROR (8|16|24) */
+ asm_emit_opcode(token, 0x6af0070 | (ops[0].reg << 12) | ops[1].reg);
+ break;
+ case TOK_ASM_sxtheq:
+ /* TODO: optional ROR (8|16|24) */
+ asm_emit_opcode(token, 0x6bf0070 | (ops[0].reg << 12) | ops[1].reg);
+ break;
+ case TOK_ASM_uxtbeq:
+ /* TODO: optional ROR (8|16|24) */
+ asm_emit_opcode(token, 0x6ef0070 | (ops[0].reg << 12) | ops[1].reg);
+ break;
+ case TOK_ASM_uxtheq:
+ /* TODO: optional ROR (8|16|24) */
+ asm_emit_opcode(token, 0x6ff0070 | (ops[0].reg << 12) | ops[1].reg);
+ break;
+ default:
+ expect("binary instruction");
+ }
+}
+
static void asm_block_data_transfer_opcode(TCCState *s1, int token)
{
uint32_t opcode;
@@ -268,6 +309,12 @@ ST_FUNC void asm_opcode(TCCState *s1, int token)
return asm_nullary_opcode(token);
case TOK_ASM_swieq:
return asm_unary_opcode(s1, token);
+ case TOK_ASM_clzeq:
+ case TOK_ASM_sxtbeq:
+ case TOK_ASM_sxtheq:
+ case TOK_ASM_uxtbeq:
+ case TOK_ASM_uxtheq:
+ return asm_binary_opcode(s1, token);
default:
expect("known instruction");
}
diff --git a/arm-tok.h b/arm-tok.h
index db1935f..06cee7a 100644
--- a/arm-tok.h
+++ b/arm-tok.h
@@ -56,6 +56,16 @@
DEF_ASM_CONDED(wfi)
DEF_ASM_CONDED(swi)
+ /* misc */
+ DEF_ASM_CONDED(clz)
+
+ /* size conversion */
+
+ DEF_ASM_CONDED(sxtb)
+ DEF_ASM_CONDED(sxth)
+ DEF_ASM_CONDED(uxtb)
+ DEF_ASM_CONDED(uxth)
+
/* instruction macros */
DEF_ASM_CONDED(push)
- [Tinycc-devel] [PATCH 00/16] Add ARM inline assembler, Danny Milosavljevic, 2020/12/26
- [Tinycc-devel] [PATCH 03/16] arm-asm: Update copyright header, Danny Milosavljevic, 2020/12/26
- [Tinycc-devel] [PATCH 06/16] arm-asm: Add wfe, wfi, Danny Milosavljevic, 2020/12/26
- [Tinycc-devel] [PATCH 05/16] arm-asm: Add nop, Danny Milosavljevic, 2020/12/26
- [Tinycc-devel] [PATCH 08/16] arm-asm: Add push, pop, Danny Milosavljevic, 2020/12/26
- [Tinycc-devel] [PATCH 01/16] arm-asm: Publish g, gen_le16, gen_le32 in tcc.h, Danny Milosavljevic, 2020/12/26
- [Tinycc-devel] [PATCH 09/16] arm-asm: Add swi, Danny Milosavljevic, 2020/12/26
- [Tinycc-devel] [PATCH 07/16] arm-asm: Add parse_operand, Operand, Danny Milosavljevic, 2020/12/26
- [Tinycc-devel] [PATCH 10/16] arm-asm: Add clz, sxtb, sxth, uxtb, uxth,
Danny Milosavljevic <=
- [Tinycc-devel] [PATCH 12/16] arm-asm: Add stmda, ldmda, stm, ldm, stmia, ldmia, stmdb, ldmdb, stmib, ldmib, Danny Milosavljevic, 2020/12/26
- [Tinycc-devel] [PATCH 11/16] arm-asm: Add mul, mla, smull, umull, smlal, umlal, Danny Milosavljevic, 2020/12/26
- [Tinycc-devel] [PATCH 13/16] arm-asm: Add ldr, ldrb, str, strb, Danny Milosavljevic, 2020/12/26
- [Tinycc-devel] [PATCH 16/16] arm-asm: Optimize gen_le32, Danny Milosavljevic, 2020/12/26
- [Tinycc-devel] [PATCH 15/16] arm-asm: Add b, bl, bx, blx, Danny Milosavljevic, 2020/12/26
- [Tinycc-devel] [PATCH 14/16] arm-asm: Add and, eor, sub, rsb, add, adc, sbc, rsc, tst, teq, cmp, cmn, orr, mov, bic, mvn, Danny Milosavljevic, 2020/12/26
- Re: [Tinycc-devel] [PATCH 00/16] Add ARM inline assembler, Danny Milosavljevic, 2020/12/26
- [Tinycc-devel] [PATCH 02/16] arm-asm: Implement asm_parse_regvar and asm_clobber, Danny Milosavljevic, 2020/12/26
- [Tinycc-devel] [PATCH 04/16] arm-asm: Remove asm_error, Danny Milosavljevic, 2020/12/26
- Re: [Tinycc-devel] [PATCH 00/16] Add ARM inline assembler, Jan Nieuwenhuizen, 2020/12/27
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