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riscv64-asm.c: implement M extension

This commit is contained in:
noneofyourbusiness 2023-12-08 22:48:43 +01:00
parent c71415b543
commit 275dfbea20
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1 changed files with 55 additions and 0 deletions
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55
riscv64-asm.c
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@ -635,6 +635,47 @@ static void asm_ternary_opcode(TCCState *s1, int token)
asm_emit_s(token, (0x8 << 2) | 3 | (3 << 12), &ops[0], &ops[1], &ops[2]);
return;
/* M extension */
case TOK_ASM_div:
asm_emit_r(token, 0x33 | (4 << 12) | (1 << 25), ops, ops + 1, ops + 2);
return;
case TOK_ASM_divu:
asm_emit_r(token, 0x33 | (5 << 12) | (1 << 25), ops, ops + 1, ops + 2);
return;
case TOK_ASM_divuw:
asm_emit_r(token, 0x3b | (5 << 12) | (1 << 25), ops, ops + 1, ops + 2);
return;
case TOK_ASM_divw:
asm_emit_r(token, 0x3b | (4 << 12) | (1 << 25), ops, ops + 1, ops + 2);
return;
case TOK_ASM_mul:
asm_emit_r(token, 0x33 | (1 << 25), ops, ops + 1, ops + 2);
return;
case TOK_ASM_mulh:
asm_emit_r(token, 0x33 | (1 << 12) | (1 << 25), ops, ops + 1, ops + 2);
return;
case TOK_ASM_mulhsu:
asm_emit_r(token, 0x33 | (2 << 12) | (1 << 25), ops, ops + 1, ops + 2);
return;
case TOK_ASM_mulhu:
asm_emit_r(token, 0x33 | (3 << 12) | (1 << 25), ops, ops + 1, ops + 2);
return;
case TOK_ASM_mulw:
asm_emit_r(token, 0x3b | (1 << 25), ops, ops + 1, ops + 2);
return;
case TOK_ASM_rem:
asm_emit_r(token, 0x33 | (6 << 12) | (1 << 25), ops, ops + 1, ops + 2);
return;
case TOK_ASM_remu:
asm_emit_r(token, 0x33 | (7 << 12) | (1 << 25), ops, ops + 1, ops + 2);
return;
case TOK_ASM_remuw:
asm_emit_r(token, 0x3b | (7 << 12) | (1 << 25), ops, ops + 1, ops + 2);
return;
case TOK_ASM_remw:
asm_emit_r(token, 0x3b | (6 << 12) | (1 << 25), ops, ops + 1, ops + 2);
return;
/* C extension */
/* register-based loads and stores (RD, RS1, IMM); CL-format */
case TOK_ASM_c_fld:
@ -803,6 +844,20 @@ ST_FUNC void asm_opcode(TCCState *s1, int token)
case TOK_ASM_sw:
case TOK_ASM_xor:
case TOK_ASM_xori:
/* M extension */
case TOK_ASM_div:
case TOK_ASM_divu:
case TOK_ASM_divuw:
case TOK_ASM_divw:
case TOK_ASM_mul:
case TOK_ASM_mulh:
case TOK_ASM_mulhsu:
case TOK_ASM_mulhu:
case TOK_ASM_mulw:
case TOK_ASM_rem:
case TOK_ASM_remu:
case TOK_ASM_remuw:
case TOK_ASM_remw:
asm_ternary_opcode(s1, token);
return;