ed/pikuma_ps1
1
0
Fork 0
mirror of https://github.com/Ed94/pikuma_ps1.git synced 2026-08-06 15:48:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

Reviewing post-dsl refactors, more pseudo instructions

Browse Source
This commit is contained in:
ed
2026-07-08 17:14:11 -04:00
parent 5e7da32387
commit 74f390c3b1
4 changed files with 41 additions and 45 deletions
Download Patch File Download Diff File Expand all files Collapse all files
code/duffle/mips.h
+5
View File
@@ -355,6 +355,7 @@ enum { _BitOffsets = 0
#define load_u4 load_word
// Ergonomic add to the same register.
#define or_i_self(rt_rs, imm) enc_i(op_ori, (rt_rs), (rt_rs), (imm))
#define add_ui_self(rt_rs, imm) enc_i(op_addiu, (rt_rs), (rt_rs), (imm))
/* Logic Opcodes */
@@ -364,11 +365,15 @@ enum { _BitOffsets = 0
#define xor_u(rd, rs, rt) enc_r(op_special, (rs), (rt), (rd), 0, fc_xor)
#define nor_u(rd, rs, rt) enc_r(op_special, (rs), (rt), (rd), 0, fc_nor)
#define or_u_self(rd_rs, rt) enc_r(op_special, (rd_rs), (rt), (rd_rs), 0, fc_or)
/* Shift family (R-type). shift_lleft/lright/aright: `sll/srl/sra rd, rt, shamt` */
#define shift_lleft(rd, rt, shamt) enc_r(op_special, R_0, (rt), (rd), (shamt), fc_sll)
#define shift_lright(rd, rt, shamt) enc_r(op_special, R_0, (rt), (rd), (shamt), fc_srl)
#define shift_aright(rd, rt, shamt) enc_r(op_special, R_0, (rt), (rd), (shamt), fc_sra)
#define shift_lleft_self(rd_rt, shamt) enc_r(op_special, R_0, (rd_rt), (rd_rt), (shamt), fc_sll)
#define mask_upper(rd, rt, shamt) shift_lleft(rd, rt, shamt), shift_lright(rd, rt, shamt)
/* jr rs — jump to address in rs. */