User Tools
Differences
This shows you the differences between two versions of the page.
| Next revision | Previous revision | ||
|
weird_asm_code [2015/12/03 15:25] queueram created |
— (current) | ||
|---|---|---|---|
| Line 1: | Line 1: | ||
| - | ====== Weird ASM Code ====== | ||
| - | Throughout the SM64 ROM there is a lot of weird assembly code. The purpose of this page is to document all the ASM weirdness. | ||
| - | ===== Kill it Again ===== | ||
| - | In case the first ANDI didn't work, the compiler inserts a second one: | ||
| - | |||
| - | <code asm>Behavior1F: # begin 80385114 (101E94) | ||
| - | addiu $sp, $sp, -0x10 | ||
| - | lw $t6, 0x80361164 # lui $t6, 0x8036/lw $t6, 0x1164($t6) | ||
| - | lw $t7, ($t6) | ||
| - | srl $t8, $t7, 0x10 | ||
| - | andi $t9, $t8, 0xff | ||
| - | andi $t0, $t9, 0xff | ||
| - | sw $t0, 0xc($sp) | ||
| - | lw $t1, 0x80361164 # lui $t1, 0x8036/lw $t1, 0x1164($t1) | ||
| - | lw $t2, ($t1) | ||
| - | srl $t3, $t2, 8 | ||
| - | andi $t4, $t3, 0xff | ||
| - | andi $t5, $t4, 0xff | ||
| - | sw $t5, 8($sp) | ||
| - | lw $t6, 0x80361164 # lui $t6, 0x8036/lw $t6, 0x1164($t6) | ||
| - | lw $t7, ($t6) | ||
| - | andi $t8, $t7, 0xff | ||
| - | andi $t9, $t8, 0xff | ||
| - | sw $t9, 4($sp)</code> | ||
