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Fix repeater code types in code engine

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This commit is contained in:
Jay Oster 2022-06-11 21:50:22 -07:00
parent 349869ab95
commit 83b3651044
1 changed files with 16 additions and 2 deletions
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18
src/utils.c
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@ -751,12 +751,14 @@ patcher_start:
// Run code engine
"lui $k0, 0x8000;"
"lw $k0, 0x0188($k0);"
"addiu $k0, $k0, -0x28;"
"addiu $k0, $k0, -0x38;"
"sd $v1, 0x0000($k0);"
"sd $v0, 0x0008($k0);"
"sd $t9, 0x0010($k0);"
"sd $t8, 0x0018($k0);"
"sd $t7, 0x0020($k0);"
"sd $t6, 0x0028($k0);"
"sd $t5, 0x0030($k0);"
// Handle cheats
"lui $t9, 0x8000;"
@ -789,8 +791,18 @@ patcher_start:
"lw $k1, 0x0004($t9);" // Load value
"addiu $t9, $t9, 0x0008;"
"lui $t6, 0x0100;"
"and $t6, $v0, $t6;" // Test for 8-bit or 16-bit code type
"li $t5, 0xA07FFFFF;"
"and $v0, $v0, $t5;"
"lui $t5, 0x8000;"
"or $v0, $v0, $t5;" // Mask address
"2:"
"sh $k1, 0x0000($v0);" // Repeater/Patch write
"beqzl $t6, 5f;"
"sb $k1, 0x0000($v0);" // Repeated 8-bit write
"sh $k1, 0x0000($v0);" // Repeated 16-bit write
"5:"
"addiu $t8, $t8, -1;"
"addu $v0, $v0, $t7;"
"bnez $t8, 2b;"
@ -832,6 +844,8 @@ patcher_start:
"4:"
// Restore registers from our temporary stack, and back to the game!
"ld $t5, 0x0030($k0);"
"ld $t6, 0x0028($k0);"
"ld $t7, 0x0020($k0);"
"ld $t8, 0x0018($k0);"
"ld $t9, 0x0010($k0);"