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asm code updated, Bass Masters fix

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@330 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-01-26 10:02:50 +00:00
parent 689fb2c089
commit 0ffefdb8bd
13 changed files with 91 additions and 47 deletions
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40
Pico/Memory_amips.s
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@ -435,16 +435,28 @@ m_read8_fake_ym2612:
sb $t1, %lo(Pico+0x22208)($t0)
# delay slot friendly
.macro m_read8_call16 funcname
.macro m_read8_call16 funcname is_func_ptr=0
.if \is_func_ptr
lui $t1, %hi(\funcname)
lw $t1, %lo(\funcname)($t1)
.endif
andi $t0, $a0, 1
beqz $t0, 1f
li $a1, 8 # not always needed, but shouln't cause problems
.if \is_func_ptr
jr $t1
.else
j \funcname # odd address
.endif
nop
1:
addiu $sp, -4
sw $ra, 0($sp)
.if \is_func_ptr
jalr $t1
.else
jal \funcname
.endif
xori $a0, 1
lw $ra, 0($sp)
addiu $sp, 4
@ -473,7 +485,7 @@ m_read8_ram:
m_read8_above_rom:
# might still be SRam (Micro Machines, HardBall '95)
m_read_rom_try_sram 0 8
m_read8_call16 OtherRead16End
m_read8_call16 PicoRead16Hook 1
# #############################################################################
@ -584,7 +596,9 @@ m_read16_ram:
m_read16_above_rom:
# might still be SRam
m_read_rom_try_sram 0 16
j OtherRead16End
lui $t1, %hi(PicoRead16Hook)
lw $t1, %lo(PicoRead16Hook)($t1)
jr $t1
ins $a0, $0, 0, 1
# #############################################################################
@ -725,7 +739,25 @@ m_read32_above_rom:
# might still be SRam
m_read_rom_try_sram 0 32
ins $a0, $0, 0, 1
m_read32_call16 OtherRead16End
lui $t1, %hi(PicoRead16Hook)
lw $t1, %lo(PicoRead16Hook)($t1)
addiu $sp, -4*3
sw $ra, 0($sp)
sw $s0, 4($sp)
sw $t1, 8($sp)
jalr $t1
move $s0, $a0
lw $t1, 8($sp)
addu $a0, $s0, 2
jalr $t1
move $s0, $v0
ins $v0, $s0, 16, 16
lw $ra, 0($sp)
lw $s0, 4($sp)
jr $ra
addiu $sp, 4*3
# #############################################################################