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New ps1/exe version from Jens.

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committer: mfx <mfx> 1083813373 +0000
This commit is contained in:
Markus F.X.J. Oberhumer
2004-05-06 03:16:13 +00:00
parent 23f5370dcf
commit 767e4e2ce6
9 changed files with 519 additions and 287 deletions
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src/stub/l_ps1.asm
+43 -34
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@@ -35,12 +35,6 @@
#define HI(a) (a >> 16)
#define LO(a) (a & 0xffff)
#if 1
# define NRV_BB 8
#else
# define NRV_BB 32
#endif
#define SZ_REG 4
#if CDBOOT
@@ -61,7 +55,7 @@ regs ENDM
#else //console
regs MACRO _w
regs MACRO _w, marker
_w at,SZ_REG*0(sp)
_w a0,SZ_REG*1(sp)
_w a1,SZ_REG*2(sp)
@@ -70,6 +64,10 @@ regs MACRO _w
_w v0,SZ_REG*5(sp)
_w v1,SZ_REG*6(sp)
_w ra,SZ_REG*7(sp)
IF (marker != 0)
DW marker
addu sp,at
ENDIF
regs ENDM
#define REG_SZ (8*SZ_REG)
@@ -77,7 +75,6 @@ regs ENDM
#endif //CDBOOT
ORG 0
start:
#if CDBOOT
@@ -93,7 +90,7 @@ start:
subiu sp,REG_SZ ; adjust stack
cutpoint:
; __PS1ENTRY__
regs sw, 0 ; push used regs
regs sw,0 ; push used regs
li a0,'CPDO' ; load COMPDATA offset
; li a1,'CDSZ' ; compressed data size - disabled!
; __PS1CONHL__
@@ -111,16 +108,16 @@ cutpoint:
; __PS1START__
addiu at,zero,'LS' ; size of decomp. routine
subu sp,at ; adjust the stack with this size
regs sw ; push used regs
subiu a2,at,REG_SZ ; a0 = counter copyloop
regs sw,0 ; push used regs
subiu a2,at,REG_SZ ; a2 = counter copyloop
addiu a3,sp,REG_SZ ; get offset for decomp. routine
move a1,a3
li a0,'DCRT' ; load decompression routine's offset
copyloop:
addi a2,-4
lw at,0(a0) ; memcpy *a2 -> at -> *a1
addiu a0,4
lw at,0(a0) ; memcpy *a0 -> at -> *a1
addiu a2,-4
sw at,0(a1)
addiu a0,4
bnez a2,copyloop
addiu a1,4
@@ -141,23 +138,45 @@ cutpoint:
; ============= DECOMPRESSION
; =============
#ifndef FAST
# define FAST
#endif
#if CDBOOT
# if SMALL
# ifdef SMALL
# undef SMALL
# endif
#else //CONSOLE
# if !SMALL
# define SMALL
# ifndef SMALL
# define SMALL
# endif
#endif //CDBOOT
; __PS1N2BD8__
#ifdef NRV_BB
# undef NRV_BB
#endif
#define NRV_BB 8
; __PS1N2B08__
#include <mr3k/n2b_d.ash>
; __PS1N2DD8__
; __PS1N2D08__
#include <mr3k/n2d_d.ash>
; __PS1N2ED8__
; __PS1N2E08__
#include <mr3k/n2e_d.ash>
#ifdef NRV_BB
# undef NRV_BB
#endif
#define NRV_BB 32
; __PS1N2B32__
#include <mr3k/n2b_d.ash>
; __PS1N2D32__
#include <mr3k/n2d_d.ash>
; __PS1N2E32__
#include <mr3k/n2e_d.ash>
; =============
; __PS1MSETB__
@@ -167,36 +186,26 @@ cutpoint:
ori a0,zero,'SC' ; amount of removed zero's at eof
; __PS1MSETA__
memset_aligned:
addi a0,-4
sw zero,0(a2)
addiu a0,-4
bnez a0,memset_aligned
addiu a2,4
; __PS1MSETU__
memset_unaligned:
addi a0,-4
swl zero,3(a2)
swr zero,0(a2)
addiu a0,-4
bnez a0,memset_unaligned
addiu a2,4
; =============
; __PS1FLUSH__
; __PS1EXITC__
li t2,160 ; flushes
jalr ra,t2 ; instruction
li t1,68 ; cache
; =============
; __PS1JMPEP__
#if CDBOOT
regs lw, 'JPEP' ; marker for the entry jump
#else //CONSOLE
regs lw ; pop used regs
DW 'JPEP' ; marker for the entry jump
addu sp,at
#endif //CDBOOT
; =============
; __PS1PAHDR__
@@ -222,6 +231,6 @@ memset_unaligned:
; __PS1EOASM__
eof:
; section .data
; section .data
DW -1
DH eof