Imported pristine psxsdk-20190410 from official repo

1 files changed, 344 insertions, 0 deletions

diff --git a/libpsx/src/syscalls.s b/libpsx/src/syscalls.s
new file mode 100644
index 0000000..305d03e
--- /dev/null
+++ b/libpsx/src/syscalls.s
@@ -0,0 +1,344 @@
+# PSX SDK System calls file
+
+.text
+
+# Console functions
+
+.global bios_putchar
+.global bios_puts
+.global printf
+.extern __stdio_direction
+.extern sio_printf
+
+bios_putchar:
+	li $9, 0x3c
+	j 0xa0
+	nop
+	
+bios_puts:
+	li $9, 0x3e
+	j 0xa0
+	nop
+	
+printf:
+	la $9, __stdio_direction
+	lw $10, 0($9)
+	beq $10, $0, use_bios_printf
+	nop
+	j sio_printf
+	nop
+use_bios_printf:
+	li $9, 0x3f
+	j 0xa0
+	nop
+
+# Memory functions
+# These are not used by PSXSDK, and are here just for completeness.
+
+.global InitHeap
+.global FlushCache
+
+InitHeap:
+	li $9, 0x39
+	j 0xa0
+	nop
+	
+FlushCache:
+	li $9, 0x44
+	j 0xa0
+	nop
+
+# GPU functions
+.global GPU_dw
+.global mem2vram
+.global SendGPU
+.global GPU_cw
+.global GPU_cwb
+.global SendPrimitive
+.global GetGPUStatus
+
+GPU_dw:
+	li $9, 0x46
+	j 0xa0
+	nop
+
+mem2vram:
+	li $9, 0x47
+	j 0xa0
+	nop
+
+.global ResetEntryInt
+
+ResetEntryInt:
+	li $9, 0x18
+	j 0xb0
+	nop
+
+# ???
+.global GetKernelDate
+.global GetKernelRomVersion
+.global GetRamSize
+
+GetKernelDate:
+	li $9, 0xb4
+	li $4, 0
+	j 0xa0
+	nop
+
+GetKernelRomVersion:
+	li $9, 0xb4
+	li $4, 2
+	j 0xa0
+	nop
+
+GetRamSize:
+	li $9, 0xb4
+	li $4, 5
+	j 0xa0
+	nop
+
+# Event functions
+.global OpenEvent
+.global EnableEvent
+.global CloseEvent
+.global DisableEvent
+.global WaitEvent
+.global TestEvent
+.global DeliverEvent
+
+OpenEvent:
+	li $9, 0x08
+	j 0xb0
+	nop
+
+EnableEvent:
+	li $9, 0x0c
+	j 0xb0
+	nop
+
+CloseEvent:
+	li $9, 0x09
+	j 0xb0
+	nop
+	
+DisableEvent:
+	li $9, 0x0d
+	j 0xb0
+	nop
+
+DeliverEvent:
+	li $9, 0x07
+	j 0xb0
+	nop
+	
+WaitEvent:
+	li $9, 0x0a
+	j 0xb0
+	nop
+	
+TestEvent:
+	li $9, 0x0b
+	j 0xb0
+	nop
+
+# File I/O functions
+.global open
+.global lseek
+.global read
+.global write
+.global close
+.global cd
+.global firstfile
+.global nextfile
+.global rename
+.global remove
+
+open:
+	li $9, 0x32
+	j 0xb0
+	nop
+	
+lseek:
+	li $9, 0x33
+	j 0xb0
+	nop
+	
+read:
+	li $9, 0x34
+	j 0xb0
+	nop
+	
+write:
+	li $9, 0x35
+	j 0xb0
+	nop
+	
+close:
+	li $9, 0x36
+	j 0xb0
+	nop
+	
+cd:
+	li $9, 0x40
+	j 0xb0
+	nop
+	
+firstfile:
+	li $9, 0x42
+	j 0xb0
+	nop
+	
+nextfile:
+	li $9, 0x43
+	j 0xb0
+	nop
+
+rename:
+	li $9, 0x44
+	j 0xb0
+	nop
+	
+remove:
+	li $9, 0x45
+	j 0xb0
+	nop
+	
+# Exception / Interrupt functions
+
+.global EnterCriticalSection
+.global ExitCriticalSection
+.global SysEnqIntRP
+.global SysDeqIntRP
+	
+EnterCriticalSection:
+	li $a0, 1
+	syscall
+	nop
+	jr $ra
+	nop
+
+ExitCriticalSection:
+	li $a0, 2
+	syscall
+	nop
+	jr $ra
+	nop
+
+SysEnqIntRP:
+	li $9, 0x02
+	j 0xc0
+	nop
+	
+SysDeqIntRP:
+	li $9, 0x03
+	j 0xc0
+	nop
+	
+# Filesystem functions
+
+.global _96_init
+.global _96_remove
+.global _bu_init
+
+_96_init:
+	li $9, 0x71
+	j 0xa0
+	nop
+	
+_96_remove:
+	li $9, 0x72
+	j 0xa0
+	nop
+	
+_bu_init:
+	li $9, 0x70
+	j 0xa0
+	nop
+	
+# Executable loading functions
+
+.global LoadExec
+
+LoadExec:
+	li $9, 0x51
+	j 0xa0
+	nop
+
+# Memory card routines
+
+.global InitCARD
+.global StartCARD
+.global StopCARD
+.global _card_info
+.global _card_load
+.global _card_auto
+.global _card_write
+.global _card_read
+.global _card_status
+.global _new_card
+
+InitCARD:
+	li $9, 0x4a
+	j 0xb0
+	nop
+	
+StartCARD:
+	li $9, 0x4b
+	j 0xb0
+	nop
+
+StopCARD:
+	li $9, 0x4c
+	j 0xb0
+	nop
+
+_card_info:
+	li $9, 0xab
+	j 0xa0
+	nop
+	
+_card_load:
+	li $9, 0xac
+	j 0xa0
+	nop
+	
+_card_auto:
+	li $9, 0xad
+	j 0xa0
+	nop
+
+_card_write:
+	li $9, 0x4e
+	j 0xb0
+	nop
+	
+_card_read:
+	li $9, 0x4f
+	j 0xb0
+	nop
+
+_new_card:
+	li $9, 0x50
+	j 0xb0
+	nop
+	
+_card_status:
+	li $9, 0x5c
+	j 0xb0
+	nop
+
+# Device functions
+
+.global PrintInstalledDevices
+
+PrintInstalledDevices:
+	li $9, 0x49
+	j 0xb0
+	nop
+
+.global BIOSWarmReboot
+
+BIOSWarmReboot:
+	li $9, 0xa0
+	nop
+	j 0xa0