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https://github.com/thug1src/thug.git
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276 lines
4.7 KiB
ArmAsm
276 lines
4.7 KiB
ArmAsm
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/* SCEI CONFIDENTIAL
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"PlayStation 2" Programmer Tool Runtime Library Release 2.4
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*/
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/*
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* Emotion Engine Library
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* Version 1.10
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* Shift-JIS
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*
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* Copyright (C) 1998-1999 Sony Computer Entertainment Inc.
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* All Rights Reserved.
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*
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* libkernel - crt0.s
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* kernel libraly
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*
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* Version Date Design Log
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* --------------------------------------------------------------------
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* 1.10 Oct.12.1999 horikawa renewal
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* 1.50 May.16.2000 horikawa
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*/
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/* Ken: Added so that I can use register names like a0 rather than $4 */
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#include "C:\usr\local\sce\iop\gcc\mipsel-scei-elfl\include\cpureg.h"
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#define DS_SOUND
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#ifdef __mips16
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.set nomips16 /* This file contains 32 bit assembly code. */
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#endif
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#define ARG_SIZ 256 + 16*4 + 1*4
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_stack = _std_stack
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.set noat
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.set noreorder
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.global ENTRYPOINT
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.global _start
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.ent _start
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.text # 0x00200000
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nop
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nop
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ENTRYPOINT:
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_start:
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#if defined(DS_SOUND)
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/* $4 = 第 1 引数（レジスタ渡し）*/
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lui $2, %hi(_args_ptr)
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addiu $2, $2, %lo(_args_ptr)
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sw $4, ($2)
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#endif
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/*
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* clear .bss
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*/
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zerobss:
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lui $2, %hi(_fbss)
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lui $3, %hi(_end)
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addiu $2, $2, %lo(_fbss)
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addiu $3, $3, %lo(_end)
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1:
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sq $0, ($2)
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nop
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sltu $1, $2, $3
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nop
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nop
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bne $1, $0, 1b
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addiu $2, $2, 16
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/*
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* initialize main thread
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*/
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lui $4, %hi(_gp)
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lui $5, %hi(_stack)
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lui $6, %hi(_stack_size)
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lui $7, %hi(_args)
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lui $8, %hi(_root)
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addiu $4, $4, %lo(_gp)
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addiu $5, $5, %lo(_stack)
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addiu $6, $6, %lo(_stack_size)
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addiu $7, $7, %lo(_args)
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addiu $8, $8, %lo(_root)
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move $28, $4
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addiu $3, $0, 60
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syscall
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move $29, $2
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/*
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* initialize heap area
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*/
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lui $4, %hi(_end)
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lui $5, %hi(_heap_size)
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addiu $4, $4, %lo(_end)
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addiu $5, $5, %lo(_heap_size)
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addiu $3, $0, 61
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syscall
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/*
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* Ken addition.
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* Detect whether we are running on a ProView system by seeing whether
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* snputs works.
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*/
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jal sceScfGetLanguage # snputs will always fail until this is called, for some reason.
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nop
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la a0,TestStringForSnputs
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jal snputs
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nop
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bltz v0,notproview # If the return value is -1, it is not a proview.
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nop
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/*
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* Now we know we're running on a ProView, so run the startup code copied from
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* the ProView crt0.s
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*/
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/*
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* flush data cache
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*/
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jal FlushCache
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move $4, $0
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/*
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* call main program
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*/
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ei
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/*
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* This is a Neversoft addition, we need to call pre_main to set up the mem manager & debug stuff
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*/
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jal pre_main
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nop
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#if defined(DS_SOUND)
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lui $2, %hi(_args_ptr)
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addiu $2, $2, %lo(_args_ptr)
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lw $3, ($2)
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beq $3, $0, _skipArgV
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nop
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addiu $2, $3, 4
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b _run
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nop
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_skipArgV:
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lui $2, %hi(_args)
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addiu $2, $2, %lo(_args)
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#else
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lui $2, %hi(_args)
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addiu $2, $2, %lo(_args)
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#endif
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_run:
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lw $4, ($2)
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jal main
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addiu $5, $2, 4
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/*
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* This is a Neversoft addition, we call post_main at the end
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*/
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jal post_main
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nop
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#if defined(DS_SOUND)
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j _root
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nop
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#else
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j Exit
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move $4, $2
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#endif
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notproview:
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/*
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* initialize System
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*/
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jal _InitSys
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nop
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/*
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* flush data cache
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*/
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jal FlushCache
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move $4, $0
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/*
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* call main program
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*/
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ei
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/*
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* This is a Neversoft addition, we need to call pre_main to set up the mem manager & debug stuff
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*/
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jal pre_main
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nop
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lui $2, %hi(_args)
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addiu $2, $2, %lo(_args)
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lw $4, ($2)
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jal main
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addiu $5, $2, 4
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/*
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* This is a Neversoft addition, we call post_main at the end
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*/
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jal post_main
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nop
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j Exit
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move $4, $2
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.end _start
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/**************************************/
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.align 3
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.global _exit
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.ent _exit
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_exit:
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#if defined(DS_SOUND)
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j _root
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nop
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#else
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j Exit # Exit(0);
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move $4, $0
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#endif
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.end _exit
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.align 3
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.ent _root
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_root:
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#if defined(DS_SOUND)
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/*
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* K: If not ProView, don't do the next bit, or it will crash.
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*/
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la a0,TestStringForSnputs
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jal snputs
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nop
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bltz v0,notproviewsogotoexitthread # If the return value is -1, it is not a proview.
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nop
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lui $2, %hi(_args_ptr)
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addiu $2, $2, %lo(_args_ptr)
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lw $3, ($2)
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jal SignalSema
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lw $4, ($3)
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notproviewsogotoexitthread:
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#endif
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addiu $3, $0, 35 # ExitThread();
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syscall
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.end _root
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.bss
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.align 6
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_args: .space ARG_SIZ
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#if defined(DS_SOUND)
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.data
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_args_ptr:
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.space 4
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#endif
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/*
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* Ken: This is used by ProView detection code
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*/
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.section .rodata
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TestStringForSnputs: .string "crt0.s detected ProView ...\n"
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