120 lines
2.7 KiB
NASM
120 lines
2.7 KiB
NASM
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;
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;;; Microsoft Research Singularity
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;;;
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;;; Copyright (c) Microsoft Corporation. All rights reserved.
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;;;
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;;; Singularity ARM bootstrap entry point.
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;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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SINGLE_CPU equ {TRUE}
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OMAP3430_CPU_ARGS_ADDR equ 0x8000fff0
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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CODE32
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AREA |.text|, CODE, ARM
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EXPORT |BootEntry|
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IMPORT |?BootPhase1@@YAHXZ|
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|BootEntry| PROC
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str lr, [sp, #-4]!
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sub sp, sp, #8
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;; Put the processor in System mode.
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mov r6, sp
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mrs r4, cpsr
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bic r5, r4, #0x1F
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orr r5, r5, #0x1F
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msr cpsr_c, r5
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mov sp, r6
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bl |?BootPhase1@@YAHXZ|
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str r0, [sp, #4]
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ldr r3, [sp, #4]
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str r3, [sp]
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ldr r0, [sp]
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add sp, sp, #8
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ldr pc, [sp], #4
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ENDP
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EXPORT |?GetStack@@YAIXZ|
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|?GetStack@@YAIXZ| PROC
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mov r0, sp
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bx lr
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ENDP
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EXPORT |?GetCode@@YAIXZ|
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|?GetCode@@YAIXZ| PROC
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mov r0, lr
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bx lr
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ENDP
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EXPORT |?DebugBreak@@YAXXZ|
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|?DebugBreak@@YAXXZ| PROC
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bkpt 0xffff
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bx lr
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ENDP
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;;; "uint32 GetMidr(void)"
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EXPORT |?GetMidr@@YAIXZ|
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|?GetMidr@@YAIXZ| PROC
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mrc p15,0,r0,c0,c0,0
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bx lr
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ENDP
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;;; "uint32 GetPfr0(void)"
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EXPORT |?GetPfr0@@YAIXZ|
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|?GetPfr0@@YAIXZ| PROC
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mrc p15,0,r0,c0,c1,0
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bx lr
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ENDP
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;;; "uint32 GetPfr1(void)"
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EXPORT |?GetPfr1@@YAIXZ|
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|?GetPfr1@@YAIXZ| PROC
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mrc p15,0,r0,c0,c1,1
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bx lr
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ENDP
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;;; "uintptr GetVbar(void)"
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EXPORT |?GetVbar@@YAIXZ|
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|?GetVbar@@YAIXZ| PROC
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mrc p15,0,r0,c12,c0,0
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bx lr
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ENDP
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;;; "void SetVbar(uintptr)"
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EXPORT |?SetVbar@@YAXI@Z|
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|?SetVbar@@YAXI@Z| PROC
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mcr p15,0,r0,c12,c0,0
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bx lr
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ENDP
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;;; void SetTpidrurw(uintptr)
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EXPORT |?SetTpidrurw@@YAXI@Z|
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|?SetTpidrurw@@YAXI@Z| PROC
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IF SINGLE_CPU
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ldr r1, =OMAP3430_CPU_ARGS_ADDR
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str r0, [r1]
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ELSE
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mcr p15,0,r0,c13,c0,2 ;; Write ARMv7 CP15 User R/W Thread ID Register (TPIDRURW)
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ENDIF
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bx lr
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ENDP
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END
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