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给lwp传递参数

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heyuanjie
2018-06-29 15:32:53 +08:00
parent 0f3820f1b6
commit 7d3af8e9ff
5 changed files with 77 additions and 30 deletions
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13
components/lwp/arch/arm/cortex-m7/lwp_rvds.S
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@@ -34,29 +34,28 @@
IMPORT lwp_set_kernel_sp
;/*
; * void lwp_user_entry(u32 R0_text_addr, u32 R1_data_addr);
; * void lwp_user_entry(args, text, data);
; */
lwp_user_entry PROC
EXPORT lwp_user_entry
PUSH {R0-R1} ; push text&data addr.
PUSH {R0-R3} ; push text&data addr.
MOV R0, SP ; v1 = SP
BL lwp_set_kernel_sp ; lwp_set_kernel_sp(v1)
POP {R0-R1} ; pop app address to R1.
; set CPU to user-thread mode.
MRS R2, CONTROL
ORR R2, R2, #0x03 ; use PSP, user-thread mode.
MSR CONTROL, R2
POP {R0-R3} ; pop app address to R1.
; set data address.
MOV R9, R1
MOV R9, R2
; run app, only Thumb-mode.
ORR R0, R0, #0x01
BX R0
ORR R1, R1, #0x01
BX R1
; never reach here!
ENDP