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[bsp][tms320f28379d] Modify to C28x Compiler Register Conventions

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xuzhuoyi
2018-09-03 23:02:16 +08:00
parent 5fd1213e73
commit 9d8e27e626
1 changed files with 12 additions and 10 deletions
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libcpu/c28x/context.s
+12 -10
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@@ -80,28 +80,30 @@ _rt_hw_interrupt_enable:
;
; void rt_hw_context_switch(rt_uint32 from, rt_uint32 to);
; r0 --> from
; r1 --> to
; r4 --> to
.asmfunc
_rt_hw_context_switch_interrupt:
_rt_hw_context_switch:
MOVL XAR0, #0
MOV AR0, AL
MOVL XAR4, *-SP[4]
; set rt_thread_switch_interrupt_flag to 1
MOVL XAR2, #_rt_thread_switch_interrupt_flag
MOVL XAR3, *XAR2
MOVL ACC, XAR3
MOVL XAR5, #_rt_thread_switch_interrupt_flag
MOVL XAR6, *XAR5
MOVL ACC, XAR6
CMPB AL, #1
B _reswitch, EQ
MOVL XAR3, #1
MOVL *XAR2, XAR3
MOVL XAR6, #1
MOVL *XAR5, XAR6
MOVL XAR2, #_rt_interrupt_from_thread ; set rt_interrupt_from_thread
MOVL *XAR2, XAR0
MOVL XAR5, #_rt_interrupt_from_thread ; set rt_interrupt_from_thread
MOVL *XAR5, XAR0
_reswitch:
MOVL XAR2, #_rt_interrupt_to_thread ; set rt_interrupt_to_thread
MOVL *XAR2, XAR1
MOVL XAR5, #_rt_interrupt_to_thread ; set rt_interrupt_to_thread
MOVL *XAR5, XAR4
TRAP #16
LRETR