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Continue work on the SH2A port.

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This commit is contained in:
Richard Barry 2010-02-15 17:16:38 +00:00
parent 04c48138a8
commit 9b27b75715
4 changed files with 53 additions and 54 deletions
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48
Source/portable/Renesas/SH2A_FPU/ISR_Support.inc Normal file
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@ -0,0 +1,48 @@
.macro portSAVE_CONTEXT
; Save r0 to r14 and pr.
movml.l r15, @-r15
; Save mac1, mach and gbr
sts.l macl, @-r15
sts.l mach, @-r15
stc.l gbr, @-r15
; Get the address of pxCurrentTCB
mov.l #_pxCurrentTCB, r0
; Get the address of pxTopOfStack from the TCB.
mov.l @r0, r0
; Save the stack pointer in pxTopOfStack.
mov.l r15, @r0
.endm
;-----------------------------------------------------------
.macro portRESTORE_CONTEXT
; Get the address of the pxCurrentTCB variable.
mov.l #_pxCurrentTCB, r0
; Get the address of the task stack from pxCurrentTCB.
mov.l @r0, r0
; Get the task stack itself into the stack pointer.
mov.l @r0, r15
; Restore system registers.
ldc.l @r15+, gbr
lds.l @r15+, mach
lds.l @r15+, macl
; Restore r0 to r14 and PR
movml.l @r15+, r15
; Pop the SR and PC to jump to the start of the task.
rte
nop
.endm
;-----------------------------------------------------------

7
Source/portable/Renesas/SH2A_FPU/port.c
View file

@ -241,7 +241,7 @@ long lInterruptMask;
trapa( portYIELD_TRAP_NO );
/* Restore the interrupt mask to whatever it was previously (when the
function was entered. */
function was entered). */
set_imask( ( int ) lInterruptMask );
}
/*-----------------------------------------------------------*/
@ -290,8 +290,3 @@ extern void * volatile pxCurrentTCB;
/*-----------------------------------------------------------*/

49
Source/portable/Renesas/SH2A_FPU/portasm.src
View file

@ -65,54 +65,7 @@
.section P
.macro portSAVE_CONTEXT
; Save r0 to r14 and pr.
movml.l r15, @-r15
; Save mac1, mach and gbr
sts.l macl, @-r15
sts.l mach, @-r15
stc.l gbr, @-r15
; Get the address of pxCurrentTCB
mov.l #_pxCurrentTCB, r0
; Get the address of pxTopOfStack from the TCB.
mov.l @r0, r0
; Save the stack pointer in pxTopOfStack.
mov.l r15, @r0
.endm
;-----------------------------------------------------------
.macro portRESTORE_CONTEXT
; Get the address of the pxCurrentTCB variable.
mov.l #_pxCurrentTCB, r0
; Get the address of the task stack from pxCurrentTCB.
mov.l @r0, r0
; Get the task stack itself into the stack pointer.
mov.l @r0, r15
; Restore system registers.
ldc.l @r15+, gbr
lds.l @r15+, mach
lds.l @r15+, macl
; Restore r0 to r14 and PR
movml.l @r15+, r15
; Pop the SR and PC to jump to the start of the task.
rte
nop
.endm
;-----------------------------------------------------------
.INCLUDE "ISR_Support.inc"
_vPortStartFirstTask:

3
Source/portable/Renesas/SH2A_FPU/portmacro.h
View file

@ -102,6 +102,9 @@ portSTACK_TYPE and portBASE_TYPE. */
void vPortYield( void );
#define portYIELD() vPortYield()
extern void vTaskSwitchContext( void );
#define portYIELD_FROM_ISR( x ) if( x != pdFALSE ) vTaskSwitchContext()
/*
* This function tells the kernel that the task referenced by xTask is going to
* use the floating point registers and therefore requires the floating point