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Set ARM byte alignment to 8.

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This commit is contained in:
Richard Barry 2009-09-29 19:58:05 +00:00
parent 98ed4f2a20
commit 2d958d3d2c
8 changed files with 35 additions and 60 deletions
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39
Source/portable/GCC/ARM7_LPC2000/portmacro.h
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@ -45,29 +45,6 @@
licensing and training services.
*/
/*
Changes from V3.2.3
+ Modified portENTER_SWITCHING_ISR() to allow use with GCC V4.0.1.
Changes from V3.2.4
+ Removed the use of the %0 parameter within the assembler macros and
replaced them with hard coded registers. This will ensure the
assembler does not select the link register as the temp register as
was occasionally happening previously.
+ The assembler statements are now included in a single asm block rather
than each line having its own asm block.
Changes from V4.5.0
+ Removed the portENTER_SWITCHING_ISR() and portEXIT_SWITCHING_ISR() macros
and replaced them with portYIELD_FROM_ISR() macro. Application code
should now make use of the portSAVE_CONTEXT() and portRESTORE_CONTEXT()
macros as per the V4.5.1 demo code.
*/
#ifndef PORTMACRO_H
#define PORTMACRO_H
@ -106,8 +83,8 @@ extern "C" {
/* Architecture specifics. */
#define portSTACK_GROWTH ( -1 )
#define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
#define portBYTE_ALIGNMENT 4
#define portNOP() asm volatile ( "NOP" );
#define portBYTE_ALIGNMENT 8
#define portNOP() __asm volatile ( "NOP" );
/*-----------------------------------------------------------*/
@ -126,7 +103,7 @@ extern volatile void * volatile pxCurrentTCB; \
extern volatile unsigned portLONG ulCriticalNesting; \
\
/* Set the LR to the task stack. */ \
asm volatile ( \
__asm volatile ( \
"LDR R0, =pxCurrentTCB \n\t" \
"LDR R0, [R0] \n\t" \
"LDR LR, [R0] \n\t" \
@ -163,7 +140,7 @@ extern volatile void * volatile pxCurrentTCB; \
extern volatile unsigned portLONG ulCriticalNesting; \
\
/* Push R0 as we are going to use the register. */ \
asm volatile ( \
__asm volatile ( \
"STMDB SP!, {R0} \n\t" \
\
/* Set R0 to point to the task stack pointer. */ \
@ -203,9 +180,9 @@ extern volatile unsigned portLONG ulCriticalNesting; \
( void ) pxCurrentTCB; \
}
extern void vTaskSwitchContext( void );
#define portYIELD_FROM_ISR() vTaskSwitchContext()
#define portYIELD() asm volatile ( "SWI" )
#define portYIELD() __asm volatile ( "SWI" )
/*-----------------------------------------------------------*/
@ -229,7 +206,7 @@ extern volatile unsigned portLONG ulCriticalNesting; \
#else
#define portDISABLE_INTERRUPTS() \
asm volatile ( \
__asm volatile ( \
"STMDB SP!, {R0} \n\t" /* Push R0. */ \
"MRS R0, CPSR \n\t" /* Get CPSR. */ \
"ORR R0, R0, #0xC0 \n\t" /* Disable IRQ, FIQ. */ \
@ -237,7 +214,7 @@ extern volatile unsigned portLONG ulCriticalNesting; \
"LDMIA SP!, {R0} " ) /* Pop R0. */
#define portENABLE_INTERRUPTS() \
asm volatile ( \
__asm volatile ( \
"STMDB SP!, {R0} \n\t" /* Push R0. */ \
"MRS R0, CPSR \n\t" /* Get CPSR. */ \
"BIC R0, R0, #0xC0 \n\t" /* Enable IRQ, FIQ. */ \