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ARM: fixup interrupt enable/disable/restore functions

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This commit is contained in:
Ithamar R. Adema
2012-11-05 01:45:25 +01:00
parent 02081e0950
commit f8b47f2b2a
1 changed files with 16 additions and 7 deletions
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src/system/kernel/arch/arm/arch_asm.S
+16 -7
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@@ -27,8 +27,8 @@ FUNCTION_END(arch_int_enable_interrupts)
*/
FUNCTION(arch_int_disable_interrupts):
mrs r0, cpsr
orr r0, r0, #(1<<7)
msr cpsr_c, r0
orr r1, r0, #(1<<7)
msr cpsr_c, r1
bx lr
FUNCTION_END(arch_int_disable_interrupts)
@@ -37,8 +37,8 @@ FUNCTION_END(arch_int_disable_interrupts)
*/
FUNCTION(arch_int_restore_interrupts):
mrs r1, cpsr
orr r0,r0, #(1<<7)
bic r1, r1,#(1<<7)
and r0, r0, #(1<<7)
bic r1, r1, #(1<<7)
orr r1, r1, r0
msr cpsr_c, r1
bx lr
@@ -49,10 +49,19 @@ FUNCTION_END(arch_int_restore_interrupts)
FUNCTION(arch_int_are_interrupts_enabled):
mrs r0, cpsr
and r0, r0, #(1<<7) /*read the I bit*/
cmp r0,#0
moveq r0,#1
movne r0,#0
cmp r0, #0
moveq r0, #1
movne r0, #0
bx lr
FUNCTION_END(arch_int_are_interrupts_enabled)
/* void arm_context_switch(struct arch_thread* oldState,
struct arch_thread* newState); */
FUNCTION(arm_context_switch):
stmfd sp!, { r0-r12, lr }
str sp, [r0]
ldr sp, [r1]
ldmfd sp!, { r0-r12, lr }
bx lr
FUNCTION_END(arm_context_switch)