108 lines
1.4 KiB
ArmAsm
108 lines
1.4 KiB
ArmAsm
.global port_int_disable
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.global port_int_enable
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.global port_cpsr_save
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.global port_cpsr_restore
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.global port_sched_start
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.global port_context_switch
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.global start_r
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.extern k_curr_task
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.extern k_next_task
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.text
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.align 4
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.type port_int_disable, %function
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port_int_disable:
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clri
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j [blink]
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.type port_int_enable, %function
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port_int_enable:
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seti
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j [blink]
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.type port_cpsr_save, %function
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port_cpsr_save:
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clri r0
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j [blink]
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.type port_cpsr_restore, %function
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port_cpsr_restore:
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seti r0
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j [blink]
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.type port_sched_start, %function
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port_sched_start:
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ld r0, [k_curr_task]
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ld r1, [k_next_task]
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ld r2, [r1]
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st r2, [r0] /*k_curr_task=k_next_task*/
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ld r0, [r2]
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ld sp, [r0]
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pop r3
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j [r3]
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.type start_r, %function
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start_r:
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pop blink;
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pop r1
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pop r2
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pop r0
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j_s.d [r1]
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kflag r2
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.type port_context_switch, %function
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port_context_switch:
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pop r15
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pop r14
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pop r13
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pop blink
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pop fp
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pop gp
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j [blink]
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.type PendSV_Handler, %function
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TaskSwitchContext:
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clri
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push gp
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push fp
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push blink
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push r13
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push r14
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push r15
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mov r2, dispatch_r
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push r2
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mov r5, k_curr_task
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ld r6, [r5]
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st r0, [r6]
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mov r1, k_next_task
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ld r2, [r1]
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st r2, [r5]
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ld r0, [r2]
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ld sp, [r0]
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seti
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j [r0]
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dispatch_r:
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pop r15
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pop r14
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pop r13
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pop blink
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pop fp
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pop gp
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j [blink]
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