52 lines
1.1 KiB
ArmAsm
52 lines
1.1 KiB
ArmAsm
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.set noat
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.globl .Lexception_exit
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.section .exceptions.exit.label
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.Lexception_exit:
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.section .exceptions.exit, "xa"
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ldw r5, 68(sp)
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/* get exception back */
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ldw ea, 72(sp)
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/* if(rt_thread_switch_interrupt_flag == 0) goto no_need_context */
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ldw r4,%gprel(rt_thread_switch_interrupt_flag)(gp)
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beq r4,zero,no_need_context
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need_context:
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movia ea, rt_hw_context_switch_interrupt_do
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/* disable interrupt */
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mov r5, zero
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no_need_context:
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ldw ra, 0(sp)
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wrctl estatus, r5
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/*
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* Leave a gap in the stack frame at 4(sp) for the muldiv handler to
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* store zero into.
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*/
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ldw r1, 8(sp)
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ldw r2, 12(sp)
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ldw r3, 16(sp)
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ldw r4, 20(sp)
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ldw r5, 24(sp)
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ldw r6, 28(sp)
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ldw r7, 32(sp)
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ldw r8, 36(sp)
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ldw r9, 40(sp)
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ldw r10, 44(sp)
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ldw r11, 48(sp)
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ldw r12, 52(sp)
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ldw r13, 56(sp)
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ldw r14, 60(sp)
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ldw r15, 64(sp)
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addi sp, sp, 76
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eret
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