59 lines
778 B
ArmAsm
59 lines
778 B
ArmAsm
#
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# arch/arm/setjmp-thumb.S
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#
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# setjmp/longjmp for the ARM/thumb architecture
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#
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#
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# The jmp_buf is assumed to contain the following, in order:
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# lr
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# r4
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# r5
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# r6
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# r7
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# r8
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# r9
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# r10
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# fp
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# sp
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#
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.text
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.align 4
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.globl setjmp
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.type setjmp, #function
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.thumb_func
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setjmp:
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mov r3, lr
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stmia r0!, {r3, r4, r5, r6, r7}
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mov r3, r8
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mov r4, r9
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mov r5, r10
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mov r6, fp
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mov r7, sp
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stmia r0!, {r3, r4, r5, r6, r7}
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mov r0, #0
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mov pc, lr
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.size setjmp,.-setjmp
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.text
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.align 4
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.globl longjmp
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.type longjmp, #function
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.thumb_func
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longjmp:
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mov r2, r0
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add r0, #5*4
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ldmia r0!, {r3, r4, r5, r6, r7}
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mov r8, r3
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mov r9, r4
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mov r10, r5
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mov fp, r6
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mov sp, r7
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ldmia r2!, {r3, r4, r5, r6, r7}
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mov r0, r1
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bne 1f
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mov r0, #1
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1: mov pc, r3
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.size longjmp,.-longjmp
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