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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [machine/] [m32r/] [setjmp.S] - Blame information for rev 207

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Line No. Rev Author Line
1 207 jeremybenn
# setjmp/longjmp for m32r.  The jmpbuf looks like this:
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#
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# Register      jmpbuf offset
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# reserved      0x00
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# R8            0x04
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# R9            0x08
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# R10           0x0c
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# R11           0x10
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# R12           0x14
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# R13 (FP)      0x18
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# R14 (LR)      0x1c
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# R15 (SP)      0x20
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# reserved      0x24
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        .text
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        .global setjmp
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setjmp:
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        ;addi   r0, #-4         ; commented out as first word is reserved
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        ;st     r1, @+r0
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        st      r8, @+r0
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        st      r9, @+r0
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        st      r10, @+r0
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        st      r11, @+r0
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        st      r12, @+r0
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        st      r13, @+r0
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        st      r14, @+r0
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        st      r15, @+r0
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# Return 0 to caller.
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        ldi     r0, #0
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        jmp     lr
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        .global longjmp
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longjmp:
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        addi    r0, #4          ; first word is reserved
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        ;ld     r1, @r0+
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        ld      r8, @r0+
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        ld      r9, @r0+
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        ld      r10, @r0+
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        ld      r11, @r0+
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        ld      r12, @r0+
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        ld      r13, @r0+
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        ld      r2, @r0+        ; return address
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        ld      r15, @r0+
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# If caller attempted to return 0, return 1 instead.
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        mv      r0, r1
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        bnez    r0, .Lnonzero
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        ldi     r0, #1
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.Lnonzero:
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        jmp     r2

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