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/* A setjmp.c for Moxie
   Copyright (C) 2009  Anthony Green

   The authors hereby grant permission to use, copy, modify, distribute,
   and license this software and its documentation for any purpose, provided
   that existing copyright notices are retained in all copies and that this
   notice is included verbatim in any distributions. No written agreement,
   license, or royalty fee is required for any of the authorized uses.
   Modifications to this software may be copyrighted by their authors
   and need not follow the licensing terms described here, provided that
   the new terms are clearly indicated on the first page of each file where
   they apply.  */

# setjmp/longjmp for moxie.  The jmpbuf looks like this:
#       
# Register      jmpbuf offset
#   $r0           0x00
#   $r1           0x04
#   $r2           0x08
#   $r3           0x0c
#   $r4           0x10
#   $r5           0x14
#   $r6           0x18
#   $r7           0x1c
#   $r8           0x20
#   $r9           0x24
#   $r10          0x28
#   $r11          0x2c
#   $r12          0x30
#   $r13          0x34
#   $fp           0x38
#   $sp           0x3c

        .text
        .global setjmp
        .type   setjmp,@function
setjmp:
        st.l    ($r0),     $r0
        sto.l   0x04($r0), $r1
        sto.l   0x08($r0), $r2
        sto.l   0x0c($r0), $r3
        sto.l   0x10($r0), $r4
        sto.l   0x14($r0), $r5
        sto.l   0x18($r0), $r6
        sto.l   0x1c($r0), $r7
        sto.l   0x20($r0), $r8
        sto.l   0x24($r0), $r9
        sto.l   0x28($r0), $r10
        sto.l   0x2c($r0), $r11
        sto.l   0x30($r0), $r12
        sto.l   0x34($r0), $r13
        sto.l   0x38($r0), $sp
        sto.l   0x3c($r0), $fp
        ldi.l   $r0, 0x00
        ret
.Lend1:
        .size   setjmp,.Lend1-setjmp

        .global longjmp
        .type   longjmp,@function
longjmp:
        ldi.l   $r2, 0x00
        cmp     $r1, $r2
        beq     .Lreturn1
        ldo.l   $r1, 0x04($r0)
        ldo.l   $r2, 0x08($r0)
        ldo.l   $r3, 0x0c($r0)
        ldo.l   $r4, 0x10($r0)
        ldo.l   $r5, 0x14($r0)
        ldo.l   $r6, 0x18($r0)
        ldo.l   $r7, 0x1c($r0)
        ldo.l   $r8, 0x20($r0)
        ldo.l   $r9, 0x24($r0)
        ldo.l   $r10, 0x28($r0)
        ldo.l   $r11, 0x2c($r0)
        ldo.l   $r12, 0x30($r0)
        ldo.l   $r13, 0x34($r0)
        ldo.l   $sp, 0x38($r0)
        ldo.l   $fp, 0x3c($r0)
        mov     $r0, $r1
        ret
.Lreturn1:
        ldo.l   $r1, 0x04($r0)
        ldo.l   $r2, 0x08($r0)
        ldo.l   $r3, 0x0c($r0)
        ldo.l   $r4, 0x10($r0)
        ldo.l   $r5, 0x14($r0)
        ldo.l   $r6, 0x18($r0)
        ldo.l   $r7, 0x1c($r0)
        ldo.l   $r8, 0x20($r0)
        ldo.l   $r9, 0x24($r0)
        ldo.l   $r10, 0x28($r0)
        ldo.l   $r11, 0x2c($r0)
        ldo.l   $r12, 0x30($r0)
        ldo.l   $r13, 0x34($r0)
        ldo.l   $sp, 0x38($r0)
        ldo.l   $fp, 0x3c($r0)
        ldi.l   $r0, 0x01
        ret
.Lend2:
        .size   longjmp,.Lend2-longjmp