Contents of /trunk/mkinitrd-magellan/klibc/usr/klibc/arch/m68k/vfork.S
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Revision 532 -
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Sat Sep 1 22:45:15 2007 UTC (16 years, 8 months ago) by niro
File size: 460 byte(s)
Sat Sep 1 22:45:15 2007 UTC (16 years, 8 months ago) by niro
File size: 460 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
| 1 | # |
| 2 | # usr/klibc/arch/m68k/vfork.S |
| 3 | # |
| 4 | # vfork is nasty - there must be nothing at all on the stack above |
| 5 | # the stack frame of the enclosing function. |
| 6 | # |
| 7 | |
| 8 | #include <asm/unistd.h> |
| 9 | |
| 10 | .text |
| 11 | .align 2 |
| 12 | .globl vfork |
| 13 | .type vfork, @function |
| 14 | vfork: |
| 15 | move.l (%sp)+, %d1 /* Return address */ |
| 16 | move.l # __NR_vfork, %d0 |
| 17 | trap #0 |
| 18 | move.l %d1, -(%sp) |
| 19 | cmpi.l #-4095, %d0 |
| 20 | blt.l 1f |
| 21 | neg.l %d0 |
| 22 | move.l %d0, (errno) |
| 23 | moveq #-1, %d0 |
| 24 | 1: |
| 25 | movea.l %d0, %a0 |
| 26 | rts |
| 27 | |
| 28 | .size vfork, .-vfork |