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| author | rtm <rtm> | 2006-06-13 15:50:06 +0000 |
|---|---|---|
| committer | rtm <rtm> | 2006-06-13 15:50:06 +0000 |
| commit | 0a70d042d04e084da4226e7d0d684dedcae06d78 (patch) | |
| tree | 3dfa629b4e4b44b399fb13b384ed9b50dd03f997 /trapasm.S | |
| parent | 70a895f63c504f255a28f63efdcfc6b39b2572c5 (diff) | |
| download | xv6-labs-0a70d042d04e084da4226e7d0d684dedcae06d78.tar.gz xv6-labs-0a70d042d04e084da4226e7d0d684dedcae06d78.tar.bz2 xv6-labs-0a70d042d04e084da4226e7d0d684dedcae06d78.zip | |
more or less take traps/interrupts
Diffstat (limited to 'trapasm.S')
| -rw-r--r-- | trapasm.S | 16 |
1 files changed, 16 insertions, 0 deletions
@@ -1,4 +1,20 @@ +#include "mmu.h" + .text + .globl alltraps + .globl trap +alltraps: + /* vectors.S sends all traps here */ + pushl %ds # build + pushl %es # trap + pushal # frame + movl $16,%eax # SEG_KDATA << 3 + movw %ax,%ds # kernel + movw %ax,%es # segments + pushl %esp # pass pointer to this trapframe + call trap # and call trap() + # return falls through to trapret... + .globl trapret /* * a forked process RETs here |