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Avoid corrupting eax during system call.

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Danila Fedorin 2019-04-23 16:14:21 -07:00
parent 6ab267bb9b
commit bbdb8bd811
1 changed files with 4 additions and 6 deletions
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10
kern/trapentry.S
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@ -81,14 +81,12 @@ TRAPHANDLER(t_default, T_DEFAULT);
.globl _alltraps .globl _alltraps
_alltraps: _alltraps:
sub $0x2, %esp sub $0x2, %esp
mov %ds, %eax pushw %ds
push %ax
sub $0x2, %esp sub $0x2, %esp
mov %es, %eax pushw %es
push %ax
pushal pushal
mov $(GD_KD), %eax mov $(GD_KD), %eax
movl %eax, %ds movw %ax, %ds
movl %eax, %es movw %ax, %es
pushl %esp pushl %esp
call trap call trap