37,7 → 37,6 |
.global xen_callback |
.global xen_failsafe_callback |
.global enable_l_apic_in_msr |
.global interrupt_handlers |
.global memcpy |
.global memcpy_from_uspace |
.global memcpy_from_uspace_failover_address |
123,149 → 122,3 |
|
pop %eax |
ret |
|
# Clear nested flag |
# overwrites %ecx |
.macro CLEAR_NT_FLAG |
pushfl |
pop %ecx |
and $0xffffbfff,%ecx |
push %ecx |
popfl |
.endm |
|
## Declare interrupt handlers |
# |
# Declare interrupt handlers for n interrupt |
# vectors starting at vector i. |
# |
# The handlers setup data segment registers |
# and call exc_dispatch(). |
# |
#define INTERRUPT_ALIGN 64 |
.macro handler i n |
|
.ifeq \i-0x30 # Syscall handler |
push %ds |
push %es |
push %fs |
push %gs |
|
# Push arguments on stack |
push %edi |
push %esi |
push %edx |
push %ecx |
push %eax |
|
# we must fill the data segment registers |
movw $16,%ax |
movw %ax,%ds |
movw %ax,%es |
|
sti |
|
call syscall_handler # syscall_handler(ax,cx,dx,si,di) |
cli |
addl $20, %esp # clean-up of parameters |
|
pop %gs |
pop %fs |
pop %es |
pop %ds |
|
CLEAR_NT_FLAG |
iret |
.else |
/* |
* This macro distinguishes between two versions of ia32 exceptions. |
* One version has error word and the other does not have it. |
* The latter version fakes the error word on the stack so that the |
* handlers and istate_t can be the same for both types. |
*/ |
.iflt \i-32 |
.if (1 << \i) & ERROR_WORD_INTERRUPT_LIST |
/* |
* With error word, do nothing |
*/ |
.else |
/* |
* Version without error word, |
*/ |
subl $4, %esp |
.endif |
.else |
/* |
* Version without error word, |
*/ |
subl $4, %esp |
.endif |
|
push %ds |
push %es |
push %fs |
push %gs |
|
#ifdef CONFIG_DEBUG_ALLREGS |
push %ebx |
push %ebp |
push %edi |
push %esi |
#else |
sub $16, %esp |
#endif |
push %edx |
push %ecx |
push %eax |
|
# we must fill the data segment registers |
movw $16,%ax |
movw %ax,%ds |
movw %ax,%es |
|
pushl %esp # *istate |
pushl $(\i) # intnum |
call exc_dispatch # excdispatch(intnum, *istate) |
addl $8,%esp # Clear arguments from stack |
|
CLEAR_NT_FLAG # Modifies %ecx |
|
pop %eax |
pop %ecx |
pop %edx |
#ifdef CONFIG_DEBUG_ALLREGS |
pop %esi |
pop %edi |
pop %ebp |
pop %ebx |
#else |
add $16, %esp |
#endif |
|
pop %gs |
pop %fs |
pop %es |
pop %ds |
|
addl $4,%esp # Skip error word, no matter whether real or fake. |
iret |
.endif |
|
.align INTERRUPT_ALIGN |
.if (\n-\i)-1 |
handler "(\i+1)",\n |
.endif |
.endm |
|
# keep in sync with pm.h !!! |
IDT_ITEMS=64 |
.align INTERRUPT_ALIGN |
interrupt_handlers: |
h_start: |
handler 0 IDT_ITEMS |
h_end: |
|
.data |
.global interrupt_handler_size |
|
interrupt_handler_size: .long (h_end-h_start)/IDT_ITEMS |