| 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 |