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Compare Revisions

• This comparison shows the changes necessary to convert path

  → /kernel/trunk/arch/amd64/ @ 1287

  → /kernel/trunk/arch/amd64/ @ 1288

  ↔ Reverse comparison

• Compare Path:	Rev

  With Path:	Rev

Ignore whitespace Rev 1287 → Rev 1288

/kernel/trunk/arch/amd64/include/interrupt.h
86,6 → 86,11
__u64 stack[]; /* Additional data on stack */
};
static inline void istate_set_retaddr(istate_t *istate, __address retaddr)
{
istate->rip = retaddr;
}
extern void (* disable_irqs_function)(__u16 irqmask);
extern void (* enable_irqs_function)(__u16 irqmask);
extern void (* eoi_function)(void);

/kernel/trunk/arch/amd64/src/asm_utils.S
60,16 → 60,60
movq $halt, (%rsp)
jmp printf
.global memcpy
memcpy:
jmp _memcpy
.global cpuid
.global has_cpuid
.global rdtsc
.global read_efer_flag
.global set_efer_flag
.global memcpy
.global memcpy_from_uspace
.global memcpy_to_uspace
.global memcpy_from_uspace_failover_address
.global memcpy_to_uspace_failover_address
#define MEMCPY_DST %rdi
#define MEMCPY_SRC %rsi
#define MEMCPY_SIZE %rdx
/**
* Copy memory from/to userspace.
*
* This is almost conventional memcpy().
* The difference is that there is a failover part
* to where control is returned from a page fault if
* the page fault occurs during copy_from_uspace()
* or copy_to_uspace().
*
* @param MEMCPY_DST Destination address.
* @param MEMCPY_SRC Source address.
* @param MEMCPY_SIZE Number of bytes to copy.
*
* @retrun MEMCPY_SRC on success, 0 on failure.
*/
memcpy:
memcpy_from_uspace:
memcpy_to_uspace:
movq MEMCPY_SRC, %rax
movq MEMCPY_SIZE, %rcx
shrq $3, %rcx /* size / 8 */
rep movsq /* copy as much as possible word by word */
movq MEMCPY_SIZE, %rcx
andq $7, %rcx /* size % 8 */
jz 0f
rep movsb /* copy the rest byte by byte */
0:
ret /* return MEMCPY_SRC, success */
memcpy_from_uspace_failover_address:
memcpy_to_uspace_failover_address:
xorq %rax, %rax /* return 0, failure */
ret
## Determine CPUID support
#
# Return 0 in EAX if CPUID is not support, 1 if supported.

/kernel/trunk/arch/amd64/src/mm/page.c
166,7 → 166,7
__address page;
page = read_cr2();
if (!as_page_fault(page)) {
if (as_page_fault(page, istate) == AS_PF_FAULT) {
print_info_errcode(n, istate);
printf("Page fault address: %llX\n", page);
panic("page fault\n");