| 28,9 → 28,9 |
|---|
| |
| ## very low and hardware-level functions |
| |
| # Mask for interrupts 0 - 31 (bits 0 - 31) where 0 means that int has no error |
| # word and 1 means interrupt with error word |
| #define ERROR_WORD_INTERRUPT_LIST 0x00027d00 |
| # Mask for interrupts 0 - 31 (bits 0 - 31) where 0 means that int has no error word |
| # and 1 means interrupt with error word |
| #define ERROR_WORD_INTERRUPT_LIST 0x00027D00 |
| |
| .text |
| |
| 74,7 → 74,7 |
|---|
| movl MEMCPY_DST(%esp), %edi |
| movl MEMCPY_SRC(%esp), %esi |
| |
| rep movsl /* copy whole words */ |
| rep movsl /* copy as much as possible word by word */ |
| |
| movl MEMCPY_SIZE(%esp), %ecx |
| andl $3, %ecx /* size % 4 */ |
| 106,8 → 106,7 |
|---|
| paging_on: |
| movl %cr0, %edx |
| orl $(1 << 31), %edx # paging on |
| # clear Cache Disable and not Write Though |
| andl $~((1 << 30) | (1 << 29)), %edx |
| andl $~((1<<30)|(1<<29)),%edx # clear Cache Disable and not Write Though |
| movl %edx,%cr0 |
| jmp 0f |
| 0: |
| 119,11 → 118,15 |
|---|
| # Enable local APIC in MSR. |
| # |
| enable_l_apic_in_msr: |
| push %eax |
| |
| movl $0x1b, %ecx |
| rdmsr |
| orl $(1 << 11), %eax |
| orl $(0xfee00000), %eax |
| wrmsr |
| |
| pop %eax |
| ret |
| |
| # Clear nested flag |
| 148,25 → 151,17 |
|---|
| .macro handler i n |
| |
| .ifeq \i - 0x30 # Syscall handler |
| pushl %ds |
| pushl %es |
| pushl %fs |
| pushl %gs |
| push %ds |
| push %es |
| push %fs |
| push %gs |
| |
| # |
| # Push syscall arguments onto the stack |
| # |
| # NOTE: The idea behind the order of arguments passed in registers is to |
| # use all scratch registers first and preserved registers next. |
| # An optimized libc syscall wrapper can make use of this setup. |
| # |
| pushl %eax |
| pushl %ebp |
| pushl %edi |
| pushl %esi |
| pushl %ebx |
| pushl %ecx |
| pushl %edx |
| # Push arguments on stack |
| push %edi |
| push %esi |
| push %edx |
| push %ecx |
| push %eax |
| |
| # we must fill the data segment registers |
| movw $16, %ax |
| 174,15 → 169,15 |
|---|
| movw %ax, %es |
| |
| sti |
| # syscall_handler(edx, ecx, ebx, esi, edi, ebp, eax) |
| call syscall_handler |
| |
| call syscall_handler # syscall_handler(ax,cx,dx,si,di) |
| cli |
| addl $28, %esp # clean-up of parameters |
| addl $20, %esp # clean-up of parameters |
| |
| popl %gs |
| popl %fs |
| popl %es |
| popl %ds |
| pop %gs |
| pop %fs |
| pop %es |
| pop %ds |
| |
| CLEAR_NT_FLAG |
| iret |
| 211,22 → 206,22 |
|---|
| subl $4, %esp |
| .endif |
| |
| pushl %ds |
| pushl %es |
| pushl %fs |
| pushl %gs |
| push %ds |
| push %es |
| push %fs |
| push %gs |
| |
| #ifdef CONFIG_DEBUG_ALLREGS |
| pushl %ebx |
| pushl %ebp |
| pushl %edi |
| pushl %esi |
| push %ebx |
| push %ebp |
| push %edi |
| push %esi |
| #else |
| subl $16, %esp |
| sub $16, %esp |
| #endif |
| pushl %edx |
| pushl %ecx |
| pushl %eax |
| push %edx |
| push %ecx |
| push %eax |
| |
| # we must fill the data segment registers |
| movw $16, %ax |
| 240,22 → 235,22 |
|---|
| |
| CLEAR_NT_FLAG # Modifies %ecx |
| |
| popl %eax |
| popl %ecx |
| popl %edx |
| pop %eax |
| pop %ecx |
| pop %edx |
| #ifdef CONFIG_DEBUG_ALLREGS |
| popl %esi |
| popl %edi |
| popl %ebp |
| popl %ebx |
| pop %esi |
| pop %edi |
| pop %ebp |
| pop %ebx |
| #else |
| addl $16, %esp |
| add $16, %esp |
| #endif |
| |
| popl %gs |
| popl %fs |
| popl %es |
| popl %ds |
| pop %gs |
| pop %fs |
| pop %es |
| pop %ds |
| |
| addl $4, %esp # Skip error word, no matter whether real or fake. |
| iret |