| /kernel/trunk/core/except.inc |
|---|
| 0,0 → 1,64 |
| reg_eip equ ebp+4 |
| reg_cs equ ebp+8 |
| reg_eflags equ ebp+12 |
| reg_esp equ ebp+16 |
| reg_ss equ ebp+20 |
| fpu_ctrl equ ebp-28 |
| align 4 |
| except_16: |
| push ebp |
| mov ebp, esp |
| sub esp, 28 |
| push eax |
| push ebx |
| push ecx |
| push edx |
| mov ebx, [ss:CURRENT_TASK] |
| shl ebx, 8 |
| mov eax, [ss:ebx+PROC_BASE+APPDATA.fpu_handler] |
| test eax, eax |
| jz .default |
| mov ecx, [reg_eip] |
| mov edx, [reg_esp] |
| sub edx, 4 |
| mov [ss:edx+new_app_base], ecx |
| mov [reg_esp], edx |
| mov dword [reg_eip], eax |
| pop edx |
| pop ecx |
| pop ebx |
| pop eax |
| leave |
| iretd |
| .default: |
| fnstenv [fpu_ctrl] |
| fnclex |
| or word [fpu_ctrl], 0111111b |
| fldenv [fpu_ctrl] |
| pop edx |
| pop ecx |
| pop ebx |
| pop eax |
| leave |
| iretd |
| restore reg_eip |
| restore reg_cs |
| restore reg_eflags |
| restore reg_esp |
| restore reg_ss |
| restore fpu_ctrl |