; ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ; syscall.asm ; ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ; Forrest Yu, 2005 ; ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ %include "sconst.inc" _NR_get_ticks equ 0 ; 要跟 global.c 中 sys_call_table 的定义相对应！ _NR_get_pid equ 1 ; //add by visual 2016.4.6 _NR_kmalloc equ 2 ; //add by visual 2016.4.6 _NR_kmalloc_4k equ 3 ; //add by visual 2016.4.7 _NR_malloc equ 4 ; //add by visual 2016.4.7 _NR_malloc_4k equ 5 ; //add by visual 2016.4.7 _NR_free equ 6 ; //add by visual 2016.4.7 _NR_free_4k equ 7 ; //add by visual 2016.4.7 _NR_fork equ 8 ; //add by visual 2016.4.8 _NR_pthread equ 9 ; //add by visual 2016.4.11 _NR_udisp_int equ 10 ; //add by visual 2016.5.16 _NR_udisp_str equ 11 ; //add by visual 2016.5.16 _NR_exec equ 12 ; //add by visual 2016.5.16 _NR_yield equ 13 ; //added by xw, 17/12 _NR_sleep equ 14 ; //added by xw, 17/12 _NR_print_E equ 15 ; //added by xw, 18/4/27 _NR_print_F equ 16 ; //added by xw, 18/4/27 _NR_open equ 17 ; //added by xw, 18/6/18 _NR_close equ 18 ; //added by xw, 18/6/18 _NR_read equ 19 ; //added by xw, 18/6/18 _NR_write equ 20 ; //added by xw, 18/6/18 _NR_lseek equ 21 ; //added by xw, 18/6/18 _NR_unlink equ 22 ; //added by xw, 18/6/18 _NR_create equ 23 ; //added by mingxuan 2019-5-17 _NR_delete equ 24 ; //added by mingxuan 2019-5-17 _NR_opendir equ 25 ; //added by mingxuan 2019-5-17 _NR_createdir equ 26 ; //added by mingxuan 2019-5-17 _NR_deletedir equ 27 ; //added by mingxuan 2019-5-17 INT_VECTOR_SYS_CALL equ 0x90 ; 导出符号 global get_ticks global get_pid ; //add by visual 2016.4.6 global kmalloc ; //add by visual 2016.4.6 global kmalloc_4k ; //add by visual 2016.4.7 global malloc ; //add by visual 2016.4.7 global malloc_4k ; //add by visual 2016.4.7 global free ; //add by visual 2016.4.7 global free_4k ; //add by visual 2016.4.7 global fork ; //add by visual 2016.4.8 global pthread ; //add by visual 2016.4.11 global udisp_int ; //add by visual 2016.5.16 global udisp_str ; //add by visual 2016.5.16 global exec ; //add by visual 2016.5.16 global yield ; //added by xw global sleep ; //added by xw global print_E ; //added by xw global print_F ; //added by xw global open ; //added by xw, 18/6/18 global close ; //added by xw, 18/6/18 global read ; //added by xw, 18/6/18 global write ; //added by xw, 18/6/18 global lseek ; //added by xw, 18/6/18 global unlink ; //added by xw, 18/6/19 global create ; //added by mingxuan 2019-5-17 global delete ; //added by mingxuan 2019-5-17 global opendir ; //added by mingxuan 2019-5-17 global createdir ; //added by mingxuan 2019-5-17 global deletedir ; //added by mingxuan 2019-5-17 bits 32 [section .text] ; ==================================================================== ; get_ticks ; ==================================================================== get_ticks: mov eax, _NR_get_ticks int INT_VECTOR_SYS_CALL ret ; ==================================================================== ; get_pid //add by visual 2016.4.6 ; ==================================================================== get_pid: mov eax, _NR_get_pid int INT_VECTOR_SYS_CALL ret ; ; ==================================================================== ; ; kmalloc //add by visual 2016.4.6 ; ; ==================================================================== ; kmalloc: ; push ebx ; mov ebx,[esp+4] ; 将C函数调用时传来的参数放到ebx里!! ; mov eax, _NR_kmalloc ; int INT_VECTOR_SYS_CALL ; pop ebx ; ret ; ; ==================================================================== ; ; kmalloc_4k //add by visual 2016.4.7 ; ; ==================================================================== ; kmalloc_4k: ; push ebx ; mov ebx,[esp+4] ; 将C函数调用时传来的参数放到ebx里!!111 ; mov eax, _NR_kmalloc_4k ; int INT_VECTOR_SYS_CALL ; pop ebx ; ret ; ; ==================================================================== ; ; malloc //add by visual 2016.4.7 ; ; ==================================================================== ; malloc: ; push ebx ; mov ebx,[esp+4] ; 将C函数调用时传来的参数放到ebx里!!111 ; mov eax, _NR_malloc ; int INT_VECTOR_SYS_CALL ; pop ebx ; ret ; ; ==================================================================== ; ; malloc_4k //add by visual 2016.4.7 ; ; ==================================================================== ; malloc_4k: ; push ebx ; mov ebx,[esp+4] ; 将C函数调用时传来的参数放到ebx里!!111 ; mov eax, _NR_malloc_4k ; int INT_VECTOR_SYS_CALL ; pop ebx ; ret ; ; ==================================================================== ; ; free //add by visual 2016.4.7 ; ; ==================================================================== ; free: ; push ebx ; mov ebx,[esp+4] ; 将C函数调用时传来的参数放到ebx里!!111 ; mov eax, _NR_free ; int INT_VECTOR_SYS_CALL ; pop ebx ; ret ; ; ==================================================================== ; ; free_4k //add by visual 2016.4.7 ; ; ==================================================================== ; free_4k: ; push ebx ; mov ebx,[esp+4] ; 将C函数调用时传来的参数放到ebx里!!111 ; mov eax, _NR_free_4k ; int INT_VECTOR_SYS_CALL ; pop ebx ; ret ; ==================================================================== ; fork //add by visual 2016.4.8 ; ==================================================================== fork: mov eax, _NR_fork int INT_VECTOR_SYS_CALL ret ; ==================================================================== ; pthread //add by visual 2016.4.11 ; ==================================================================== pthread: push ebx mov ebx,[esp+8] mov eax, _NR_pthread int INT_VECTOR_SYS_CALL pop ebx ret ; ==================================================================== ; udisp_int //add by visual 2016.5.16 ; ==================================================================== udisp_int: push ebx mov ebx,[esp+8] mov eax, _NR_udisp_int int INT_VECTOR_SYS_CALL pop ebx ret ; ==================================================================== ; udisp_str //add by visual 2016.5.16 ; ==================================================================== udisp_str: push ebx mov ebx,[esp+8] mov eax, _NR_udisp_str int INT_VECTOR_SYS_CALL pop ebx ret ; ==================================================================== ; exec //add by visual 2016.5.16 ; ==================================================================== exec: push ebx mov ebx,[esp+8] mov eax, _NR_exec int INT_VECTOR_SYS_CALL pop ebx ret ; ==================================================================== ; yield //added by xw ; ==================================================================== yield: mov eax, _NR_yield int INT_VECTOR_SYS_CALL ret ; ==================================================================== ; sleep //added by xw ; ==================================================================== sleep: push ebx mov ebx,[esp+8] mov eax, _NR_sleep int INT_VECTOR_SYS_CALL pop ebx ret ; ; ==================================================================== ; ; print_E //added by xw ; ; ==================================================================== ; print_E: ; push ebx ; mov ebx,[esp+4] ; mov eax, _NR_print_E ; int INT_VECTOR_SYS_CALL ; pop ebx ; ret ; ; ==================================================================== ; ; print_F //added by xw ; ; ==================================================================== ; print_F: ; push ebx ; mov ebx,[esp+4] ; mov eax, _NR_print_F ; int INT_VECTOR_SYS_CALL ; pop ebx ; ret ; ==================================================================== ; open //added by xw, 18/6/18 ; ==================================================================== ; open has more than one parameter, to pass them, we save the esp to ebx, ; and ebx will be passed into kernel as usual. In kernel, we use the saved ; esp in user space to get the number of parameters and the values of them. open: push ebx mov ebx, esp mov eax, _NR_open int INT_VECTOR_SYS_CALL pop ebx ret ; ==================================================================== ; close //added by xw, 18/6/18 ; ==================================================================== ; close has only one parameter, but we can still use this method. close: push ebx mov ebx, esp mov eax, _NR_close int INT_VECTOR_SYS_CALL pop ebx ret ; ==================================================================== ; read //added by xw, 18/6/18 ; ==================================================================== read: push ebx mov ebx, esp mov eax, _NR_read int INT_VECTOR_SYS_CALL pop ebx ret ; ==================================================================== ; write //added by xw, 18/6/18 ; ==================================================================== write: push ebx mov ebx, esp mov eax, _NR_write int INT_VECTOR_SYS_CALL pop ebx ret ; ==================================================================== ; lseek //added by xw, 18/6/18 ; ==================================================================== lseek: push ebx mov ebx, esp mov eax, _NR_lseek int INT_VECTOR_SYS_CALL pop ebx ret ; ==================================================================== ; unlink //added by xw, 18/6/18 ; ==================================================================== unlink: push ebx mov ebx, esp mov eax, _NR_unlink int INT_VECTOR_SYS_CALL pop ebx ret ;和FAT32有关的系统调用 create: push ebx mov ebx, esp mov eax, _NR_create int INT_VECTOR_SYS_CALL pop ebx ret delete: push ebx mov ebx, esp mov eax, _NR_delete int INT_VECTOR_SYS_CALL pop ebx ret opendir: push ebx mov ebx, esp mov eax, _NR_opendir int INT_VECTOR_SYS_CALL pop ebx ret createdir: push ebx mov ebx, esp mov eax, _NR_createdir int INT_VECTOR_SYS_CALL pop ebx ret deletedir: push ebx mov ebx, esp mov eax, _NR_deletedir int INT_VECTOR_SYS_CALL pop ebx ret