8bb18fdc56
This is no longer needed as the Kernel can stand on its own legs now and there won't be any conflict with host system data types.
225 lines
8.1 KiB
C++
225 lines
8.1 KiB
C++
#include "i386.h"
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#include "Process.h"
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#include "Syscall.h"
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#include "Console.h"
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#include "Scheduler.h"
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extern "C" void syscall_entry(RegisterDump&);
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extern "C" void syscall_ISR();
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extern volatile RegisterDump* syscallRegDump;
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asm(
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".globl syscall_ISR \n"
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"syscall_ISR:\n"
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" pusha\n"
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" pushw %ds\n"
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" pushw %es\n"
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" pushw %fs\n"
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" pushw %gs\n"
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" pushw %ss\n"
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" pushw %ss\n"
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" pushw %ss\n"
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" pushw %ss\n"
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" pushw %ss\n"
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" popw %ds\n"
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" popw %es\n"
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" popw %fs\n"
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" popw %gs\n"
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" mov %esp, %eax\n"
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" call syscall_entry\n"
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" popw %gs\n"
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" popw %gs\n"
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" popw %fs\n"
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" popw %es\n"
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" popw %ds\n"
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" popa\n"
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" iret\n"
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);
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namespace Syscall {
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void initialize()
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{
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register_user_callable_interrupt_handler(0x80, syscall_ISR);
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kprintf("syscall: int 0x80 handler installed\n");
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}
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int sync()
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{
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VFS::the().sync();
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return 0;
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}
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static dword handle(RegisterDump& regs, dword function, dword arg1, dword arg2, dword arg3)
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{
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ASSERT_INTERRUPTS_ENABLED();
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switch (function) {
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case Syscall::SC_yield:
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Scheduler::yield();
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break;
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case Syscall::SC_putch:
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Console::the().put_char(arg1 & 0xff);
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break;
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case Syscall::SC_sleep:
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return current->sys$sleep((unsigned)arg1);
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case Syscall::SC_gettimeofday:
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return current->sys$gettimeofday((timeval*)arg1);
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case Syscall::SC_get_dir_entries:
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return current->sys$get_dir_entries((int)arg1, (void*)arg2, (size_t)arg3);
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case Syscall::SC_lstat:
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return current->sys$lstat((const char*)arg1, (stat*)arg2);
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case Syscall::SC_stat:
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return current->sys$stat((const char*)arg1, (stat*)arg2);
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case Syscall::SC_getcwd:
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return current->sys$getcwd((char*)arg1, (size_t)arg2);
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case Syscall::SC_open:
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return current->sys$open((const char*)arg1, (int)arg2, (mode_t)arg3);
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case Syscall::SC_write:
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return current->sys$write((int)arg1, (const void*)arg2, (size_t)arg3);
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case Syscall::SC_close:
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//kprintf("syscall: close(%d)\n", arg1);
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return current->sys$close((int)arg1);
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case Syscall::SC_read:
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//kprintf("syscall: read(%d, %p, %u)\n", arg1, arg2, arg3);
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return current->sys$read((int)arg1, (void*)arg2, (size_t)arg3);
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case Syscall::SC_lseek:
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return current->sys$lseek((int)arg1, (off_t)arg2, (int)arg3);
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case Syscall::SC_kill:
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return current->sys$kill((pid_t)arg1, (int)arg2);
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case Syscall::SC_getuid:
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return current->sys$getuid();
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case Syscall::SC_getgid:
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return current->sys$getgid();
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case Syscall::SC_getpid:
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return current->sys$getpid();
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case Syscall::SC_getppid:
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return current->sys$getppid();
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case Syscall::SC_waitpid:
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return current->sys$waitpid((pid_t)arg1, (int*)arg2, (int)arg3);
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case Syscall::SC_mmap:
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return (dword)current->sys$mmap((const SC_mmap_params*)arg1);
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case Syscall::SC_select:
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return current->sys$select((const SC_select_params*)arg1);
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case Syscall::SC_munmap:
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return current->sys$munmap((void*)arg1, (size_t)arg2);
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case Syscall::SC_gethostname:
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return current->sys$gethostname((char*)arg1, (size_t)arg2);
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case Syscall::SC_exit:
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cli();
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current->sys$exit((int)arg1);
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ASSERT_NOT_REACHED();
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return 0;
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case Syscall::SC_get_arguments:
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return current->sys$get_arguments((int*)arg1, (char***)arg2);
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case Syscall::SC_get_environment:
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return current->sys$get_environment((char***)arg1);
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case Syscall::SC_chdir:
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return current->sys$chdir((const char*)arg1);
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case Syscall::SC_uname:
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return current->sys$uname((utsname*)arg1);
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case Syscall::SC_set_mmap_name:
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return current->sys$set_mmap_name((void*)arg1, (size_t)arg2, (const char*)arg3);
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case Syscall::SC_readlink:
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return current->sys$readlink((const char*)arg1, (char*)arg2, (size_t)arg3);
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case Syscall::SC_ttyname_r:
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return current->sys$ttyname_r((int)arg1, (char*)arg2, (size_t)arg3);
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case Syscall::SC_ptsname_r:
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return current->sys$ptsname_r((int)arg1, (char*)arg2, (size_t)arg3);
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case Syscall::SC_setsid:
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return current->sys$setsid();
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case Syscall::SC_getsid:
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return current->sys$getsid((pid_t)arg1);
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case Syscall::SC_setpgid:
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return current->sys$setpgid((pid_t)arg1, (pid_t)arg2);
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case Syscall::SC_getpgid:
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return current->sys$getpgid((pid_t)arg1);
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case Syscall::SC_getpgrp:
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return current->sys$getpgrp();
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case Syscall::SC_fork:
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return current->sys$fork(regs);
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case Syscall::SC_execve:
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return current->sys$execve((const char*)arg1, (const char**)arg2, (const char**)arg3);
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case Syscall::SC_geteuid:
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return current->sys$geteuid();
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case Syscall::SC_getegid:
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return current->sys$getegid();
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case Syscall::SC_isatty:
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return current->sys$isatty((int)arg1);
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case Syscall::SC_getdtablesize:
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return current->sys$getdtablesize();
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case Syscall::SC_dup:
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return current->sys$dup((int)arg1);
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case Syscall::SC_dup2:
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return current->sys$dup2((int)arg1, (int)arg2);
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case Syscall::SC_sigaction:
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return current->sys$sigaction((int)arg1, (const sigaction*)arg2, (sigaction*)arg3);
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case Syscall::SC_umask:
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return current->sys$umask((mode_t)arg1);
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case Syscall::SC_getgroups:
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return current->sys$getgroups((int)arg1, (gid_t*)arg2);
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case Syscall::SC_setgroups:
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return current->sys$setgroups((size_t)arg1, (const gid_t*)arg2);
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case Syscall::SC_sigreturn:
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current->sys$sigreturn();
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ASSERT_NOT_REACHED();
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return 0;
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case Syscall::SC_sigprocmask:
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return current->sys$sigprocmask((int)arg1, (const sigset_t*)arg2, (sigset_t*)arg3);
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case Syscall::SC_pipe:
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return current->sys$pipe((int*)arg1);
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case Syscall::SC_killpg:
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return current->sys$killpg((int)arg1, (int)arg2);
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case Syscall::SC_setuid:
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return current->sys$setuid((uid_t)arg1);
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case Syscall::SC_setgid:
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return current->sys$setgid((gid_t)arg1);
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case Syscall::SC_alarm:
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return current->sys$alarm((unsigned)arg1);
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case Syscall::SC_access:
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return current->sys$access((const char*)arg1, (int)arg2);
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case Syscall::SC_fcntl:
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return current->sys$fcntl((int)arg1, (int)arg2, (dword)arg3);
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case Syscall::SC_ioctl:
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return current->sys$ioctl((int)arg1, (unsigned)arg2, (unsigned)arg3);
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case Syscall::SC_fstat:
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return current->sys$fstat((int)arg1, (stat*)arg2);
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case Syscall::SC_mkdir:
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return current->sys$mkdir((const char*)arg1, (mode_t)arg2);
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case Syscall::SC_times:
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return current->sys$times((tms*)arg1);
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case Syscall::SC_utime:
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return current->sys$utime((const char*)arg1, (const utimbuf*)arg2);
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case Syscall::SC_sync:
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return sync();
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case Syscall::SC_unlink:
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return current->sys$unlink((const char*)arg1);
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case Syscall::SC_gui_create_window:
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return current->gui$create_window((const GUI_WindowParameters*)arg1);
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case Syscall::SC_gui_destroy_window:
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return current->gui$destroy_window((int)arg1);
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case Syscall::SC_gui_get_window_backing_store:
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return current->gui$get_window_backing_store((int)arg1, (GUI_WindowBackingStoreInfo*)arg2);
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case Syscall::SC_gui_invalidate_window:
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return current->gui$invalidate_window((int)arg1, (const GUI_Rect*)arg2);
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case Syscall::SC_gui_set_window_parameters:
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return current->gui$set_window_parameters((int)arg1, (const GUI_WindowParameters*)arg2);
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case Syscall::SC_gui_get_window_parameters:
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return current->gui$get_window_parameters((int)arg1, (GUI_WindowParameters*)arg2);
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default:
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kprintf("<%u> int0x80: Unknown function %u requested {%x, %x, %x}\n", current->pid(), function, arg1, arg2, arg3);
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break;
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}
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return 0;
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}
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}
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void syscall_entry(RegisterDump& regs)
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{
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dword function = regs.eax;
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dword arg1 = regs.edx;
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dword arg2 = regs.ecx;
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dword arg3 = regs.ebx;
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regs.eax = Syscall::handle(regs, function, arg1, arg2, arg3);
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}
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