view src/impl/SyscallDispatchImpl.cbc @ 381:874577d7505f

fix parse for interface
author anatofuz <anatofuz@cr.ie.u-ryukyu.ac.jp>
date Mon, 20 Jul 2020 15:00:11 +0900 (2020-07-20)
parents 6fc38a3f38f9
children
line wrap: on
line source
#include "types.h"
#include "defs.h"
#include "param.h"
#include "memlayout.h"
#include "mmu.h"
#include "proc.h"
#include "arm.h"
#include "syscall.h"

#include "../../kernel.h"
#interface "SyscallDispatch.h"
#interface "KernelRet.h"

extern int sys_chdir(void);
extern int sys_close(void);
extern int sys_dup(void);
extern int sys_exec(void);
extern int sys_exit(void);
extern int sys_fork(void);
extern int sys_fstat(void);
extern int sys_getpid(void);
extern int sys_kill(void);
extern int sys_link(void);
extern int sys_mkdir(void);
extern int sys_mknod(void);
extern int sys_open(void);
extern int sys_pipe(void);
extern int sys_read(void);
extern int sys_sbrk(void);
extern int sys_sleep(void);
extern int sys_unlink(void);
extern int sys_wait(void);
extern int sys_write(void);
extern int sys_uptime(void);

extern __code cbc_read(__code(*)(int));


static int (*syscalls[])(void) = {
        [SYS_fork]    =sys_fork,
        [SYS_exit]    =sys_exit,
        [SYS_wait]    =sys_wait,
        [SYS_pipe]    =sys_pipe,
        [SYS_read]    =sys_read,
        [SYS_kill]    =sys_kill,
        [SYS_exec]    =sys_exec,
        [SYS_fstat]   =sys_fstat,
        [SYS_chdir]   =sys_chdir,
        [SYS_dup]     =sys_dup,
        [SYS_getpid]  =sys_getpid,
        [SYS_sbrk]    =sys_sbrk,
        [SYS_sleep]   =sys_sleep,
        [SYS_uptime]  =sys_uptime,
        [SYS_open]    =sys_open,
        [SYS_write]   =sys_write,
        [SYS_mknod]   =sys_mknod,
        [SYS_unlink]  =sys_unlink,
        [SYS_link]    =sys_link,
        [SYS_mkdir]   =sys_mkdir,
        [SYS_close]   =sys_close,
};


static __code (*cbccodes[])(__code (*)(int)) = {
       [SYS_cbc_read]  = cbc_read,
};



// ----
// typedef struct SyscallDispatchImpl <Type, Isa> impl SyscallDispatch {
//   __code next(....);
// } SyscallDispatchImpl;
// ----

SyscallDispatch* createSyscallDispatchImpl(struct Context* cbc_context) {
    struct SyscallDispatch* syscall_dispatch  = new SyscallDispatch();
    struct SyscallDispatchImpl* syscall_dispatch_impl = new SyscallDispatchImpl();
    syscall_dispatch->syscall_dispatch = (union Data*)syscall_dispatch_impl;
    syscall_dispatch->dispatch = C_dispatchSyscallDispatchImpl;
    return syscall_dispatch;
}

__code dispatchSyscallDispatchImpl(struct SyscallDispatchImpl* syscall_dispatch, __code next(...)) {
    KernelContext* kcontext = kernel_context;
    kcontext->now_proc = proc;
    proc->cbc_context.proc = proc;

    int num = proc->tf->r0;

    if (num == 5)
        num = 22;

    struct KernelRet* kernelRet = createKernelRetImpl(cbc_context);

    if((num >= NELEM(syscalls)) && (num <= NELEM(cbccodes)) && cbccodes[num]) {
        proc->cbc_arg.cbc_console_arg.num = num;
        __code *syscalls = kcontext->syscalls;

        goto (cbccodes[num])(cbc_ret);
        //goto meta(&proc->cbc_context, cbccodes[num]);
    }


    if((num > 0) && (num < NELEM(syscalls)) && syscalls[num]) {
        int ret = syscalls[num]();

        // in ARM, parameters to main (argc, argv) are passed in r0 and r1
        // do not set the return value if it is SYS_exec (the user program
        // anyway does not expect us to return anything).

        goto kernelRet->cbc_return(ret);

    }

    cprintf("%d %s: unknown sys call %d\n", proc->pid, proc->name, num);
    goto kernelRet->cbc_return(-1);
}