452 lines
9.2 KiB
C
452 lines
9.2 KiB
C
/*
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* File : shell.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://openlab.rt-thread.com/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2006-04-30 Bernard the first verion for FinSH
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* 2006-05-08 Bernard change finsh thread stack to 2048
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* 2006-06-03 Bernard add support for skyeye
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* 2006-09-24 Bernard remove the code related with hardware
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*/
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#include <rtthread.h>
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#include <rthw.h>
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#include "finsh.h"
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/*
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* Add by caoxl 2009-10-14
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*
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*/
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#ifdef QEMU_CAOXL
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#define memcpy(a,b,c) rt_memcpy(a,b,c)
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extern char rt_serial_getc(void);
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#endif
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#define FINSH_USING_HISTORY
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#if defined(__CC_ARM) /* ARMCC compiler */
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#ifdef FINSH_USING_SYMTAB
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extern int FSymTab$$Base;
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extern int FSymTab$$Limit;
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extern int VSymTab$$Base;
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extern int VSymTab$$Limit;
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#endif
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#elif defined(__ICCARM__) /* for IAR compiler */
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#ifdef FINSH_USING_SYMTAB
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#pragma section="FSymTab"
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#pragma section="VSymTab"
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#endif
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#elif defined(__GNUC__)
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#ifdef FINSH_USING_SYMTAB
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extern int __fsymtab_start;
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extern int __fsymtab_end;
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extern int __vsymtab_start;
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extern int __vsymtab_end;
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#endif
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#endif
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/* finsh thread */
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struct rt_thread finsh_thread;
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char finsh_thread_stack[2048];
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struct rt_semaphore uart_sem;
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#ifdef RT_USING_DEVICE
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rt_device_t finsh_device;
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#endif
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#ifdef FINSH_USING_HISTORY
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enum input_stat
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{
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WAIT_NORMAL,
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WAIT_SPEC_KEY,
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WAIT_FUNC_KEY,
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};
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#ifndef FINSH_HISTORY_LINES
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#define FINSH_HISTORY_LINES 5
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#endif
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#ifndef FINSH_CMD_SIZE
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#define FINSH_CMD_SIZE 80
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#endif
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char finsh_cmd_history[FINSH_HISTORY_LINES][FINSH_CMD_SIZE];
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rt_uint16_t finsh_history_count = 0;
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#endif
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#if !defined (RT_USING_NEWLIB) && !defined (RT_USING_MINILIBC)
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void *memccpy(void *dst, const void *src, int c, size_t count)
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{
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char *a = dst;
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const char *b = src;
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while (count--)
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{
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*a++ = *b;
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if (*b==c)
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{
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return (void *)a;
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}
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b++;
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}
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return 0;
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}
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int strcmp (const char *s1, const char *s2)
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{
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while (*s1 && *s1 == *s2) s1++, s2++;
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return (*s1 - *s2);
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}
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#ifdef RT_USING_HEAP
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char *strdup(const char *s)
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{
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size_t len = strlen(s) + 1;
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char *tmp = (char *)rt_malloc(len);
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if(!tmp) return NULL;
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rt_memcpy(tmp, s, len);
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return tmp;
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}
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#endif
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int isalpha( int ch )
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{
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return (unsigned int)((ch | 0x20) - 'a') < 26u;
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}
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int atoi(const char* s)
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{
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long int v=0;
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int sign=1;
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while ( *s == ' ' || (unsigned int)(*s - 9) < 5u) s++;
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switch (*s)
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{
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case '-': sign=-1;
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case '+': ++s;
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}
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while ((unsigned int) (*s - '0') < 10u)
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{
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v=v*10+*s-'0'; ++s;
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}
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return sign==-1?-v:v;
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}
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int isprint(unsigned char ch)
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{
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return (unsigned int)(ch - ' ') < 127u - ' ';
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}
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#endif
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#ifdef RT_USING_DEVICE
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static rt_err_t finsh_rx_ind(rt_device_t dev, rt_size_t size)
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{
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/* release semaphore to let finsh thread rx data */
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rt_sem_release(&uart_sem);
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return RT_EOK;
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}
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void finsh_set_device(char* device_name)
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{
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rt_device_t dev = RT_NULL;
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dev = rt_device_find(device_name);
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if (dev != RT_NULL && rt_device_open(dev, RT_DEVICE_OFLAG_RDWR) == RT_EOK)
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{
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if (finsh_device != RT_NULL)
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{
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/* close old finsh device */
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rt_device_close(finsh_device);
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}
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finsh_device = dev;
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rt_device_set_rx_indicate(dev, finsh_rx_ind);
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}
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else
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{
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rt_kprintf("finsh: can not find device:%s\n", device_name);
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}
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}
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#else
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void finsh_notify()
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{
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rt_sem_release(&uart_sem);
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}
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#endif
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void finsh_auto_complete(char* prefix)
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{
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extern void list_prefix(char* prefix);
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rt_kprintf("\n");
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list_prefix(prefix);
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rt_kprintf("finsh>>%s", prefix);
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}
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void finsh_thread_entry(void* parameter)
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{
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struct finsh_parser parser;
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char line[256];
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int pos ;
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#ifdef FINSH_USING_HISTORY
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enum input_stat stat;
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unsigned short current_history, use_history;
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#endif
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stat = WAIT_NORMAL;
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current_history = 0;
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use_history = 0;
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finsh_init(&parser);
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while (1)
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{
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rt_kprintf("finsh>>");
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memset(line, 0, sizeof(line));
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pos = 0;
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while (1)
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{
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if (rt_sem_take(&uart_sem, -1) == RT_EOK)
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{
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/* read one character from serial */
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char ch;
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#ifndef RT_USING_DEVICE
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ch = rt_serial_getc();
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if (ch != 0)
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#else
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rt_err_t rx_result;
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rx_result = rt_device_read(finsh_device, 0, &ch, 1);
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if (ch != 0 && rx_result == 1)
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#endif
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{
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#ifdef FINSH_USING_HISTORY
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/*
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* handle up and down key
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* up key : 0x1b 0x5b 0x41
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* down key: 0x1b 0x5b 0x42
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*/
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if (ch == 0x1b)
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{
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stat = WAIT_SPEC_KEY;
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continue;
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}
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if ((stat == WAIT_SPEC_KEY) && (ch == 0x5b))
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{
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if (ch == 0x5b)
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{
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stat = WAIT_FUNC_KEY;
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continue;
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}
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stat = WAIT_NORMAL;
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}
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if (stat == WAIT_FUNC_KEY)
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{
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stat = WAIT_NORMAL;
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if (ch == 0x41) /* up key */
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{
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/* prev history */
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if (current_history > 0)current_history --;
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else
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{
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current_history = 0;
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continue;
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}
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/* copy the history command */
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memcpy(line, &finsh_cmd_history[current_history][0],
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FINSH_CMD_SIZE);
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pos = strlen(line);
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use_history = 1;
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}
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else if (ch == 0x42) /* down key */
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{
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/* next history */
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if (current_history < finsh_history_count - 1)
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current_history ++;
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else
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{
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current_history = finsh_history_count - 1;
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continue;
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}
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memcpy(line, &finsh_cmd_history[current_history][0],
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FINSH_CMD_SIZE);
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pos = strlen(line);
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use_history = 1;
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}
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if (use_history)
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{
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rt_kprintf("\033[2K\r");
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rt_kprintf("finsh>>%s", line);
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continue;
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}
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}
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#endif
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/*
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* handle tab key
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*/
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if (ch == '\t')
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{
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/* auto complete */
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finsh_auto_complete(&line[0]);
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/* re-calculate position */
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pos = strlen(line);
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continue;
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}
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/*
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* handle backspace key
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*/
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if (ch == 0x7f || ch == 0x08)
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{
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if (pos != 0)rt_kprintf("%c", ch);
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line[pos--] = 0;
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if (pos < 0) pos = 0;
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continue;
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}
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line[pos] = ch;
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rt_kprintf("%c", line[pos]);
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/* if it's the end of line, break */
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if (line[pos] == 0xd || line[pos] == 0xa)
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{
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/* change to ';' and break */
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line[pos] = ';';
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break;
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}
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else use_history = 0; /* not "\n", it's a new command */
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pos ++;
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}
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}
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}
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if (pos == 0)
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{
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rt_kprintf("\n");
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continue;
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}
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#ifdef FINSH_USING_HISTORY
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if (use_history == 0)
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{
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/* push history */
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if (finsh_history_count >= FINSH_HISTORY_LINES)
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{
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/* move history */
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int index;
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for (index = 0; index < FINSH_HISTORY_LINES - 1; index ++)
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{
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memcpy(&finsh_cmd_history[index][0],
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&finsh_cmd_history[index + 1][0], FINSH_CMD_SIZE);
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}
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memset(&finsh_cmd_history[index][0], 0, FINSH_CMD_SIZE);
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memcpy(&finsh_cmd_history[index][0], line, pos);
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/* it's the maximum history */
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finsh_history_count = FINSH_HISTORY_LINES;
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}
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else
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{
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memset(&finsh_cmd_history[finsh_history_count][0], 0, FINSH_CMD_SIZE);
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memcpy(&finsh_cmd_history[finsh_history_count][0], line, pos);
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/* increase count and set current history position */
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finsh_history_count ++;
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}
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}
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current_history = finsh_history_count;
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#endif
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rt_kprintf("\n");
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finsh_parser_run(&parser, (unsigned char*)&line[0]);
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/* compile node root */
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if (finsh_errno() == 0)
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{
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finsh_compiler_run(parser.root);
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}
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else
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{
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rt_kprintf("%s\n", finsh_error_string(finsh_errno()));
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}
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/* run virtual machine */
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if (finsh_errno() == 0)
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{
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finsh_vm_run();
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if (isprint((unsigned char)finsh_stack_bottom()))
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{
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rt_kprintf("\t'%c', %d, 0x%08x\n",
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(unsigned char)finsh_stack_bottom(),
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(unsigned int)finsh_stack_bottom(),
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(unsigned int)finsh_stack_bottom());
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}
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else
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{
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rt_kprintf("\t%d, 0x%04x\n",
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(unsigned int)finsh_stack_bottom(),
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(unsigned int)finsh_stack_bottom());
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}
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}
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finsh_flush(&parser);
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}
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}
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void finsh_system_function_init(void* begin, void* end)
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{
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_syscall_table_begin = (struct finsh_syscall*) begin;
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_syscall_table_end = (struct finsh_syscall*) end;
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}
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void finsh_system_var_init(void* begin, void* end)
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{
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_sysvar_table_begin = (struct finsh_sysvar*) begin;
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_sysvar_table_end = (struct finsh_sysvar*) end;
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}
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/* init finsh */
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void finsh_system_init()
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{
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rt_sem_init(&uart_sem, "uart", 0, 0);
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#ifdef FINSH_USING_SYMTAB
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#ifdef __CC_ARM /* ARM C Compiler */
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finsh_system_function_init(&FSymTab$$Base, &FSymTab$$Limit);
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finsh_system_var_init(&VSymTab$$Base, &VSymTab$$Limit);
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#elif defined (__ICCARM__) /* for IAR Compiler */
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finsh_system_function_init(__section_begin("FSymTab"),
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__section_end("FSymTab"));
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finsh_system_var_init(__section_begin("VSymTab"),
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__section_end("VSymTab"));
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#elif defined (__GNUC__) /* GNU GCC Compiler */
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finsh_system_function_init(&__fsymtab_start, &__fsymtab_end);
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finsh_system_var_init(&__vsymtab_start, &__vsymtab_start);
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#endif
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#endif
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rt_thread_init(&finsh_thread,
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"tshell",
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finsh_thread_entry, RT_NULL,
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&finsh_thread_stack[0], sizeof(finsh_thread_stack),
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20, 100);
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rt_thread_startup(&finsh_thread);
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}
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