forked from pepper-org/pepperOS
94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
/*
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* @author xamidev <xamidev@riseup.net>
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* @brief PepperOS kernel shell
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* @license GPL-3.0-only
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*/
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#include <io/term/term.h>
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#include <config.h>
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#include <io/kbd/ps2.h>
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#include <string/string.h>
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#include <stdint.h>
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#include <kernel.h>
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#include <time/date.h>
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__attribute__((noinline))
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void smash_it()
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{
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char buf[16]; (void)buf;
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for (size_t i=0; i<256; i++) {
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buf[i] = (char)i;
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}
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}
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/*
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* pedicel_main - Kernel shell main function
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* @arg: argument (optional)
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*
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* This is the entry point for the kernel shell process.
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* It is used to start programs and to test different things
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* on different real hardware easily.
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*
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* Named after the root part of the pepper.
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*/
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void pedicel_main(void* arg)
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{
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printf("Welcome to the kernel shell!\r\nType 'help' for a list of commands.\r\n");
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for (;;) {
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char input_buf[PEDICEL_INPUT_SIZE] = {0};
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printf(PEDICEL_PROMPT);
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keyboard_getline(input_buf, PEDICEL_INPUT_SIZE);
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if (strncmp(input_buf, "help", 4) == 0) {
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printf("\r\nYou are currently running the test kernel shell. This is not\r\n"
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"a fully-fledged shell like you'd find in a complete operating system,\r\n"
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"but rather a toy to play around in the meantime.\r\n\r\n"
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"clear - clear the screen\r\n"
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"panic - trigger a test panic\r\n"
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"syscall - trigger int 0x80\r\n"
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"pf - trigger a page fault\r\n"
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"now - get current date\r\n"
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"smash - smash the stack\r\n");
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continue;
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}
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if (strncmp(input_buf, "", 1) == 0) {
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continue;
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}
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if (strncmp(input_buf, "clear", 5) == 0) {
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printf("\x1b[2J\x1b[H");
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continue;
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}
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if (strncmp(input_buf, "panic", 5) == 0) {
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panic(NULL, "test panic");
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}
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if (strncmp(input_buf, "syscall", 7) == 0) {
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__asm__ volatile("mov $0x00, %rdi");
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__asm__ volatile("int $0x80");
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continue;
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}
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if (strncmp(input_buf, "pf", 2) == 0) {
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volatile uint64_t* fault = (uint64_t*)0xdeadbeef;
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fault[0] = 1;
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}
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if (strncmp(input_buf, "now", 3) == 0) {
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struct date now = date_now();
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printf("Now is %02u:%02u:%02u on %u/%u/%u\r\n", now.hour, now.minute,
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now.second, now.day, now.month, now.year);
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continue;
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}
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if (strncmp(input_buf, "smash", 5) == 0) {
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smash_it();
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continue;
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}
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printf("%s: command not found\r\n", input_buf);
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}
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} |