79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
#include "libc.h"
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#include "stdarg.h"
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#include "tiny.h"
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int func_help()
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{
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printf("\nAvailable Commands:\n");
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printf(" help: this help\n");
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printf(" suicide: userspace self kill\n");
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printf(" syscall5: a syscall with parameters over the stack \n");
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printf(" alloc: test allocation\n");
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printf(" tiny: a tiny C-like interpreter\n");
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return 0;
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}
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int func_suicide()
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{
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printf("User is about to suicide\n");
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int *yolo = 0;
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*yolo = 1;
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return 0;
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}
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char *initialHeap = 0;
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int func_alloc()
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{
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if (initialHeap == 0) {
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initialHeap = brk(0);
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}
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printf("Testing allocation\n");
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int allocSize = 4096 * 2;
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char *currentHeap = brk(0);
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if (currentHeap - initialHeap < allocSize) {
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brk(initialHeap + allocSize);
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}
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int *allocatedData = (int *)initialHeap;
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for (unsigned int i = 0; i < allocSize / sizeof(int); i++) {
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allocatedData[i] = i;
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}
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printf("Success\n");
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return 0;
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}
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int main(int argc, char *argv[])
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{
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(void)argc;
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(void)argv;
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char buf[64];
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printf("Shell starting... type \"help\" for help\n");
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while (1) {
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printf(">");
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if (readline(buf, sizeof(buf)))
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continue;
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if (strcmp(buf, "help") == 0) {
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func_help();
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continue;
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}
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if (strcmp(buf, "suicide") == 0) {
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func_suicide();
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continue;
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}
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if (strcmp(buf, "syscall5") == 0) {
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testSycall5(1, 2, 3, 4, 5);
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continue;
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}
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if (strcmp(buf, "alloc") == 0) {
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func_alloc();
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continue;
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}
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if (strcmp(buf, "tiny") == 0) {
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func_tiny();
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continue;
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}
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}
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return 0;
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}
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