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UnicronNLandClaude Opus 5.5
4f042f7225
Interpreter + JIT for ARM, Thumb-2, VFPv4 and NEON, ARM EABI syscall translation, signals, threads and self-modifying code. Runs static bionic programs on the Frame. Tests: A64 encoders vs llvm-mc, a differential instruction fuzzer and program tests against qemu-arm. Not shipped; the README lists the steps towards running 32-bit-only APKs. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
/* execve of a 32-bit ARM program (a32run re-executes itself), argv/envp passing, /proc/self/exe, pipes + wait. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/wait.h>
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#include <unistd.h>
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int main(int argc, char **argv)
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{
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if (argc > 1 && !strcmp(argv[1], "child")) {
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printf("child argc %d arg2 %s env %s\n", argc, argc > 2 ? argv[2] : "-", getenv("A32_TEST_VAR"));
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return 7;
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}
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if (argc > 1 && !strcmp(argv[1], "exec-self")) {
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char *args[] = {argv[0], "child", "via-proc-self-exe", NULL};
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char *env[] = {"A32_TEST_VAR=from-exec", NULL};
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execve("/proc/self/exe", args, env);
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perror("execve");
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return 1;
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}
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int p[2];
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pipe(p);
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fflush(stdout);
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pid_t pid = fork();
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if (pid == 0) {
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dup2(p[1], 1);
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close(p[0]);
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char *args[] = {argv[0], "exec-self", NULL};
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execv(argv[0], args);
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_exit(99);
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}
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close(p[1]);
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char buf[256] = {0};
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ssize_t n = read(p[0], buf, sizeof buf - 1);
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int st;
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waitpid(pid, &st, 0);
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printf("read %d bytes: %s", (int)n, buf);
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printf("exit %d\n", WEXITSTATUS(st));
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return 0;
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}
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