From ed285c9fc665e262ed21c7bf5734acb2b7a532db Mon Sep 17 00:00:00 2001 From: hachem Date: Fri, 25 Sep 2026 11:31:59 +0200 Subject: feat: load + run native ELF binaries --- user/program.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 user/program.c (limited to 'user/program.c') diff --git a/user/program.c b/user/program.c new file mode 100644 index 0000000..8e26128 --- /dev/null +++ b/user/program.c @@ -0,0 +1,22 @@ +static long sys_write(const char* buffer, unsigned long buffer_size) +{ + long ret; + __asm__ volatile("int $0x80" : "=a"(ret) : "a"(1L), "D"(buffer), "S"(buffer_size) : "memory"); + return ret; +} +static void sys_exit(long code) +{ + __asm__ volatile("int $0x80" : : "a"(0L), "D"(code) : "memory"); + for (;;); +} + +void _start(void) +{ + const char* message = "wassup shawty\n"; + unsigned long message_length = 0; + while (message[message_length]) + message_length++; + + sys_write(message, message_length); + sys_exit(0); +} -- cgit v1.3