From 779b7fc1fe91e5a355b6e15de882d46b26ab2270 Mon Sep 17 00:00:00 2001 From: Jon Santmyer Date: Sat, 5 Sep 2026 20:24:13 -0400 Subject: working syscalls. --- arch/x86_64/sys/serial.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 arch/x86_64/sys/serial.c (limited to 'arch/x86_64/sys/serial.c') diff --git a/arch/x86_64/sys/serial.c b/arch/x86_64/sys/serial.c new file mode 100644 index 0000000..48a14c7 --- /dev/null +++ b/arch/x86_64/sys/serial.c @@ -0,0 +1,41 @@ +#include "jove.h" +#include "lib/printf.h" +#include "syscall.h" +#include "arch/x86_64/hal/serial_com.h" + +static int +s_syscall_serial_write( + jove_owned_obj_t *serial_com, + size_t payload_bytes, + void *payload_data) +{ + if(payload_bytes < sizeof(struct syscall_serial_write)) { + kprintf("syscall_serial_write: message is too small for this syscall!\n"); + return EOOB; + } + struct syscall_serial_write *payload = payload_data; + if(payload_bytes < sizeof(struct syscall_serial_write) + payload->len) { + kprintf("syscall_serial_write: message is to small for payload!\n"); + return EOOB; + } + return serial_com_write(serial_com, payload->data, payload->len); +} + +int +_syscall_handle_serial( + jove_owned_obj_t *pcb_obj, + jove_owned_obj_t *objdir, + jove_owned_obj_t *message_obj, + jove_owned_obj_t *target_obj, + struct syscall_header *header, + size_t bytes_left, + void *payload_data) +{ + switch(header->callid) { + case 0: + return s_syscall_serial_write(target_obj, bytes_left, payload_data); + default: + kprintf("syscall_serial: serial com object does not support syscall %i\n", header->callid); + return EOOB; + } +} -- cgit v1.2.3