From 356894bb6e746cff5c6656fb133d8f3cd83cca70 Mon Sep 17 00:00:00 2001
From: Matthias Kruk <m@m10k.eu>
Date: Mon, 23 Dec 2019 16:32:39 +0900
Subject: [PATCH] Add sys_inb() and sys_outb() syscalls

---
 include/corax/syscall.h |  3 +++
 kernel/core/posixcall.c | 20 ++++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/include/corax/syscall.h b/include/corax/syscall.h
index ca456c2..07b64cd 100644
--- a/include/corax/syscall.h
+++ b/include/corax/syscall.h
@@ -27,6 +27,9 @@
 #define SYS_MMAP       9
 #define SYS_MUNMAP     10
 
+#define SYS_INB        11
+#define SYS_OUTB       12
+
 /* Corax-specific variations of POSIX syscalls */
 #define SYS_EXECFVE    128
 
diff --git a/kernel/core/posixcall.c b/kernel/core/posixcall.c
index 25ff841..3cbb141 100644
--- a/kernel/core/posixcall.c
+++ b/kernel/core/posixcall.c
@@ -394,6 +394,18 @@ int sys_mmap(stack_frame_t *stk)
 	return(ret_val);
 }
 
+int sys_inb(stack_frame_t *stk)
+{
+	stk->eax = io_inb((u16_t)stk->ebx);
+	return(0);
+}
+
+int sys_outb(stack_frame_t *stk)
+{
+	stk->eax = io_outb((u16_t)stk->ebx, (u8_t)stk->ecx);
+	return(0);
+}
+
 int sys_posixcall(stack_frame_t *stk)
 {
 	int ret_val;
@@ -454,6 +466,14 @@ int sys_posixcall(stack_frame_t *stk)
 		ret_val = -ENOSYS;
 		break;
 
+	case SYS_INB:
+		ret_val = sys_inb(stk);
+		break;
+
+	case SYS_OUTB:
+		ret_val = sys_outb(stk);
+		break;
+
 	default:
 		ret_val = -EOPNOTSUPP;
 		break;
-- 
2.47.3