From 68915f46e66ed65ce2d32009fdfa2f5dca116842 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Tue, 10 Dec 2019 21:47:41 +0100
Subject: Some syscalls and userspace stuff

sorry for the worse-getting commit messages...
---
 src/kernel/syscall/actions/sys_paging_alloc.c | 10 ++++++++++
 src/kernel/syscall/actions/sys_paging_free.c  |  8 ++++++++
 src/kernel/syscall/actions/sys_read.c         |  8 ++++++--
 src/kernel/syscall/actions/sys_write.c        |  8 +++-----
 4 files changed, 27 insertions(+), 7 deletions(-)
 create mode 100644 src/kernel/syscall/actions/sys_paging_alloc.c
 create mode 100644 src/kernel/syscall/actions/sys_paging_free.c

(limited to 'src/kernel/syscall/actions')

diff --git a/src/kernel/syscall/actions/sys_paging_alloc.c b/src/kernel/syscall/actions/sys_paging_alloc.c
new file mode 100644
index 0000000..fb4e415
--- /dev/null
+++ b/src/kernel/syscall/actions/sys_paging_alloc.c
@@ -0,0 +1,10 @@
+#include <stdint.h>
+#include <kernel/paging/paging.h>
+#include <kernel/io/io.h>
+
+uint32_t sys_paging_alloc(uint32_t count)
+{
+    uint32_t ptr = paging_alloc_pages((uint32_t) count);
+    paging_set_user(ptr, count);
+    return ptr;
+}
\ No newline at end of file
diff --git a/src/kernel/syscall/actions/sys_paging_free.c b/src/kernel/syscall/actions/sys_paging_free.c
new file mode 100644
index 0000000..cdf7bb1
--- /dev/null
+++ b/src/kernel/syscall/actions/sys_paging_free.c
@@ -0,0 +1,8 @@
+#include <stdint.h>
+#include <kernel/paging/paging.h>
+
+uint32_t sys_paging_free(uint32_t virt, uint32_t count)
+{
+    paging_set_free(virt, count);
+    return count;
+}
\ No newline at end of file
diff --git a/src/kernel/syscall/actions/sys_read.c b/src/kernel/syscall/actions/sys_read.c
index f04f3ef..02960f6 100644
--- a/src/kernel/syscall/actions/sys_read.c
+++ b/src/kernel/syscall/actions/sys_read.c
@@ -3,6 +3,7 @@
 #include <kernel/input/input.h>
 #include <kernel/lib/lib.h>
 #include <kernel/lib/string.h>
+#include <kernel/io/io.h>
 
 uint32_t sys_read(char *buf)
 {
@@ -15,7 +16,10 @@ uint32_t sys_read(char *buf)
     return strlen(buf);
 }
 
-uint32_t sys_readc()
+uint32_t sys_readc(char *ch)
 {
-    return getch();
+    char buf = getch();
+    ch = &buf;
+    serial_put(*ch);
+    return (uint32_t) ch;
 }
\ No newline at end of file
diff --git a/src/kernel/syscall/actions/sys_write.c b/src/kernel/syscall/actions/sys_write.c
index 554ac5f..8531e85 100644
--- a/src/kernel/syscall/actions/sys_write.c
+++ b/src/kernel/syscall/actions/sys_write.c
@@ -9,12 +9,10 @@ uint32_t sys_write(char *buf)
     return strlen((const char *) buf);
 }
 
-uint32_t sys_writec(char ch)
+uint32_t sys_writec(char *ch)
 {
-    serial_write_hex(ch);
-    serial_write("\n");
-    serial_put(ch);
+    serial_write_hex(*ch);
     serial_write("\n\n");
-    writec(ch);
+    writec((char) *ch);
     return 0;
 }
\ No newline at end of file
-- 
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