working on exposing vga to userspace

rocklibc/include/sys/video.h

@@ -0,0 +1,16 @@
+#ifndef USER_VIDEO_H
+#define USER_VIDEO_H
+
+#include <stdint.h>
+
+#define FBIOGET_INFO  0x1
+
+typedef struct {
+    uint32_t width;
+    uint32_t height;
+    uint32_t pitch;
+    uint32_t bpp;
+    uint32_t fb_size;
+} fb_info_t;
+
+#endif

rocklibc/include/syscall.h

@@ -17,6 +17,8 @@
 #define SYS_DUP2    23
 #define SYS_LSEEK   24
 #define SYS_WAIT    25
+#define SYS_MMAP    26
+#define SYS_IOCTL   27
 
 int open(const char* path);
 int write(int fd, const void *buf, size_t count);
@@ -25,6 +27,8 @@ int close(int fd);
 
 int lseek(int fd, size_t offset, int whence);
 
+void* mmap(int fd);
+
 void exit(int status) __attribute__((noreturn));
 
 void* sbrk(int32_t increment);
@@ -37,4 +41,6 @@ int exec(const char* path);
 int dup2(int src, int dst);
 int waitpid(int pid, int* status);
 
+int ioctl(int fd, uint32_t request, void* arg);
+
 #endif

rocklibc/src/syscall.c

@@ -73,4 +73,12 @@ void* sbrk(int32_t increment) {
 
 int brk(void *addr) {
     return syscall1(SYS_BRK, (uint32_t)addr);
+}
+
+void* mmap(int fd) {
+    return (void*)syscall1(SYS_MMAP, fd);
+}
+
+int ioctl(int fd, uint32_t request, void* arg) {
+    return syscall3(SYS_IOCTL, fd, request, arg);
 }