program loading, others

big kernel additions: paging, elf loading, separate kernel and user page allocation
it now properly loads and runs sd0:bin/init.elf
still need to determine which disk was booted from, and start the init on that disk

7 files changed, 71 insertions, 0 deletions

diff --git a/src/user/include/knob/block.h b/src/user/include/knob/block.h
new file mode 100644
index 0000000..53b3deb
--- /dev/null
+++ b/src/user/include/knob/block.h
@@ -0,0 +1,8 @@
+#ifndef KNOB_BLOCK_H
+#define KNOB_BLOCK_H
+
+#include <stdint.h>
+
+void blockcpy(void *to, const void *from, uint32_t count);
+
+#endif
\ No newline at end of file
diff --git a/src/user/include/knob/env.h b/src/user/include/knob/env.h
new file mode 100644
index 0000000..6d750ae
--- /dev/null
+++ b/src/user/include/knob/env.h
@@ -0,0 +1,9 @@
+#ifndef KNOB_ENV_H
+#define KNOB_ENV_H
+
+#include <stdint.h>
+
+//not implemented yet
+extern uint32_t current_drive;
+
+#endif
\ No newline at end of file
diff --git a/src/user/include/knob/file.h b/src/user/include/knob/file.h
new file mode 100644
index 0000000..6068077
--- /dev/null
+++ b/src/user/include/knob/file.h
@@ -0,0 +1,17 @@
+#ifndef KNOB_FILE_H
+#define KNOB_FILE_H
+
+#include <stdint.h>
+
+struct file;
+
+struct file *open_file(const char *path);
+void close_file(struct file *f);
+
+uint32_t read_from_file(struct file *f, uint32_t max, void *buf);
+uint32_t seek_file_to(struct file *f, uint32_t to);
+int32_t seek_file_by(struct file *f, int32_t by);
+
+uint32_t file_size(struct file *f) __attribute__ ((pure));
+
+#endif
\ No newline at end of file
diff --git a/src/user/include/knob/format.h b/src/user/include/knob/format.h
new file mode 100644
index 0000000..16d3d83
--- /dev/null
+++ b/src/user/include/knob/format.h
@@ -0,0 +1,9 @@
+#ifndef KNOB_FORMAT_H
+#define KNOB_FORMAT_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+bool try_sntoi(const char *s, uint32_t n, uint32_t *out);
+
+#endif
\ No newline at end of file
diff --git a/src/user/include/knob/heap.h b/src/user/include/knob/heap.h
new file mode 100644
index 0000000..32dc44c
--- /dev/null
+++ b/src/user/include/knob/heap.h
@@ -0,0 +1,9 @@
+#ifndef KNOB_HEAP_H
+#define KNOB_HEAP_H
+
+#include <stdint.h>
+
+void *get_block(uint32_t bytes) __attribute__ ((malloc));
+void free_block(void *block);
+
+#endif
\ No newline at end of file
diff --git a/src/user/include/knob/quit.h b/src/user/include/knob/quit.h
new file mode 100644
index 0000000..7b10d09
--- /dev/null
+++ b/src/user/include/knob/quit.h
@@ -0,0 +1,7 @@
+#ifndef KNOB_QUIT_H
+#define KNOB_QUIT_H
+
+void on_quit(void (*run_f)());
+void quit() __attribute__ ((noreturn));
+
+#endif
\ No newline at end of file
diff --git a/src/user/include/knob/user.h b/src/user/include/knob/user.h
new file mode 100644
index 0000000..c4ec7db
--- /dev/null
+++ b/src/user/include/knob/user.h
@@ -0,0 +1,12 @@
+#ifndef KNOB_USER_H
+#define KNOB_USER_H
+
+#include <stdint.h>
+
+void tell_user_sz(const char *sz);
+void tell_user_n(uint32_t n);
+
+//return value and max_length both include null terminator
+uint32_t ask_user_line_sz(char *sz, uint32_t max_length);
+
+#endif
\ No newline at end of file