Boot loader structures (WORK IN PROGRESS)

Some Program manager structures, macros and functions (WORK IN PROGRESS)

1 files changed, 100 insertions, 0 deletions

diff --git a/sw/z80/kernel/programs.c b/sw/z80/kernel/programs.c
new file mode 100644
index 0000000..31593d1
--- /dev/null
+++ b/sw/z80/kernel/programs.c
@@ -0,0 +1,100 @@
+#include "progman.h"
+
+#define EMPTY_PROG_INFO 0x0
+
+struct program_info *prog_0 = PROG_0_INFO,
+                    *prog_1 = PROG_1_INFO;
+
+void progman_init() {
+
+    *prog_0 = EMPTY_PROG_INFO;
+    *prog_1 = EMPTY_PROG_INFO;
+
+    // TODO other stuff
+}
+
+int8_t prog_req(struct program_info *info) {
+
+    uint8_t prog;
+
+    if (!prog_0->enabled) {
+
+        prog = PROG_0;
+        *info = *prog_0;
+
+    } else if (!prog_1->enabled) {
+
+        prog = PROG_1;
+        *info = *prog_1;
+
+    } else {
+
+        return PROG_REQ_FULL;
+    }
+
+    return prog;
+}
+
+void prog_0_qcb(void (*callback)(void)) {
+
+    prog_0->quit_cb = callback;
+}
+
+void prog_1_qcb(void (*callback)(void)) {
+
+    prog_1->quit_cb = callback;
+}
+
+void prog_0_quit() {
+    
+    if (!prog_0->enabled || prog_0->exiting)
+        return;
+
+    if (prog_0->quit_cb)
+        prog_0->quit_cb();
+
+    // TODO free space in RAM
+
+    *prog_0 = EMPTY_PROG_INFO;
+
+    // TODO jump program counter
+}
+
+void prog_1_quit() {
+    
+    if (!prog_1->enabled || prog_1->exiting)
+        return;
+
+    if (prog_1->quit_cb)
+        prog_1->quit_cb();
+
+    // TODO free space in RAM
+
+    *prog_1 = EMPTY_PROG_INFO;
+
+    // TODO jump program counter
+}
+
+void prog_0_fquit() {
+
+    if (!prog_0->enabled)
+        return;
+
+    // TODO free space in RAM
+
+    *prog_0 = EMPTY_PROG_INFO;
+
+    // TODO jump program counter
+}
+
+void prog_1_fquit() {
+
+    if (!prog_1->enabled)
+        return;
+
+    // TODO free space in RAM
+
+    *prog_1 = EMPTY_PROG_INFO;
+
+    // TODO jump program counter
+}
\ No newline at end of file