merge branch 'atlas' into naopross

1 files changed, 55 insertions, 0 deletions

diff --git a/sw/z80/kernel/include/sysexe.h b/sw/z80/kernel/include/sysexe.h
new file mode 100644
index 0000000..9c13c09
--- /dev/null
+++ b/sw/z80/kernel/include/sysexe.h
@@ -0,0 +1,55 @@
+#ifndef SYS_EXE
+#define SYS_EXE
+
+#define SYS_EXEC_ADDR // TODO find an address in Kernel space
+
+struct sys_progman {
+
+    // program 0 enabled
+
+    uint8_t prog_0_enabled:1;
+
+    // program 1 enabled
+
+    /*
+    *   Obs: A program is enabled when its space is allocated 
+    *        and its virtual program counter is stored in 
+    *        the hardware or in the silent_pc.
+    *        An enabled program is not necessarly running, it 
+    *        could be paused too.
+    */
+
+    uint8_t prog_1_enabled:1;
+
+    // running's program id
+
+    uint8_t prog_running:1;
+};
+
+struct sys_exec {
+
+    /*
+    *   Virtual addresses are activated
+    */
+
+    uint8_t virtual_addr:1;
+
+    struct sys_progman progman;
+
+    /*
+    *   The silent_pc is the place designed to store the 
+    *   program counter of the program that's not running
+    */
+
+    uint8_t silent_pc:12;
+};
+
+/*
+*   Function to access informations
+*/
+
+uint8_t vaddr_enabled();
+
+struct sys_progman * sys_prog_data(struct sys_progman *data);
+
+#endif
\ No newline at end of file