From f209dc3a24987419c3f7ad9fbe3fe2b4dfb16427 Mon Sep 17 00:00:00 2001
From: Nao Pross <naopross@thearcway.org>
Date: Fri, 25 Aug 2017 10:26:21 +0200
Subject: implements pio.h functions and makefile update to optimize size
- remove syscall.h, unused and not implemented
- bug fix for memcmp() in string.c
other changes are still partially unfinished and might not work
---
sw/z80/kernel/include/drivers/pio.h | 20 +++++++++++---------
sw/z80/kernel/include/memory.h | 3 +--
sw/z80/kernel/include/process.h | 21 ++++++++++-----------
sw/z80/kernel/include/syscall.h | 20 --------------------
4 files changed, 22 insertions(+), 42 deletions(-)
delete mode 100644 sw/z80/kernel/include/syscall.h
(limited to 'sw/z80/kernel/include')
diff --git a/sw/z80/kernel/include/drivers/pio.h b/sw/z80/kernel/include/drivers/pio.h
index 5d289ca..0df2ed0 100644
--- a/sw/z80/kernel/include/drivers/pio.h
+++ b/sw/z80/kernel/include/drivers/pio.h
@@ -7,25 +7,27 @@
#define PIO_A 0
#define PIO_B 1
-#define PIO_MODE_0 0
-#define PIO_MODE_1 1
-#define PIO_MODE_2 2
-#define PIO_MODE_3 3
+#define PIO_MODE_BYTE_IN 0
+#define PIO_MODE_BYTE_OUT 1
+#define PIO_MODE_BYTE_BI 2
+#define PIO_MODE_BIT_IO 3
#define PIO_INT_ACTIVE_HIGH (1<<5)
#define PIO_INT_AND_MODE (1<<6)
#define PIO_INT_ENABLE (1<<7)
-void _pio_data(int port, uint8_t data);
-void _pio_command(int port, uint8_t cmd);
+inline void _pio_data(int port, uint8_t data);
+inline void _pio_control(int port, uint8_t cmd);
+
+void pio_set_mode(int port, int mode, uint8_t io);
-void pio_set_mode(int port, int mode);
void pio_set_interrupts(int port, int control);
-void pio_set_interrupts_mask(int port, uint8_t mask);
-void pio_set_io(int port, uint8_t io);
+void pio_set_interrupts_mask(int port, int control, uint8_t mask);
// uint8_t pio_read_data(int port);
+uint8_t pio_read(int port);
+void pio_write(int port, uint8_t data);
inline int pio_read_pin(int port, uint8_t pin);
inline void pio_write_pin(int port, uint8_t pin);
diff --git a/sw/z80/kernel/include/memory.h b/sw/z80/kernel/include/memory.h
index e4352b5..60fc98a 100644
--- a/sw/z80/kernel/include/memory.h
+++ b/sw/z80/kernel/include/memory.h
@@ -33,8 +33,7 @@
struct page
{
- uint used :1;
- pid_t pid; // process owner of the page
+ pid_t pid; // process owner of the page (0 if free)
uint16_t addr; // physical address
};
diff --git a/sw/z80/kernel/include/process.h b/sw/z80/kernel/include/process.h
index d7aa7fd..3b0c843 100644
--- a/sw/z80/kernel/include/process.h
+++ b/sw/z80/kernel/include/process.h
@@ -9,6 +9,12 @@
*/
#define PROC_COUNT 2
+/* the pid is defined with a single byte (pid_t is uint8_t), because of that
+ * there cannot be more than 255 processes open at the same time. this is a
+ * limitation but for our purposes is more than enough
+ */
+#define PID_COUNT_MAX 255
+
struct executable
{
void *text;
@@ -19,19 +25,12 @@ struct executable
struct process
{
- uint blocked :1; // process is waiting for hardware or locked
- uint running :1; // pid is used
- struct page pages[4]; // pages used by the process
- // TODO: implement quick callback?
+ uint blocked :1; // process is waiting for hardware or locked
+ uint running :1; // pid is used
+ uint pages; // number of pages used by the process
+ struct page page[4]; // pages used by the process
};
-/* the pid is defined with a single byte (pid_t is uint8_t), because of that
- * there cannot be more than 255 processes open at the same time. this is a
- * limitation but for our purposes is more than enough
- */
-extern struct process proc_table[255];
-extern struct process *current_proc;
-
pid_t newpid(void);
int fork(void);
diff --git a/sw/z80/kernel/include/syscall.h b/sw/z80/kernel/include/syscall.h
deleted file mode 100644
index 29941c9..0000000
--- a/sw/z80/kernel/include/syscall.h
+++ /dev/null
@@ -1,20 +0,0 @@
-#ifndef __SYS_CALL_H__
-#define __SYS_CALL_H__
-
-/*
-* Enable / disable virtual address traslation
-*/
-
-extern void v_addr(uint8_t flag);
-
-/*
-* Programs execution
-*/
-
-extern void prog_exec_0(void);
-extern void prog_exec_1(void);
-
-extern void prog_stop_0(void);
-extern void prog_stop_1(void);
-
-#endif
\ No newline at end of file
--
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