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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@220 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing 2002-04-25 00:15:04 +00:00
parent 99406a6635
commit 7b9581a131
5 changed files with 49 additions and 41 deletions
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2
firmware/kernel.c
View file

@ -17,6 +17,7 @@
*
****************************************************************************/
#include "kernel.h"
#include "thread.h"
long current_tick = 0;
@ -32,4 +33,5 @@ void sleep(int ticks)
void yield(void)
{
switch_thread();
}

3
firmware/test/kernel/Makefile
View file

@ -14,7 +14,8 @@ TARGET = -DARCHOS_PLAYER_OLD=1
CFLAGS = -g -O -Wall -m1 -save-temps -nostdlib -Wstrict-prototypes -fomit-frame-pointer -fschedule-insns -fno-builtin $(INCLUDES) $(TARGET)
AFLAGS += -small -relax
OBJS= ../../crt0.o ../../system.o main.o timer.o ../../thread.o ../../debug.o
OBJS= ../../crt0.o ../../system.o main.o timer.o \
../../thread.o ../../kernel.o ../../debug.o
%.o: %.S
$(CC) -o $@ $(CFLAGS) $(INCLUDES) $(DEFS) -c $<

35
firmware/test/kernel/main.c
View file

@ -17,6 +17,7 @@
*
****************************************************************************/
#include "thread.h"
#include "kernel.h"
#include "sh7034.h"
#include "debug.h"
@ -30,11 +31,11 @@ void t2(void);
int main(void)
{
char buf[40];
char str[32];
int i=0;
char buf[40];
char str[32];
int i=0;
/* Clear it all! */
/* Clear it all! */
SSR1 &= ~(SCI_RDRF | SCI_ORER | SCI_PER | SCI_FER);
/* This enables the serial Rx interrupt, to be able to exit into the
@ -46,31 +47,31 @@ int main(void)
debugf("OK. Let's go\n");
tick_start(40);
create_thread(t1, s1, 1024);
create_thread(t2, s2, 1024);
while(1)
{
debugf("t0\n");
switch_thread();
debugf("t0\n");
sleep(100);
}
}
void t1(void)
{
while(1)
{
debugf("t1\n");
switch_thread();
}
while(1)
{
debugf("t1\n");
sleep(200);
}
}
void t2(void)
{
while(1)
{
debugf("t2\n");
switch_thread();
}
while(1)
{
debugf("t2\n");
sleep(300);
}
}

18
firmware/test/kernel/timer.c
View file

@ -19,6 +19,7 @@
#include "sh7034.h"
#include "system.h"
#include "debug.h"
#include "kernel.h"
void tick_start(unsigned int interval_in_ms)
{
@ -26,6 +27,7 @@ void tick_start(unsigned int interval_in_ms)
count = FREQ / 1000 / 8 * interval_in_ms;
debugf("count = %d\n", count);
if(count > 0xffff)
{
debugf("Error! The tick interval is too long (%d ms)\n",
@ -40,24 +42,22 @@ void tick_start(unsigned int interval_in_ms)
TMDR &= ~0x01; /* Operate normally */
TCNT0 = 0; /* Start counting at 0 */
GRA0 = 0xfff0;
GRA0 = count;
TCR0 = 0x23; /* Clear at GRA match, sysclock/8 */
TSTR |= 0x01; /* Start timer 1 */
/* Enable interrupt on level 1 */
IPRC = (IPRC & ~0x00f0) | 0x0010;
TIER0 |= 0x01; /* Enable GRA match interrupt */
while(1)
{
}
TSR0 &= ~0x01;
TIER0 |= 0x01; /* Enable GRA match interrupt */
TSTR |= 0x01; /* Start timer 1 */
}
#pragma interrupt
void IMIA0(void)
{
current_tick++;
TSR0 &= ~0x01;
debugf("Yes\n");
}

32
firmware/thread.c
View file

@ -52,16 +52,18 @@ static inline void stctx(void* addr)
"mov.l r9, @(4, %1)\n\t"
"mov.l r10, @(8, %1)\n\t"
"mov.l r11, @(12, %1)\n\t"
"mov.l r12, @(16, %1)\n\t"
"mov.l r13, @(20, %1)\n\t"
"mov.l r14, @(24, %1)\n\t"
"mov.l r15, @(28, %1)\n\t"
"add #16,%1\n\t"
"mov.l r12, @(0, %1)\n\t"
"mov.l r13, @(4, %1)\n\t"
"mov.l r14, @(8, %1)\n\t"
"mov.l r15, @(12, %1)\n\t"
"add #16,%1\n\t"
"stc sr, %0\n\t"
"mov.l %0, @(32, %1)\n\t"
"mov.l %0, @(0, %1)\n\t"
"stc gbr, %0\n\t"
"mov.l %0, @(36, %1)\n\t"
"mov.l %0, @(4, %1)\n\t"
"sts pr, %0\n\t"
"mov.l %0, @(40, %1)" : "=r&" (tmp) : "r" (addr));
"mov.l %0, @(8, %1)" : "=r&" (tmp) : "r" (addr));
}
/*---------------------------------------------------------------------------
@ -76,15 +78,17 @@ static inline void ldctx(void* addr)
"mov.l @(4, %1), r9\n\t"
"mov.l @(8, %1), r10\n\t"
"mov.l @(12, %1), r11\n\t"
"mov.l @(16, %1), r12\n\t"
"mov.l @(20, %1), r13\n\t"
"mov.l @(24, %1), r14\n\t"
"mov.l @(28, %1), r15\n\t"
"mov.l @(32, %1), r0\n\t"
"add #16,%1\n\t"
"mov.l @(0, %1), r12\n\t"
"mov.l @(4, %1), r13\n\t"
"mov.l @(8, %1), r14\n\t"
"mov.l @(12, %1), r15\n\t"
"add #16,%1\n\t"
"mov.l @(0, %1), r0\n\t"
"ldc %0, sr\n\t"
"mov.l @(36, %1), %0\n\t"
"mov.l @(4, %1), %0\n\t"
"ldc %0, gbr\n\t"
"mov.l @(40, %1), %0\n\t"
"mov.l @(8, %1), %0\n\t"
"lds %0, pr\n\t"
"mov.l %0, @(0, r15)" : "=r&" (tmp) : "r" (addr));
}