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-rw-r--r--www/example/Makefile40
-rw-r--r--www/example/README7
-rw-r--r--www/example/app.lds23
-rw-r--r--www/example/main.c102
-rw-r--r--www/example/start.s23
5 files changed, 195 insertions, 0 deletions
diff --git a/www/example/Makefile b/www/example/Makefile
new file mode 100644
index 0000000000..7d8f2fdefd
--- /dev/null
+++ b/www/example/Makefile
@@ -0,0 +1,40 @@
1HPATH = /usr/local/sh-gcc/bin
2CC = $(HPATH)/sh-elf-gcc
3LD = $(HPATH)/sh-elf-ld
4AR = $(HPATH)/sh-elf-ar
5AS = $(HPATH)/sh-elf-as
6OC = $(HPATH)/sh-elf-objcopy
7
8INCLUDES=-I.
9
10CFLAGS = -Os -Wall -m1 -nostdlib -Wstrict-prototypes -fomit-frame-pointer -fschedule-insns $(INCLUDES)
11AFLAGS += -small -relax
12
13OBJS= start.o main.o
14
15%.o: %.s
16 $(CC) -o $@ $(CFLAGS) $(INCLUDES) $(DEFS) -c $<
17
18
19all : archos.mod # archos.asm
20
21main.o: main.c
22
23archos.elf : $(OBJS) app.lds
24 $(CC) -nostdlib -o archos.elf $(OBJS) -lgcc -Tapp.lds -Wl,-Map,archos.map
25
26archos.bin : archos.elf
27 $(OC) -O binary archos.elf archos.bin
28
29archos.asm: archos.bin
30 sh2d -sh1 archos.bin > archos.asm
31
32archos.mod : archos.bin
33 scramble archos.bin archos.mod
34
35dist:
36 tar czvf dist.tar.gz Makefile main.c start.s app.lds
37
38clean:
39 -rm -f *.x *.i *.o *.elf *.bin *.map *.mod *.bak *~
40
diff --git a/www/example/README b/www/example/README
new file mode 100644
index 0000000000..ca8ea36c37
--- /dev/null
+++ b/www/example/README
@@ -0,0 +1,7 @@
1Rockbox example build
2---------------------
3
4These files are meant to show how to build a simple program for the Archos.
5
6Note that the display code only works on older machines (<4.50) so don't
7look too hard on that.
diff --git a/www/example/app.lds b/www/example/app.lds
new file mode 100644
index 0000000000..03bd1b2b54
--- /dev/null
+++ b/www/example/app.lds
@@ -0,0 +1,23 @@
1ENTRY(_start)
2OUTPUT_FORMAT(elf32-sh)
3SECTIONS
4{
5 .vectors 0x09000000 :
6 {
7 *(.vectors);
8 . = ALIGN(0x200);
9 *(.text.start)
10 *(.text)
11 *(.rodata)
12 }
13
14 .bss :
15 {
16 _stack = . + 0x1000;
17 }
18
19 .pad 0x0900C800 :
20 {
21 LONG(0);
22 }
23 }
diff --git a/www/example/main.c b/www/example/main.c
new file mode 100644
index 0000000000..9188aaf640
--- /dev/null
+++ b/www/example/main.c
@@ -0,0 +1,102 @@
1#define PBDR (*((volatile unsigned short *)0x05FFFFC2))
2
3#define DC 1
4#define CS1 2
5#define SDA 4
6#define SCK 8
7
8static const unsigned char ascii2lcd[] = {
9 0x00,0x01,0x02,0x03,0x00,0x84,0x85,0x89,
10 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
11 0xec,0xe3,0xe2,0xe1,0xe0,0xdf,0x15,0x00,
12 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
13 0x24,0x25,0x26,0x37,0x06,0x29,0x2a,0x2b,
14 0x2c,0x2d,0x2e,0x2f,0x30,0x31,0x32,0x33,
15 0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x3b,
16 0x3c,0x3d,0x3e,0x3f,0x40,0x41,0x42,0x43,
17 0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,
18 0x4c,0x4d,0x4e,0x4f,0x50,0x51,0x52,0x53,
19 0x54,0x55,0x56,0x57,0x58,0x59,0x5a,0x5b,
20 0x5c,0x5d,0x5e,0xa9,0x33,0xce,0x00,0x15,
21 0x00,0x65,0x66,0x67,0x68,0x69,0x6a,0x6b,
22 0x6c,0x6d,0x6e,0x6f,0x70,0x71,0x72,0x73,
23 0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x7b,
24 0x7c,0x7d,0x7e,0x24,0x24,0x24,0x24,0x24,
25 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
26 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
27 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
28 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
29 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
30 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
31 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
32 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
33 0x45,0x45,0x45,0x45,0x45,0x45,0x24,0x47,
34 0x49,0x49,0x49,0x49,0x4d,0x4d,0x4d,0x4d,
35 0x48,0x52,0x53,0x53,0x53,0x53,0x53,0x24,
36 0x24,0x59,0x59,0x59,0x59,0x5d,0x24,0x24,
37 0x65,0x65,0x65,0x65,0x65,0x65,0x24,0x67,
38 0x69,0x69,0x69,0x69,0x6d,0x6d,0x6d,0x6d,
39 0x73,0x72,0x73,0x73,0x73,0x73,0x73,0x24,
40 0x24,0x79,0x79,0x79,0x79,0x7d,0x24,0x7d
41};
42
43void lcd_write(int byte, int data)
44{
45 int i;
46 char on,off;
47
48 PBDR &= ~CS1; /* enable lcd chip select */
49
50 if ( data ) {
51 on=~(SDA|SCK);
52 off=SCK|DC;
53 }
54 else {
55 on=~(SDA|SCK|DC);
56 off=SCK;
57 }
58 /* clock out each bit, MSB first */
59 for (i=0x80;i;i>>=1)
60 {
61 PBDR &= on;
62 if (i & byte)
63 PBDR |= SDA;
64 PBDR |= off;
65 }
66
67 PBDR |= CS1; /* disable lcd chip select */
68}
69
70void lcd_printxy( char x, char y, unsigned char* string, int len )
71{
72 int i;
73 lcd_write(0xb0+y*16+x,0);
74 for (i=0; string[i] && i<len; i++)
75 lcd_write(ascii2lcd[string[i]],1);
76}
77
78int main(void)
79{
80 lcd_printxy(0,0,"Open Source",11);
81
82 /* simple scroll */
83 while (1) {
84 int i,j;
85 char* string = " Jukebox Jukebox ";
86 for ( i=0; i<11; i++ ) {
87 lcd_printxy(0,1,string+i,11);
88 for (j=0; j<600000; j++);
89 PBDR ^= 0x40; /* toggle LED (PB6) */
90 }
91 }
92}
93
94extern const void stack(void);
95
96const void* vectors[] __attribute__ ((section (".vectors"))) =
97{
98 main, /* Power-on reset */
99 stack, /* Power-on reset (stack pointer) */
100 main, /* Manual reset */
101 stack /* Manual reset (stack pointer) */
102};
diff --git a/www/example/start.s b/www/example/start.s
new file mode 100644
index 0000000000..fd4669db56
--- /dev/null
+++ b/www/example/start.s
@@ -0,0 +1,23 @@
1! note: sh-1 has a "delay cycle" after every branch where you can
2! execute another instruction "for free".
3
4 .file "start.s"
5 .section .text.start
6 .extern _main
7 .extern _vectors
8 .extern _stack
9 .global _start
10 .align 2
11
12_start:
13 mov.l 1f, r1
14 mov.l 3f, r3
15 mov.l 2f, r15
16 jmp @r3
17 ldc r1, vbr
18 nop
19
201: .long _vectors
212: .long _stack
223: .long _main
23 .type _start,@function
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-23 04:34:06 +0000