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New debug feature: Use the SH1 user break controller to catch illegal memory accesses

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5026 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2004-08-30 19:52:45 +00:00
parent 56fd6f9316
commit 06cb237af6
7 changed files with 104 additions and 6 deletions
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34
apps/debug_menu.c
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@ -122,7 +122,7 @@ bool dbg_os(void)
usage = thread_stack_usage(currval);
snprintf(buf, 32, "%d: %d%% ", currval, usage);
lcd_puts(0, 1, buf);
button = button_get_w_tmo(HZ/10);
switch(button)
@ -130,7 +130,7 @@ bool dbg_os(void)
case BUTTON_STOP:
return false;
case BUTTON_LEFT:
case BUTTON_LEFT:
currval--;
if(currval < 0)
currval = num_threads-1;
@ -301,6 +301,7 @@ bool dbg_hw_info(void)
bool got_id; /* flag if we managed to get the flash IDs */
unsigned rom_crc = 0xFFFF; /* CRC16 of the boot ROM */
bool has_bootrom; /* flag for boot ROM present */
int oldmode; /* saved memory guard mode */
if(PADR & 0x400)
usb_polarity = 0; /* Negative */
@ -312,6 +313,8 @@ bool dbg_hw_info(void)
else
pr_polarity = 1; /* Positive */
oldmode = system_memory_guard(MEMGUARD_NONE); /* disable memory guard */
/* get flash ROM type */
got_id = dbg_flash_id(&manu, &id, 0x5555, 0x2AAA); /* try SST, Atmel, NexFlash */
if (!got_id)
@ -325,6 +328,8 @@ bool dbg_hw_info(void)
rom_crc = crc_16((unsigned char*)0x0000, 64*1024);
}
system_memory_guard(oldmode); /* re-enable memory guard */
lcd_setmargins(0, 0);
lcd_setfont(FONT_SYSFIXED);
lcd_clear_display();
@ -389,12 +394,15 @@ bool dbg_hw_info(void)
bool got_id; /* flag if we managed to get the flash IDs */
unsigned rom_crc = 0xFFFF; /* CRC16 of the boot ROM */
bool has_bootrom; /* flag for boot ROM present */
int oldmode; /* saved memory guard mode */
if(PADR & 0x400)
usb_polarity = 0; /* Negative */
else
usb_polarity = 1; /* Positive */
oldmode = system_memory_guard(MEMGUARD_NONE); /* disable memory guard */
/* get flash ROM type */
got_id = dbg_flash_id(&manu, &id, 0x5555, 0x2AAA); /* try SST, Atmel, NexFlash */
if (!got_id)
@ -407,6 +415,8 @@ bool dbg_hw_info(void)
/* calculate CRC16 checksum of boot ROM */
rom_crc = crc_16((unsigned char*)0x0000, 64*1024);
}
system_memory_guard(oldmode); /* re-enable memory guard */
lcd_clear_display();
@ -579,7 +589,7 @@ bool dbg_ports(void)
snprintf(buf, 32, "ATA: %s, 0x%x",
ata_device?"slave":"master", ata_io_address);
lcd_puts(0, 7, buf);
lcd_update();
button = button_get_w_tmo(HZ/10);
@ -1440,6 +1450,7 @@ static bool dbg_disk_info(void)
bool dbg_save_roms(void)
{
int fd;
int oldmode = system_memory_guard(MEMGUARD_NONE);
fd = creat("/internal_rom_0000-FFFF.bin", O_WRONLY);
if(fd >= 0)
@ -1455,6 +1466,7 @@ bool dbg_save_roms(void)
close(fd);
}
system_memory_guard(oldmode);
return false;
}
@ -1510,6 +1522,21 @@ bool dbg_screendump(void)
}
#endif
bool dbg_set_memory_guard(void)
{
static const struct opt_items names[MAXMEMGUARD] = {
{ "None", -1 },
{ "Flash ROM writes", -1 },
{ "Zero area (all)", -1 }
};
int mode = system_memory_guard(MEMGUARD_KEEP);
set_option( "Catch mem accesses", &mode, INT, names, MAXMEMGUARD, NULL);
system_memory_guard(mode);
return false;
}
bool debug_menu(void)
{
int m;
@ -1524,6 +1551,7 @@ bool debug_menu(void)
#endif /* HAVE_RTC */
#endif /* HAVE_LCD_BITMAP */
{ "View OS stacks", dbg_os },
{ "Catch mem accesses", dbg_set_memory_guard },
#ifdef HAVE_MAS3507D
{ "View MAS info", dbg_mas_info },
#endif