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Cleaned up more magic numbers in cortexm3.c

This commit is contained in:
Gareth McMullin 2011-03-02 21:34:36 +13:00
parent c648d7c9e2
commit a139aae479
1 changed files with 15 additions and 6 deletions
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21
src/cortexm3.c
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@ -45,11 +45,21 @@ static char cm3_driver_str[] = "ARM Cortex-M3";
#define CM3_SCS_BASE (CM3_PPB_BASE + 0xE000)
#define CM3_DFSR (CM3_SCS_BASE + 0xD30)
#define CM3_DHCSR (CM3_SCS_BASE + 0xDF0)
#define CM3_DCRSR (CM3_SCS_BASE + 0xDF4)
#define CM3_DCRDR (CM3_SCS_BASE + 0xDF8)
#define CM3_DEMCR (CM3_SCS_BASE + 0xDFC)
/* Debug Fault Status Register (DFSR) */
/* Bits 31:5 - Reserved */
#define CM3_DFSR_RESETALL 0x1F
#define CM3_DFSR_EXTERNAL (1 << 4)
#define CM3_DFSR_VCATCH (1 << 3)
#define CM3_DFSR_DWTTRAP (1 << 2)
#define CM3_DFSR_BKPT (1 << 1)
#define CM3_DFSR_HALTED (1 << 0)
/* Debug Halting Control and Status Register (DHCSR) */
/* This key must be written to bits 31:16 for write to take effect */
#define CM3_DHCSR_DBGKEY 0xA05F0000
@ -168,7 +178,7 @@ cm3_attach(struct target_s *target)
CM3_DEMCR_VC_CORERESET);
/* Reset DFSR flags */
adiv5_ap_mem_write(t->ap, 0xE000ED30UL, 0x1F);
adiv5_ap_mem_write(t->ap, CM3_DFSR, CM3_DFSR_RESETALL);
/* Clear any stale breakpoints */
for(i = 0; i < 6; i++) {
@ -285,7 +295,7 @@ cm3_reset(struct target_s *target)
for(int i = 0; i < 10000; i++) asm("nop");
/* Reset DFSR flags */
adiv5_ap_mem_write(t->ap, 0xE000ED30UL, 0x1F);
adiv5_ap_mem_write(t->ap, CM3_DFSR, CM3_DFSR_RESETALL);
}
static void
@ -326,10 +336,9 @@ cm3_halt_resume(struct target_s *target, uint8_t step)
static int cm3_fault_unwind(struct target_s *target)
{
struct target_ap_s *t = (void *)target;
uint32_t dfsr = adiv5_ap_mem_read(t->ap, 0xE000ED30UL); //DFSR
//gdb_outf("DFSR = 0x%08X\n", dfsr);
adiv5_ap_mem_write(t->ap, 0xE000ED30UL, dfsr);/* write back to reset */
if(dfsr & (1 << 3)) { // VCATCH
uint32_t dfsr = adiv5_ap_mem_read(t->ap, CM3_DFSR);
adiv5_ap_mem_write(t->ap, CM3_DFSR, dfsr);/* write back to reset */
if(dfsr & (1 << 3)) {
/* Unwind exception */
uint32_t regs[16];
uint32_t stack[8];