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Add a copy of DEMCR to Cortex-M private data to preserve over 'run'.

This commit is contained in:
Gareth McMullin 2012-08-10 21:07:06 +12:00
parent 7be4866239
commit 9137c2d058
1 changed files with 41 additions and 36 deletions
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25
src/cortexm.c
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@ -1,7 +1,7 @@
/*
* This file is part of the Black Magic Debug project.
*
* Copyright (C) 2011 Black Sphere Technologies Ltd.
* Copyright (C) 2012 Black Sphere Technologies Ltd.
* Written by Gareth McMullin <gareth@blacksphere.co.nz>
*
* This program is free software: you can redistribute it and/or modify
@ -217,6 +217,8 @@ struct cortexm_priv {
/* Breakpoint unit status */
uint32_t hw_breakpoint[CORTEXM_MAX_BREAKPOINTS];
unsigned hw_breakpoint_max;
/* Copy of DEMCR for vector-catch */
uint32_t demcr;
};
/* Register number tables */
@ -346,9 +348,14 @@ cortexm_probe(struct target_s *target)
target->tdesc = tdesc_cortex_mf;
}
ap->priv = calloc(1, sizeof(struct cortexm_priv));
struct cortexm_priv *priv = calloc(1, sizeof(*priv));
ap->priv = priv;
ap->priv_free = free;
/* Default vectors to catch */
priv->demcr = CORTEXM_DEMCR_TRCENA | CORTEXM_DEMCR_VC_HARDERR |
CORTEXM_DEMCR_VC_CORERESET;
#define PROBE(x) \
do { if (!(x)(target)) return 0; else target_check_error(target); } while (0)
@ -378,9 +385,7 @@ cortexm_attach(struct target_s *target)
while(!target_halt_wait(target));
/* Request halt on reset */
adiv5_ap_mem_write(ap, CORTEXM_DEMCR,
CORTEXM_DEMCR_TRCENA | CORTEXM_DEMCR_VC_HARDERR |
CORTEXM_DEMCR_VC_CORERESET);
adiv5_ap_mem_write(ap, CORTEXM_DEMCR, priv->demcr);
/* Reset DFSR flags */
adiv5_ap_mem_write(ap, CORTEXM_DFSR, CORTEXM_DFSR_RESETALL);
@ -807,9 +812,9 @@ cortexm_check_hw_wp(struct target_s *target, uint32_t *addr)
static bool cortexm_vector_catch(target *t, int argc, char *argv[])
{
ADIv5_AP_t *ap = adiv5_target_ap(t);
struct cortexm_priv *priv = ap->priv;
const char *vectors[] = {"reset", NULL, NULL, NULL, "mm", "nocp",
"chk", "stat", "bus", "int", "hard"};
uint32_t demcr = adiv5_ap_mem_read(ap, CORTEXM_DEMCR);
uint32_t tmp = 0;
unsigned i, j;
@ -824,18 +829,18 @@ static bool cortexm_vector_catch(target *t, int argc, char *argv[])
}
if (argv[1][0] == 'e')
demcr |= tmp;
priv->demcr |= tmp;
else
demcr &= ~tmp;
priv->demcr &= ~tmp;
adiv5_ap_mem_write(ap, CORTEXM_DEMCR, demcr);
adiv5_ap_mem_write(ap, CORTEXM_DEMCR, priv->demcr);
}
gdb_out("Catching vectors: ");
for (i = 0; i < sizeof(vectors) / sizeof(char*); i++) {
if (!vectors[i])
continue;
if (demcr & (1 << i))
if (priv->demcr & (1 << i))
gdb_outf("%s ", vectors[i]);
}
gdb_out("\n");