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authoraliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>2008-11-18 20:07:32 +0000
committeraliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>2008-11-18 20:07:32 +0000
commita1d1bb3101db1fea4ff47b74de15208971f8d64e (patch)
treed8062f3891754bd62a26bfd58613b5c74fb029c3 /target-arm
parentd6fc1b397bca686d2ac92f4e8f470c98472a3c4d (diff)
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Refactor and enhance break/watchpoint API (Jan Kiszka)
This patch prepares the QEMU cpu_watchpoint/breakpoint API to allow the succeeding enhancements this series comes with. First of all, it overcomes MAX_BREAKPOINTS/MAX_WATCHPOINTS by switching to dynamically allocated data structures that are kept in linked lists. This also allows to return a stable reference to the related objects, required for later introduced x86 debug register support. Breakpoints and watchpoints are stored with their full information set and an additional flag field that makes them easily extensible for use beyond pure guest debugging. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5738 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-arm')
-rw-r--r--target-arm/translate.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/target-arm/translate.c b/target-arm/translate.c
index 9d52991..237c5f6 100644
--- a/target-arm/translate.c
+++ b/target-arm/translate.c
@@ -8600,6 +8600,7 @@ static inline void gen_intermediate_code_internal(CPUState *env,
int search_pc)
{
DisasContext dc1, *dc = &dc1;
+ CPUBreakpoint *bp;
uint16_t *gen_opc_end;
int j, lj;
target_ulong pc_start;
@@ -8676,9 +8677,9 @@ static inline void gen_intermediate_code_internal(CPUState *env,
}
#endif
- if (env->nb_breakpoints > 0) {
- for(j = 0; j < env->nb_breakpoints; j++) {
- if (env->breakpoints[j] == dc->pc) {
+ if (unlikely(env->breakpoints)) {
+ for (bp = env->breakpoints; bp != NULL; bp = bp->next) {
+ if (bp->pc == dc->pc) {
gen_set_condexec(dc);
gen_set_pc_im(dc->pc);
gen_exception(EXCP_DEBUG);
@@ -8731,7 +8732,7 @@ static inline void gen_intermediate_code_internal(CPUState *env,
/* Terminate the TB on memory ops if watchpoints are present. */
/* FIXME: This should be replacd by the deterministic execution
* IRQ raising bits. */
- if (dc->is_mem && env->nb_watchpoints)
+ if (dc->is_mem && env->watchpoints)
break;
/* Translation stops when a conditional branch is enoutered.