diff options
| author | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-11-18 20:07:32 +0000 |
|---|---|---|
| committer | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-11-18 20:07:32 +0000 |
| commit | a1d1bb3101db1fea4ff47b74de15208971f8d64e (patch) | |
| tree | d8062f3891754bd62a26bfd58613b5c74fb029c3 /target-m68k | |
| parent | d6fc1b397bca686d2ac92f4e8f470c98472a3c4d (diff) | |
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-m68k')
| -rw-r--r-- | target-m68k/translate.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/target-m68k/translate.c b/target-m68k/translate.c index 07f0640c03..49e2cb27df 100644 --- a/target-m68k/translate.c +++ b/target-m68k/translate.c @@ -2965,6 +2965,7 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, { DisasContext dc1, *dc = &dc1; uint16_t *gen_opc_end; + CPUBreakpoint *bp; int j, lj; target_ulong pc_start; int pc_offset; @@ -2998,9 +2999,9 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, do { pc_offset = dc->pc - pc_start; gen_throws_exception = NULL; - 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_exception(dc, dc->pc, EXCP_DEBUG); dc->is_jmp = DISAS_JUMP; break; @@ -3030,7 +3031,7 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, /* Terminate the TB on memory ops if watchpoints are present. */ /* FIXME: This should be replaced by the deterministic execution * IRQ raising bits. */ - if (dc->is_mem && env->nb_watchpoints) + if (dc->is_mem && env->watchpoints) break; } while (!dc->is_jmp && gen_opc_ptr < gen_opc_end && !env->singlestep_enabled && |