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target-xtensa: drop usage of prev_debug_excp_handler 

Chains of exception handlers are currently unused feature. Dropping it
to be consistent with target-i386 but it may simplify qom-ifying CPU
in future like for target-i386.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
This commit is contained in:
Igor Mammedov 2012-06-21 17:57:19 +02:00
parent 130a038550
commit eeec69dc06
1 changed files with 1 additions and 7 deletions
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6
target-xtensa/helper.c
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@ -54,8 +54,6 @@ static uint32_t check_hw_breakpoints(CPUXtensaState *env)
return 0; return 0;
} }
static CPUDebugExcpHandler *prev_debug_excp_handler;
static void breakpoint_handler(CPUXtensaState *env) static void breakpoint_handler(CPUXtensaState *env)
{ {
if (env->watchpoint_hit) { if (env->watchpoint_hit) {
@ -70,9 +68,6 @@ static void breakpoint_handler(CPUXtensaState *env)
cpu_resume_from_signal(env, NULL); cpu_resume_from_signal(env, NULL);
} }
} }
if (prev_debug_excp_handler) {
prev_debug_excp_handler(env);
}
} }
XtensaCPU *cpu_xtensa_init(const char *cpu_model) XtensaCPU *cpu_xtensa_init(const char *cpu_model)
@ -105,7 +100,6 @@ XtensaCPU *cpu_xtensa_init(const char *cpu_model)
if (!debug_handler_inited && tcg_enabled()) { if (!debug_handler_inited && tcg_enabled()) {
debug_handler_inited = 1; debug_handler_inited = 1;
prev_debug_excp_handler =
cpu_set_debug_excp_handler(breakpoint_handler); cpu_set_debug_excp_handler(breakpoint_handler);
} }