Nios II user-mode emulation was missing handling for EXCP_DEBUG,
making the gdb stub essentially useless. This patch adds the missing
piece. The new code was copied from the existing EXCP_TRAP handling
and is also similar to what other targets (e.g., arm) do with EXCP_DEBUG.
Signed-off-by: Sandra Loosemore <san...@codesourcery.com>
---
linux-user/nios2/cpu_loop.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/linux-user/nios2/cpu_loop.c b/linux-user/nios2/cpu_loop.c
index b96b1aa..5aa1eca 100644
--- a/linux-user/nios2/cpu_loop.c
+++ b/linux-user/nios2/cpu_loop.c
@@ -73,6 +73,12 @@ void cpu_loop(CPUNios2State *env)
queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
break;
}
+ case EXCP_DEBUG:
+ info.si_signo = TARGET_SIGTRAP;
+ info.si_errno = 0;
+ info.si_code = TARGET_TRAP_BRKPT;
+ queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+ break;
case 0xaa:
switch (env->regs[R_PC]) {
/*case 0x1000:*/ /* TODO:__kuser_helper_version */
--
2.8.1
