Commit 14c8a3a1 authored by Sandra Loosemore's avatar Sandra Loosemore Committed by Laurent Vivier
Browse files

Fix breakpoint support in Nios II user-mode emulation. 



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: default avatarSandra Loosemore <sandra@codesourcery.com>
Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Message-Id: <1550076626-7202-1-git-send-email-sandra@codesourcery.com>
Signed-off-by: default avatarLaurent Vivier <laurent@vivier.eu>
parent cd813367

linux-user/nios2/cpu_loop.c

+6 −0
Original line number Diff line number Diff line
@@ -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 */