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The fallback code in cpu_loop_exit_sigsegv is sufficient
for mips linux-user.
This means we can remove tcg/user/tlb_helper.c entirely.
Remove the code from cpu_loop that raised SIGSEGV.
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Restrict cpu_exec_interrupt() and its callees to sysemu.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210911165434.531552-15-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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tlb_helper.c's #ifdef'ry hides a quite simple user-mode
implementation of mips_cpu_tlb_fill().
Copy the user-mode implementation (without #ifdef'ry) to
tcg/user/helper.c and simplify tlb_helper.c's #ifdef'ry.
This will allow us to restrict tlb_helper.c to sysemu.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-15-f4bug@amsat.org>
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The #ifdef'ry hides that the user-mode implementation of
mips_cpu_do_interrupt() simply sets exception_index = EXCP_NONE.
Add this simple implementation to tcg/user/tlb_helper.c, and
the corresponding Meson machinery to build this file when user
emulation is configured.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-14-f4bug@amsat.org>
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