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authorPeter Maydell <peter.maydell@linaro.org>2014-08-19 18:56:26 +0100
committerPeter Maydell <peter.maydell@linaro.org>2014-08-19 19:02:03 +0100
commitcc9c1ed14e876d724107fe72f74dcac71a003fbc (patch)
treec141b05ba8626bded1294efecc57766ead3c3289 /target-mips/cpu.c
parent3a2982038afa0f04fc99b259e8ad8c18be0b04cb (diff)
target-arm: A64: Avoid duplicate exit_tb(0) in non-linked goto_tb
If gen_goto_tb() decides not to link the two TBs, then the fallback path generates unnecessary code: * if singlestep is enabled then we generate unreachable code after the gen_exception_internal(EXCP_DEBUG) * if singlestep is disabled then we will generate exit_tb(0) twice, once in gen_goto_tb() and once coming out of the main loop with is_jmp set to DISAS_JUMP Correct these deficiencies by only emitting exit_tb() in the non-singlestep case, in which case we can use DISAS_TB_JUMP to suppress the main-loop exit_tb(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Diffstat (limited to 'target-mips/cpu.c')
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