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exec.c: Fix calculation of code_gen_buffer_max_size 

When calculating the point at which we should not try to put another
TB into the code gen buffer, we have to allow not just for OPC_MAX_SIZE
but OPC_BUF_SIZE. This is because the target translate.c will only
stop when an instruction has put it past the OPC_MAX_SIZE limit, so
we have to include the MAX_OP_PER_INSTR margin which that final insn
might have used.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Peter Maydell 2011-06-22 11:58:25 +01:00 committed by Blue Swirl
parent 06c46bbab0
commit a884da8a06
1 changed files with 2 additions and 2 deletions
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4
exec.c
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@ -555,8 +555,8 @@ static void code_gen_alloc(unsigned long tb_size)
#endif #endif
#endif /* !USE_STATIC_CODE_GEN_BUFFER */ #endif /* !USE_STATIC_CODE_GEN_BUFFER */
map_exec(code_gen_prologue, sizeof(code_gen_prologue)); map_exec(code_gen_prologue, sizeof(code_gen_prologue));
code_gen_buffer_max_size = code_gen_buffer_size - code_gen_buffer_max_size = code_gen_buffer_size -
(TCG_MAX_OP_SIZE * OPC_MAX_SIZE); (TCG_MAX_OP_SIZE * OPC_BUF_SIZE);
code_gen_max_blocks = code_gen_buffer_size / CODE_GEN_AVG_BLOCK_SIZE; code_gen_max_blocks = code_gen_buffer_size / CODE_GEN_AVG_BLOCK_SIZE;
tbs = qemu_malloc(code_gen_max_blocks * sizeof(TranslationBlock)); tbs = qemu_malloc(code_gen_max_blocks * sizeof(TranslationBlock));
} }