diff options
author | Richard Henderson <richard.henderson@linaro.org> | 2020-10-30 18:59:09 -0700 |
---|---|---|
committer | Richard Henderson <richard.henderson@linaro.org> | 2021-01-07 05:09:41 -1000 |
commit | 4846cd37df83b24e65a42bb50e5f407cdb50da72 (patch) | |
tree | a6844d41dcfeac2e0c0d8bf433e112cd56d22fe7 /include | |
parent | 8b5c2b6260c0bb1233f605663bec9582b55d80c9 (diff) |
tcg: Add in_code_gen_buffer
Create a function to determine if a pointer is within the buffer.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'include')
-rw-r--r-- | include/tcg/tcg.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/tcg/tcg.h b/include/tcg/tcg.h index bb1e97b13b..ef571b6f3e 100644 --- a/include/tcg/tcg.h +++ b/include/tcg/tcg.h @@ -680,6 +680,17 @@ extern __thread TCGContext *tcg_ctx; extern void *tcg_code_gen_epilogue; extern TCGv_env cpu_env; +static inline bool in_code_gen_buffer(const void *p) +{ + const TCGContext *s = &tcg_init_ctx; + /* + * Much like it is valid to have a pointer to the byte past the + * end of an array (so long as you don't dereference it), allow + * a pointer to the byte past the end of the code gen buffer. + */ + return (size_t)(p - s->code_gen_buffer) <= s->code_gen_buffer_size; +} + static inline size_t temp_idx(TCGTemp *ts) { ptrdiff_t n = ts - tcg_ctx->temps; |