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| author | Richard Henderson <richard.henderson@linaro.org> | 2020-10-28 12:05:44 -0700 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2021-01-07 05:09:41 -1000 |
| commit | db0c51a380394b21b33a6294367aff03ab06b286 (patch) | |
| tree | 532b0abe24deda387ecdc065461dd698967d39ea /include/tcg/tcg.h | |
| parent | 4846cd37df83b24e65a42bb50e5f407cdb50da72 (diff) | |
| download | qemu-db0c51a380394b21b33a6294367aff03ab06b286.zip qemu-db0c51a380394b21b33a6294367aff03ab06b286.tar.gz qemu-db0c51a380394b21b33a6294367aff03ab06b286.tar.bz2 | |
tcg: Introduce tcg_splitwx_to_{rx,rw}
Add two helper functions, using a global variable to hold
the displacement. The displacement is currently always 0,
so no change in behaviour.
Begin using the functions in tcg common code only.
Reviewed-by: Joelle van Dyne <j@getutm.app>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'include/tcg/tcg.h')
| -rw-r--r-- | include/tcg/tcg.h | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/include/tcg/tcg.h b/include/tcg/tcg.h index ef571b6..b769e86 100644 --- a/include/tcg/tcg.h +++ b/include/tcg/tcg.h @@ -678,6 +678,7 @@ struct TCGContext { extern TCGContext tcg_init_ctx; extern __thread TCGContext *tcg_ctx; extern void *tcg_code_gen_epilogue; +extern uintptr_t tcg_splitwx_diff; extern TCGv_env cpu_env; static inline bool in_code_gen_buffer(const void *p) @@ -691,6 +692,21 @@ static inline bool in_code_gen_buffer(const void *p) return (size_t)(p - s->code_gen_buffer) <= s->code_gen_buffer_size; } +#ifdef CONFIG_DEBUG_TCG +const void *tcg_splitwx_to_rx(void *rw); +void *tcg_splitwx_to_rw(const void *rx); +#else +static inline const void *tcg_splitwx_to_rx(void *rw) +{ + return rw ? rw + tcg_splitwx_diff : NULL; +} + +static inline void *tcg_splitwx_to_rw(const void *rx) +{ + return rx ? (void *)rx - tcg_splitwx_diff : NULL; +} +#endif + static inline size_t temp_idx(TCGTemp *ts) { ptrdiff_t n = ts - tcg_ctx->temps; @@ -1111,7 +1127,7 @@ static inline TCGLabel *arg_label(TCGArg i) * correct result. */ -static inline ptrdiff_t tcg_ptr_byte_diff(void *a, void *b) +static inline ptrdiff_t tcg_ptr_byte_diff(const void *a, const void *b) { return a - b; } @@ -1125,9 +1141,9 @@ static inline ptrdiff_t tcg_ptr_byte_diff(void *a, void *b) * to the destination address. */ -static inline ptrdiff_t tcg_pcrel_diff(TCGContext *s, void *target) +static inline ptrdiff_t tcg_pcrel_diff(TCGContext *s, const void *target) { - return tcg_ptr_byte_diff(target, s->code_ptr); + return tcg_ptr_byte_diff(target, tcg_splitwx_to_rx(s->code_ptr)); } /** @@ -1233,9 +1249,9 @@ static inline unsigned get_mmuidx(TCGMemOpIdx oi) #define TB_EXIT_REQUESTED 3 #ifdef CONFIG_TCG_INTERPRETER -uintptr_t tcg_qemu_tb_exec(CPUArchState *env, void *tb_ptr); +uintptr_t tcg_qemu_tb_exec(CPUArchState *env, const void *tb_ptr); #else -typedef uintptr_t tcg_prologue_fn(CPUArchState *env, void *tb_ptr); +typedef uintptr_t tcg_prologue_fn(CPUArchState *env, const void *tb_ptr); extern tcg_prologue_fn *tcg_qemu_tb_exec; #endif |