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[187.189.51.144]) by smtp.gmail.com with ESMTPSA id t2sm9337749qtd.13.2021.03.14.14.27.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 14 Mar 2021 14:27:48 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v2 20/29] tcg: Move in_code_gen_buffer and tests to region.c Date: Sun, 14 Mar 2021 15:27:15 -0600 Message-Id: <20210314212724.1917075-21-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210314212724.1917075-1-richard.henderson@linaro.org> References: <20210314212724.1917075-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::735; envelope-from=richard.henderson@linaro.org; helo=mail-qk1-x735.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: r.bolshakov@yadro.com, j@getutm.app Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Shortly, the full code_gen_buffer will only be visible to region.c, so move in_code_gen_buffer out-of-line. Move the debugging versions of tcg_splitwx_to_{rx,rw} to region.c as well, so that the compiler gets to see the implementation of in_code_gen_buffer. This leaves exactly one use of in_code_gen_buffer outside of region.c, in cpu_restore_state. Which, being on the exception path, is not performance critical. Signed-off-by: Richard Henderson --- include/tcg/tcg.h | 11 +---------- tcg/region.c | 34 ++++++++++++++++++++++++++++++++++ tcg/tcg.c | 23 ----------------------- 3 files changed, 35 insertions(+), 33 deletions(-) diff --git a/include/tcg/tcg.h b/include/tcg/tcg.h index a0122c0dd3..a19deb529f 100644 --- a/include/tcg/tcg.h +++ b/include/tcg/tcg.h @@ -696,16 +696,7 @@ extern const 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) -{ - 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; -} +bool in_code_gen_buffer(const void *p); #ifdef CONFIG_DEBUG_TCG const void *tcg_splitwx_to_rx(void *rw); diff --git a/tcg/region.c b/tcg/region.c index 45c1178815..bf4167e467 100644 --- a/tcg/region.c +++ b/tcg/region.c @@ -68,6 +68,40 @@ static struct tcg_region_state region; static void *region_trees; static size_t tree_size; +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; +} + +#ifdef CONFIG_DEBUG_TCG +const void *tcg_splitwx_to_rx(void *rw) +{ + /* Pass NULL pointers unchanged. */ + if (rw) { + g_assert(in_code_gen_buffer(rw)); + rw += tcg_splitwx_diff; + } + return rw; +} + +void *tcg_splitwx_to_rw(const void *rx) +{ + /* Pass NULL pointers unchanged. */ + if (rx) { + rx -= tcg_splitwx_diff; + /* Assert that we end with a pointer in the rw region. */ + g_assert(in_code_gen_buffer(rx)); + } + return (void *)rx; +} +#endif /* CONFIG_DEBUG_TCG */ + /* compare a pointer @ptr and a tb_tc @s */ static int ptr_cmp_tb_tc(const void *ptr, const struct tb_tc *s) { diff --git a/tcg/tcg.c b/tcg/tcg.c index a82d3a0861..65f9cf01d5 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -416,29 +416,6 @@ static const TCGTargetOpDef constraint_sets[] = { #include "tcg-target.c.inc" -#ifdef CONFIG_DEBUG_TCG -const void *tcg_splitwx_to_rx(void *rw) -{ - /* Pass NULL pointers unchanged. */ - if (rw) { - g_assert(in_code_gen_buffer(rw)); - rw += tcg_splitwx_diff; - } - return rw; -} - -void *tcg_splitwx_to_rw(const void *rx) -{ - /* Pass NULL pointers unchanged. */ - if (rx) { - rx -= tcg_splitwx_diff; - /* Assert that we end with a pointer in the rw region. */ - g_assert(in_code_gen_buffer(rx)); - } - return (void *)rx; -} -#endif /* CONFIG_DEBUG_TCG */ - static void alloc_tcg_plugin_context(TCGContext *s) { #ifdef CONFIG_PLUGIN -- 2.25.1