diff mbox series

[16/26] tcg: Move MAX_CODE_GEN_BUFFER_SIZE to tcg-target.h

Message ID 20210311002156.253711-17-richard.henderson@linaro.org
State New
Headers show
Series tcg: Workaround macOS 11.2 mprotect bug | expand

Commit Message

Richard Henderson March 11, 2021, 12:21 a.m. UTC
Remove the ifdef ladder and move each define into the
appropriate header file.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/aarch64/tcg-target.h |  1 +
 tcg/arm/tcg-target.h     |  1 +
 tcg/i386/tcg-target.h    |  2 ++
 tcg/mips/tcg-target.h    |  6 ++++++
 tcg/ppc/tcg-target.h     |  2 ++
 tcg/riscv/tcg-target.h   |  1 +
 tcg/s390/tcg-target.h    |  3 +++
 tcg/sparc/tcg-target.h   |  1 +
 tcg/tci/tcg-target.h     |  1 +
 tcg/region.c             | 32 ++++++--------------------------
 10 files changed, 24 insertions(+), 26 deletions(-)

Comments

BALATON Zoltan March 11, 2021, 12:42 a.m. UTC | #1
On Wed, 10 Mar 2021, Richard Henderson wrote:
> Remove the ifdef ladder and move each define into the
> appropriate header file.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
> tcg/aarch64/tcg-target.h |  1 +
> tcg/arm/tcg-target.h     |  1 +
> tcg/i386/tcg-target.h    |  2 ++
> tcg/mips/tcg-target.h    |  6 ++++++
> tcg/ppc/tcg-target.h     |  2 ++
> tcg/riscv/tcg-target.h   |  1 +
> tcg/s390/tcg-target.h    |  3 +++
> tcg/sparc/tcg-target.h   |  1 +
> tcg/tci/tcg-target.h     |  1 +
> tcg/region.c             | 32 ++++++--------------------------
> 10 files changed, 24 insertions(+), 26 deletions(-)
>
> diff --git a/tcg/aarch64/tcg-target.h b/tcg/aarch64/tcg-target.h
> index 5ec30dba25..ef55f7c185 100644
> --- a/tcg/aarch64/tcg-target.h
> +++ b/tcg/aarch64/tcg-target.h
> @@ -15,6 +15,7 @@
>
> #define TCG_TARGET_INSN_UNIT_SIZE  4
> #define TCG_TARGET_TLB_DISPLACEMENT_BITS 24
> +#define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
> #undef TCG_TARGET_STACK_GROWSUP
>
> typedef enum {
> diff --git a/tcg/arm/tcg-target.h b/tcg/arm/tcg-target.h
> index 8d1fee6327..b9a85d0f83 100644
> --- a/tcg/arm/tcg-target.h
> +++ b/tcg/arm/tcg-target.h
> @@ -60,6 +60,7 @@ extern int arm_arch;
> #undef TCG_TARGET_STACK_GROWSUP
> #define TCG_TARGET_INSN_UNIT_SIZE 4
> #define TCG_TARGET_TLB_DISPLACEMENT_BITS 16
> +#define MAX_CODE_GEN_BUFFER_SIZE  UINT32_MAX
>
> typedef enum {
>     TCG_REG_R0 = 0,
> diff --git a/tcg/i386/tcg-target.h b/tcg/i386/tcg-target.h
> index b693d3692d..ac10066c3e 100644
> --- a/tcg/i386/tcg-target.h
> +++ b/tcg/i386/tcg-target.h
> @@ -31,9 +31,11 @@
> #ifdef __x86_64__
> # define TCG_TARGET_REG_BITS  64
> # define TCG_TARGET_NB_REGS   32
> +# define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
> #else
> # define TCG_TARGET_REG_BITS  32
> # define TCG_TARGET_NB_REGS   24
> +# define MAX_CODE_GEN_BUFFER_SIZE  UINT32_MAX
> #endif
>
> typedef enum {
> diff --git a/tcg/mips/tcg-target.h b/tcg/mips/tcg-target.h
> index c2c32fb38f..e81e824cab 100644
> --- a/tcg/mips/tcg-target.h
> +++ b/tcg/mips/tcg-target.h
> @@ -39,6 +39,12 @@
> #define TCG_TARGET_TLB_DISPLACEMENT_BITS 16
> #define TCG_TARGET_NB_REGS 32
>
> +/*
> + * We have a 256MB branch region, but leave room to make sure the
> + * main executable is also within that region.
> + */
> +#define MAX_CODE_GEN_BUFFER_SIZE  (128 * MiB)
> +
> typedef enum {
>     TCG_REG_ZERO = 0,
>     TCG_REG_AT,
> diff --git a/tcg/ppc/tcg-target.h b/tcg/ppc/tcg-target.h
> index d1339afc66..c13ed5640a 100644
> --- a/tcg/ppc/tcg-target.h
> +++ b/tcg/ppc/tcg-target.h
> @@ -27,8 +27,10 @@
>
> #ifdef _ARCH_PPC64
> # define TCG_TARGET_REG_BITS  64
> +# define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
> #else
> # define TCG_TARGET_REG_BITS  32
> +# define MAX_CODE_GEN_BUFFER_SIZE  (32 * MiB)
> #endif
>
> #define TCG_TARGET_NB_REGS 64
> diff --git a/tcg/riscv/tcg-target.h b/tcg/riscv/tcg-target.h
> index 727c8df418..87ea94666b 100644
> --- a/tcg/riscv/tcg-target.h
> +++ b/tcg/riscv/tcg-target.h
> @@ -34,6 +34,7 @@
> #define TCG_TARGET_INSN_UNIT_SIZE 4
> #define TCG_TARGET_TLB_DISPLACEMENT_BITS 20
> #define TCG_TARGET_NB_REGS 32
> +#define MAX_CODE_GEN_BUFFER_SIZE  ((size_t)-1)
>
> typedef enum {
>     TCG_REG_ZERO,
> diff --git a/tcg/s390/tcg-target.h b/tcg/s390/tcg-target.h
> index 641464eea4..b04b72b7eb 100644
> --- a/tcg/s390/tcg-target.h
> +++ b/tcg/s390/tcg-target.h
> @@ -28,6 +28,9 @@
> #define TCG_TARGET_INSN_UNIT_SIZE 2
> #define TCG_TARGET_TLB_DISPLACEMENT_BITS 19
>
> +/* We have a +- 4GB range on the branches; leave some slop.  */
> +#define MAX_CODE_GEN_BUFFER_SIZE  (3 * GiB)
> +
> typedef enum TCGReg {
>     TCG_REG_R0 = 0,
>     TCG_REG_R1,
> diff --git a/tcg/sparc/tcg-target.h b/tcg/sparc/tcg-target.h
> index f66f5d07dc..86bb9a2d39 100644
> --- a/tcg/sparc/tcg-target.h
> +++ b/tcg/sparc/tcg-target.h
> @@ -30,6 +30,7 @@
> #define TCG_TARGET_INSN_UNIT_SIZE 4
> #define TCG_TARGET_TLB_DISPLACEMENT_BITS 32
> #define TCG_TARGET_NB_REGS 32
> +#define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
>
> typedef enum {
>     TCG_REG_G0 = 0,
> diff --git a/tcg/tci/tcg-target.h b/tcg/tci/tcg-target.h
> index 9c0021a26f..03cf527cb4 100644
> --- a/tcg/tci/tcg-target.h
> +++ b/tcg/tci/tcg-target.h
> @@ -43,6 +43,7 @@
> #define TCG_TARGET_INTERPRETER 1
> #define TCG_TARGET_INSN_UNIT_SIZE 1
> #define TCG_TARGET_TLB_DISPLACEMENT_BITS 32
> +#define MAX_CODE_GEN_BUFFER_SIZE  ((size_t)-1)
>
> #if UINTPTR_MAX == UINT32_MAX
> # define TCG_TARGET_REG_BITS 32
> diff --git a/tcg/region.c b/tcg/region.c
> index e3fbf6a7e7..8fba0724e5 100644
> --- a/tcg/region.c
> +++ b/tcg/region.c
> @@ -398,34 +398,14 @@ static size_t tcg_n_regions(unsigned max_cpus)
> #endif
> }
>
> -/* Minimum size of the code gen buffer.  This number is randomly chosen,
> -   but not so small that we can't have a fair number of TB's live.  */
> +/*
> + * Minimum size of the code gen buffer.  This number is randomly chosen,
> + * but not so small that we can't have a fair number of TB's live.
> + *
> + * Maximum size is defined in tcg-target.h.
> + */
> #define MIN_CODE_GEN_BUFFER_SIZE     (1 * MiB)
>
> -/* Maximum size of the code gen buffer we'd like to use.  Unless otherwise
> -   indicated, this is constrained by the range of direct branches on the
> -   host cpu, as used by the TCG implementation of goto_tb.  */

This comment about constraints seems to have been lost. Should it be 
preserved above?

Regards,
BALATON Zoltan

> -#if defined(__x86_64__)
> -# define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
> -#elif defined(__sparc__)
> -# define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
> -#elif defined(__powerpc64__)
> -# define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
> -#elif defined(__powerpc__)
> -# define MAX_CODE_GEN_BUFFER_SIZE  (32 * MiB)
> -#elif defined(__aarch64__)
> -# define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
> -#elif defined(__s390x__)
> -  /* We have a +- 4GB range on the branches; leave some slop.  */
> -# define MAX_CODE_GEN_BUFFER_SIZE  (3 * GiB)
> -#elif defined(__mips__)
> -  /* We have a 256MB branch region, but leave room to make sure the
> -     main executable is also within that region.  */
> -# define MAX_CODE_GEN_BUFFER_SIZE  (128 * MiB)
> -#else
> -# define MAX_CODE_GEN_BUFFER_SIZE  ((size_t)-1)
> -#endif
> -
> #if TCG_TARGET_REG_BITS == 32
> #define DEFAULT_CODE_GEN_BUFFER_SIZE_1 (32 * MiB)
> #ifdef CONFIG_USER_ONLY
>
Richard Henderson March 13, 2021, 4 p.m. UTC | #2
On 3/10/21 6:42 PM, BALATON Zoltan wrote:
>> -/* Minimum size of the code gen buffer.  This number is randomly chosen,
>> -   but not so small that we can't have a fair number of TB's live.  */
>> +/*
>> + * Minimum size of the code gen buffer.  This number is randomly chosen,
>> + * but not so small that we can't have a fair number of TB's live.
>> + *
>> + * Maximum size is defined in tcg-target.h.
>> + */
>> #define MIN_CODE_GEN_BUFFER_SIZE     (1 * MiB)
>>
>> -/* Maximum size of the code gen buffer we'd like to use.  Unless otherwise
>> -   indicated, this is constrained by the range of direct branches on the
>> -   host cpu, as used by the TCG implementation of goto_tb.  */
> 
> This comment about constraints seems to have been lost. Should it be preserved 
> above?

Done.


r~
diff mbox series

Patch

diff --git a/tcg/aarch64/tcg-target.h b/tcg/aarch64/tcg-target.h
index 5ec30dba25..ef55f7c185 100644
--- a/tcg/aarch64/tcg-target.h
+++ b/tcg/aarch64/tcg-target.h
@@ -15,6 +15,7 @@ 
 
 #define TCG_TARGET_INSN_UNIT_SIZE  4
 #define TCG_TARGET_TLB_DISPLACEMENT_BITS 24
+#define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
 #undef TCG_TARGET_STACK_GROWSUP
 
 typedef enum {
diff --git a/tcg/arm/tcg-target.h b/tcg/arm/tcg-target.h
index 8d1fee6327..b9a85d0f83 100644
--- a/tcg/arm/tcg-target.h
+++ b/tcg/arm/tcg-target.h
@@ -60,6 +60,7 @@  extern int arm_arch;
 #undef TCG_TARGET_STACK_GROWSUP
 #define TCG_TARGET_INSN_UNIT_SIZE 4
 #define TCG_TARGET_TLB_DISPLACEMENT_BITS 16
+#define MAX_CODE_GEN_BUFFER_SIZE  UINT32_MAX
 
 typedef enum {
     TCG_REG_R0 = 0,
diff --git a/tcg/i386/tcg-target.h b/tcg/i386/tcg-target.h
index b693d3692d..ac10066c3e 100644
--- a/tcg/i386/tcg-target.h
+++ b/tcg/i386/tcg-target.h
@@ -31,9 +31,11 @@ 
 #ifdef __x86_64__
 # define TCG_TARGET_REG_BITS  64
 # define TCG_TARGET_NB_REGS   32
+# define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
 #else
 # define TCG_TARGET_REG_BITS  32
 # define TCG_TARGET_NB_REGS   24
+# define MAX_CODE_GEN_BUFFER_SIZE  UINT32_MAX
 #endif
 
 typedef enum {
diff --git a/tcg/mips/tcg-target.h b/tcg/mips/tcg-target.h
index c2c32fb38f..e81e824cab 100644
--- a/tcg/mips/tcg-target.h
+++ b/tcg/mips/tcg-target.h
@@ -39,6 +39,12 @@ 
 #define TCG_TARGET_TLB_DISPLACEMENT_BITS 16
 #define TCG_TARGET_NB_REGS 32
 
+/*
+ * We have a 256MB branch region, but leave room to make sure the
+ * main executable is also within that region.
+ */
+#define MAX_CODE_GEN_BUFFER_SIZE  (128 * MiB)
+
 typedef enum {
     TCG_REG_ZERO = 0,
     TCG_REG_AT,
diff --git a/tcg/ppc/tcg-target.h b/tcg/ppc/tcg-target.h
index d1339afc66..c13ed5640a 100644
--- a/tcg/ppc/tcg-target.h
+++ b/tcg/ppc/tcg-target.h
@@ -27,8 +27,10 @@ 
 
 #ifdef _ARCH_PPC64
 # define TCG_TARGET_REG_BITS  64
+# define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
 #else
 # define TCG_TARGET_REG_BITS  32
+# define MAX_CODE_GEN_BUFFER_SIZE  (32 * MiB)
 #endif
 
 #define TCG_TARGET_NB_REGS 64
diff --git a/tcg/riscv/tcg-target.h b/tcg/riscv/tcg-target.h
index 727c8df418..87ea94666b 100644
--- a/tcg/riscv/tcg-target.h
+++ b/tcg/riscv/tcg-target.h
@@ -34,6 +34,7 @@ 
 #define TCG_TARGET_INSN_UNIT_SIZE 4
 #define TCG_TARGET_TLB_DISPLACEMENT_BITS 20
 #define TCG_TARGET_NB_REGS 32
+#define MAX_CODE_GEN_BUFFER_SIZE  ((size_t)-1)
 
 typedef enum {
     TCG_REG_ZERO,
diff --git a/tcg/s390/tcg-target.h b/tcg/s390/tcg-target.h
index 641464eea4..b04b72b7eb 100644
--- a/tcg/s390/tcg-target.h
+++ b/tcg/s390/tcg-target.h
@@ -28,6 +28,9 @@ 
 #define TCG_TARGET_INSN_UNIT_SIZE 2
 #define TCG_TARGET_TLB_DISPLACEMENT_BITS 19
 
+/* We have a +- 4GB range on the branches; leave some slop.  */
+#define MAX_CODE_GEN_BUFFER_SIZE  (3 * GiB)
+
 typedef enum TCGReg {
     TCG_REG_R0 = 0,
     TCG_REG_R1,
diff --git a/tcg/sparc/tcg-target.h b/tcg/sparc/tcg-target.h
index f66f5d07dc..86bb9a2d39 100644
--- a/tcg/sparc/tcg-target.h
+++ b/tcg/sparc/tcg-target.h
@@ -30,6 +30,7 @@ 
 #define TCG_TARGET_INSN_UNIT_SIZE 4
 #define TCG_TARGET_TLB_DISPLACEMENT_BITS 32
 #define TCG_TARGET_NB_REGS 32
+#define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
 
 typedef enum {
     TCG_REG_G0 = 0,
diff --git a/tcg/tci/tcg-target.h b/tcg/tci/tcg-target.h
index 9c0021a26f..03cf527cb4 100644
--- a/tcg/tci/tcg-target.h
+++ b/tcg/tci/tcg-target.h
@@ -43,6 +43,7 @@ 
 #define TCG_TARGET_INTERPRETER 1
 #define TCG_TARGET_INSN_UNIT_SIZE 1
 #define TCG_TARGET_TLB_DISPLACEMENT_BITS 32
+#define MAX_CODE_GEN_BUFFER_SIZE  ((size_t)-1)
 
 #if UINTPTR_MAX == UINT32_MAX
 # define TCG_TARGET_REG_BITS 32
diff --git a/tcg/region.c b/tcg/region.c
index e3fbf6a7e7..8fba0724e5 100644
--- a/tcg/region.c
+++ b/tcg/region.c
@@ -398,34 +398,14 @@  static size_t tcg_n_regions(unsigned max_cpus)
 #endif
 }
 
-/* Minimum size of the code gen buffer.  This number is randomly chosen,
-   but not so small that we can't have a fair number of TB's live.  */
+/*
+ * Minimum size of the code gen buffer.  This number is randomly chosen,
+ * but not so small that we can't have a fair number of TB's live.
+ *
+ * Maximum size is defined in tcg-target.h.
+ */
 #define MIN_CODE_GEN_BUFFER_SIZE     (1 * MiB)
 
-/* Maximum size of the code gen buffer we'd like to use.  Unless otherwise
-   indicated, this is constrained by the range of direct branches on the
-   host cpu, as used by the TCG implementation of goto_tb.  */
-#if defined(__x86_64__)
-# define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
-#elif defined(__sparc__)
-# define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
-#elif defined(__powerpc64__)
-# define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
-#elif defined(__powerpc__)
-# define MAX_CODE_GEN_BUFFER_SIZE  (32 * MiB)
-#elif defined(__aarch64__)
-# define MAX_CODE_GEN_BUFFER_SIZE  (2 * GiB)
-#elif defined(__s390x__)
-  /* We have a +- 4GB range on the branches; leave some slop.  */
-# define MAX_CODE_GEN_BUFFER_SIZE  (3 * GiB)
-#elif defined(__mips__)
-  /* We have a 256MB branch region, but leave room to make sure the
-     main executable is also within that region.  */
-# define MAX_CODE_GEN_BUFFER_SIZE  (128 * MiB)
-#else
-# define MAX_CODE_GEN_BUFFER_SIZE  ((size_t)-1)
-#endif
-
 #if TCG_TARGET_REG_BITS == 32
 #define DEFAULT_CODE_GEN_BUFFER_SIZE_1 (32 * MiB)
 #ifdef CONFIG_USER_ONLY