From 26a75d12d33ff80ee797ca32373f6333da4f194f Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Tue, 9 Mar 2021 23:30:38 -0600 Subject: tcg: Move MAX_CODE_GEN_BUFFER_SIZE to tcg-target.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove the ifdef ladder and move each define into the appropriate header file. Reviewed-by: Luis Pires Reviewed-by: Alex Bennée Signed-off-by: Richard Henderson --- 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/region.c | 33 +++++---------------------------- tcg/riscv/tcg-target.h | 1 + tcg/s390/tcg-target.h | 3 +++ tcg/sparc/tcg-target.h | 1 + tcg/tci/tcg-target.h | 1 + 10 files changed, 23 insertions(+), 28 deletions(-) diff --git a/tcg/aarch64/tcg-target.h b/tcg/aarch64/tcg-target.h index 5ec30db..ef55f7c 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 d6222ba..57fd0c0 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 b693d36..ac10066 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 c2c32fb..e81e824 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 d1339af..c13ed56 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/region.c b/tcg/region.c index 57069a3..13087aa 100644 --- a/tcg/region.c +++ b/tcg/region.c @@ -401,37 +401,14 @@ static size_t tcg_n_regions(unsigned max_cpus) /* * 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, MAX_CODE_GEN_BUFFER_SIZE, is defined in tcg-target.h. + * 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. */ #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 diff --git a/tcg/riscv/tcg-target.h b/tcg/riscv/tcg-target.h index 727c8df..87ea946 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 641464e..b04b72b 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 f66f5d0..86bb9a2 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 52af6d8..d0b5f3f 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 -- cgit v1.1