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tcg: add TCG_TARGET_TLB_DISPLACEMENT_BITS

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This will be used to size the TLB when more than 8 MMU modes are
used by the target.  Limitations come from the limited size of
the immediate fields (which sometimes, as in the case of Aarch64,
extend to instructions that shift the immediate).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1424436345-37924-2-git-send-email-pbonzini@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Paolo Bonzini 2015-05-05 09:18:22 +02:00 committed by Alexander Graf
parent 5a58e884d1
commit 006f8638c6
9 changed files with 10 additions and 0 deletions
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1
tcg/aarch64/tcg-target.h
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@ -14,6 +14,7 @@
#define TCG_TARGET_AARCH64 1
#define TCG_TARGET_INSN_UNIT_SIZE 4
#define TCG_TARGET_TLB_DISPLACEMENT_BITS 24
#undef TCG_TARGET_STACK_GROWSUP
typedef enum {

1
tcg/arm/tcg-target.h
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@ -27,6 +27,7 @@
#undef TCG_TARGET_STACK_GROWSUP
#define TCG_TARGET_INSN_UNIT_SIZE 4
#define TCG_TARGET_TLB_DISPLACEMENT_BITS 16
typedef enum {
TCG_REG_R0 = 0,

1
tcg/i386/tcg-target.h
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@ -25,6 +25,7 @@
#define TCG_TARGET_I386 1
#define TCG_TARGET_INSN_UNIT_SIZE 1
#define TCG_TARGET_TLB_DISPLACEMENT_BITS 31
#ifdef __x86_64__
# define TCG_TARGET_REG_BITS 64

2
tcg/ia64/tcg-target.h
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@ -26,6 +26,8 @@
#define TCG_TARGET_IA64 1
#define TCG_TARGET_INSN_UNIT_SIZE 16
#define TCG_TARGET_TLB_DISPLACEMENT_BITS 21
typedef struct {
uint64_t lo __attribute__((aligned(16)));
uint64_t hi;

1
tcg/mips/tcg-target.h
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@ -27,6 +27,7 @@
#define TCG_TARGET_MIPS 1
#define TCG_TARGET_INSN_UNIT_SIZE 4
#define TCG_TARGET_TLB_DISPLACEMENT_BITS 16
#define TCG_TARGET_NB_REGS 32
typedef enum {

1
tcg/ppc/tcg-target.h
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@ -32,6 +32,7 @@
#define TCG_TARGET_NB_REGS 32
#define TCG_TARGET_INSN_UNIT_SIZE 4
#define TCG_TARGET_TLB_DISPLACEMENT_BITS 16
typedef enum {
TCG_REG_R0, TCG_REG_R1, TCG_REG_R2, TCG_REG_R3,

1
tcg/s390/tcg-target.h
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@ -25,6 +25,7 @@
#define TCG_TARGET_S390 1
#define TCG_TARGET_INSN_UNIT_SIZE 2
#define TCG_TARGET_TLB_DISPLACEMENT_BITS 19
typedef enum TCGReg {
TCG_REG_R0 = 0,

1
tcg/sparc/tcg-target.h
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@ -27,6 +27,7 @@
#define TCG_TARGET_REG_BITS 64
#define TCG_TARGET_INSN_UNIT_SIZE 4
#define TCG_TARGET_TLB_DISPLACEMENT_BITS 32
#define TCG_TARGET_NB_REGS 32
typedef enum {

1
tcg/tci/tcg-target.h
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@ -44,6 +44,7 @@
#define TCG_TARGET_INTERPRETER 1
#define TCG_TARGET_INSN_UNIT_SIZE 1
#define TCG_TARGET_TLB_DISPLACEMENT_BITS 32
#if UINTPTR_MAX == UINT32_MAX
# define TCG_TARGET_REG_BITS 32