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[Qemu-ppc] [PATCH 2/7] PPC64: Add support for ldbrx and stdbrx instructi
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From: |
David Gibson |
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Subject: |
[Qemu-ppc] [PATCH 2/7] PPC64: Add support for ldbrx and stdbrx instructions |
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Date: |
Tue, 28 Feb 2012 14:18:08 +1100 |
From: Thomas Huth <address@hidden>
These instructions for loading and storing byte-swapped 64-bit values have
been introduced in PowerISA 2.06.
Signed-off-by: Thomas Huth <address@hidden>
Signed-off-by: David Gibson <address@hidden>
---
target-ppc/cpu.h | 4 ++-
target-ppc/translate.c | 52 +++++++++++++++++++++++++++++++++++-------
target-ppc/translate_init.c | 2 +-
3 files changed, 47 insertions(+), 11 deletions(-)
diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h
index fbcf488..036b3b6 100644
--- a/target-ppc/cpu.h
+++ b/target-ppc/cpu.h
@@ -1918,8 +1918,10 @@ enum {
PPC2_DFP = 0x0000000000000004ULL,
/* Embedded.Processor Control */
PPC2_PRCNTL = 0x0000000000000008ULL,
+ /* Byte-reversed, indexed, double-word load and store */
+ PPC2_DBRX = 0x0000000000000010ULL,
-#define PPC_TCG_INSNS2 (PPC2_BOOKE206 | PPC2_PRCNTL)
+#define PPC_TCG_INSNS2 (PPC2_BOOKE206 | PPC2_PRCNTL | PPC2_DBRX)
};
/*****************************************************************************/
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index b2780db..2728941 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -2656,7 +2656,7 @@ static void glue(gen_, name##ux)(DisasContext *ctx)
tcg_temp_free(EA); \
}
-#define GEN_LDX(name, ldop, opc2, opc3, type) \
+#define GEN_LDX_E(name, ldop, opc2, opc3, type, type2) \
static void glue(gen_, name##x)(DisasContext *ctx) \
{ \
TCGv EA; \
@@ -2666,6 +2666,8 @@ static void glue(gen_, name##x)(DisasContext *ctx)
\
gen_qemu_##ldop(ctx, cpu_gpr[rD(ctx->opcode)], EA); \
tcg_temp_free(EA); \
}
+#define GEN_LDX(name, ldop, opc2, opc3, type) \
+ GEN_LDX_E(name, ldop, opc2, opc3, type, PPC_NONE)
#define GEN_LDS(name, ldop, op, type) \
GEN_LD(name, ldop, op | 0x20, type); \
@@ -2799,8 +2801,8 @@ static void glue(gen_, name##ux)(DisasContext *ctx)
tcg_temp_free(EA); \
}
-#define GEN_STX(name, stop, opc2, opc3, type) \
-static void glue(gen_, name##x)(DisasContext *ctx)
\
+#define GEN_STX_E(name, stop, opc2, opc3, type, type2) \
+static void glue(gen_, name##x)(DisasContext *ctx) \
{ \
TCGv EA; \
gen_set_access_type(ctx, ACCESS_INT); \
@@ -2809,6 +2811,8 @@ static void glue(gen_, name##x)(DisasContext *ctx)
gen_qemu_##stop(ctx, cpu_gpr[rS(ctx->opcode)], EA); \
tcg_temp_free(EA); \
}
+#define GEN_STX(name, stop, opc2, opc3, type) \
+ GEN_STX_E(name, stop, opc2, opc3, type, PPC_NONE)
#define GEN_STS(name, stop, op, type) \
GEN_ST(name, stop, op | 0x20, type); \
@@ -2897,6 +2901,18 @@ static inline void gen_qemu_ld32ur(DisasContext *ctx,
TCGv arg1, TCGv arg2)
}
GEN_LDX(lwbr, ld32ur, 0x16, 0x10, PPC_INTEGER);
+#if defined(TARGET_PPC64)
+/* ldbrx */
+static inline void gen_qemu_ld64ur(DisasContext *ctx, TCGv arg1, TCGv arg2)
+{
+ tcg_gen_qemu_ld64(arg1, arg2, ctx->mem_idx);
+ if (likely(!ctx->le_mode)) {
+ tcg_gen_bswap64_tl(arg1, arg1);
+ }
+}
+GEN_LDX_E(ldbr, ld64ur, 0x14, 0x10, PPC_NONE, PPC2_DBRX);
+#endif /* TARGET_PPC64 */
+
/* sthbrx */
static inline void gen_qemu_st16r(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
@@ -2927,6 +2943,22 @@ static inline void gen_qemu_st32r(DisasContext *ctx,
TCGv arg1, TCGv arg2)
}
GEN_STX(stwbr, st32r, 0x16, 0x14, PPC_INTEGER);
+#if defined(TARGET_PPC64)
+/* stdbrx */
+static inline void gen_qemu_st64r(DisasContext *ctx, TCGv arg1, TCGv arg2)
+{
+ if (likely(!ctx->le_mode)) {
+ TCGv t0 = tcg_temp_new();
+ tcg_gen_bswap64_tl(t0, arg1);
+ tcg_gen_qemu_st64(t0, arg2, ctx->mem_idx);
+ tcg_temp_free(t0);
+ } else {
+ tcg_gen_qemu_st64(arg1, arg2, ctx->mem_idx);
+ }
+}
+GEN_STX_E(stdbr, st64r, 0x14, 0x14, PPC_NONE, PPC2_DBRX);
+#endif /* TARGET_PPC64 */
+
/*** Integer load and store multiple ***/
/* lmw */
@@ -8824,7 +8856,7 @@ GEN_FLOAT_B(neg, 0x08, 0x01, 0, PPC_FLOAT),
#undef GEN_LD
#undef GEN_LDU
#undef GEN_LDUX
-#undef GEN_LDX
+#undef GEN_LDX_E
#undef GEN_LDS
#define GEN_LD(name, ldop, opc, type) \
GEN_HANDLER(name, opc, 0xFF, 0xFF, 0x00000000, type),
@@ -8832,8 +8864,8 @@ GEN_HANDLER(name, opc, 0xFF, 0xFF, 0x00000000, type),
GEN_HANDLER(name##u, opc, 0xFF, 0xFF, 0x00000000, type),
#define GEN_LDUX(name, ldop, opc2, opc3, type) \
GEN_HANDLER(name##ux, 0x1F, opc2, opc3, 0x00000001, type),
-#define GEN_LDX(name, ldop, opc2, opc3, type) \
-GEN_HANDLER(name##x, 0x1F, opc2, opc3, 0x00000001, type),
+#define GEN_LDX_E(name, ldop, opc2, opc3, type, type2) \
+GEN_HANDLER_E(name##x, 0x1F, opc2, opc3, 0x00000001, type, type2),
#define GEN_LDS(name, ldop, op, type) \
GEN_LD(name, ldop, op | 0x20, type) \
GEN_LDU(name, ldop, op | 0x21, type) \
@@ -8849,6 +8881,7 @@ GEN_LDUX(lwa, ld32s, 0x15, 0x0B, PPC_64B)
GEN_LDX(lwa, ld32s, 0x15, 0x0A, PPC_64B)
GEN_LDUX(ld, ld64, 0x15, 0x01, PPC_64B)
GEN_LDX(ld, ld64, 0x15, 0x00, PPC_64B)
+GEN_LDX_E(ldbr, ld64ur, 0x14, 0x10, PPC_NONE, PPC2_DBRX)
#endif
GEN_LDX(lhbr, ld16ur, 0x16, 0x18, PPC_INTEGER)
GEN_LDX(lwbr, ld32ur, 0x16, 0x10, PPC_INTEGER)
@@ -8856,7 +8889,7 @@ GEN_LDX(lwbr, ld32ur, 0x16, 0x10, PPC_INTEGER)
#undef GEN_ST
#undef GEN_STU
#undef GEN_STUX
-#undef GEN_STX
+#undef GEN_STX_E
#undef GEN_STS
#define GEN_ST(name, stop, opc, type) \
GEN_HANDLER(name, opc, 0xFF, 0xFF, 0x00000000, type),
@@ -8864,8 +8897,8 @@ GEN_HANDLER(name, opc, 0xFF, 0xFF, 0x00000000, type),
GEN_HANDLER(stop##u, opc, 0xFF, 0xFF, 0x00000000, type),
#define GEN_STUX(name, stop, opc2, opc3, type) \
GEN_HANDLER(name##ux, 0x1F, opc2, opc3, 0x00000001, type),
-#define GEN_STX(name, stop, opc2, opc3, type) \
-GEN_HANDLER(name##x, 0x1F, opc2, opc3, 0x00000001, type),
+#define GEN_STX_E(name, stop, opc2, opc3, type, type2) \
+GEN_HANDLER_E(name##x, 0x1F, opc2, opc3, 0x00000001, type, type2),
#define GEN_STS(name, stop, op, type) \
GEN_ST(name, stop, op | 0x20, type) \
GEN_STU(name, stop, op | 0x21, type) \
@@ -8878,6 +8911,7 @@ GEN_STS(stw, st32, 0x04, PPC_INTEGER)
#if defined(TARGET_PPC64)
GEN_STUX(std, st64, 0x15, 0x05, PPC_64B)
GEN_STX(std, st64, 0x15, 0x04, PPC_64B)
+GEN_STX_E(stdbr, st64r, 0x14, 0x14, PPC_NONE, PPC2_DBRX)
#endif
GEN_STX(sthbr, st16r, 0x16, 0x1C, PPC_INTEGER)
GEN_STX(stwbr, st32r, 0x16, 0x14, PPC_INTEGER)
diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index 6253076..087f2f0 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -6571,7 +6571,7 @@ static void init_proc_970MP (CPUPPCState *env)
PPC_64B | PPC_ALTIVEC | \
PPC_SEGMENT_64B | PPC_SLBI | \
PPC_POPCNTB | PPC_POPCNTWD)
-#define POWERPC_INSNS2_POWER7 (PPC2_VSX | PPC2_DFP)
+#define POWERPC_INSNS2_POWER7 (PPC2_VSX | PPC2_DFP | PPC2_DBRX)
#define POWERPC_MSRM_POWER7 (0x800000000204FF36ULL)
#define POWERPC_MMU_POWER7 (POWERPC_MMU_2_06)
#define POWERPC_EXCP_POWER7 (POWERPC_EXCP_POWER7)
--
1.7.9
- [Qemu-ppc] [0/7] pseries and Power updates, David Gibson, 2012/02/27
- [Qemu-ppc] [PATCH 1/7] pseries: Don't try to munmap() a malloc()ed TCE table, David Gibson, 2012/02/27
- [Qemu-ppc] [PATCH 6/7] pseries: Remove PCI device from PCI host bridge code, David Gibson, 2012/02/27
- [Qemu-ppc] [PATCH 2/7] PPC64: Add support for ldbrx and stdbrx instructions,
David Gibson <=
- [Qemu-ppc] [PATCH 5/7] pseries: Remove unused constant from PCI code, David Gibson, 2012/02/27
- [Qemu-ppc] [PATCH 3/7] pseries: Add support for level interrupts to XICS, David Gibson, 2012/02/27
- [Qemu-ppc] [PATCH 4/7] pseries: Update SLOF firmware image, David Gibson, 2012/02/27
- [Qemu-ppc] [PATCH 7/7] pseries: Configure PCI bridge using properties, David Gibson, 2012/02/27