From f6548c0a4b751852b9dcb341e3974e049a45a518 Mon Sep 17 00:00:00 2001 From: malc Date: Sat, 18 Jul 2009 10:08:40 +0400 Subject: PPC 32/64 GUEST_BASE support Signed-off-by: malc --- tcg/ppc/tcg-target.c | 84 +++++++++++++++++++++++++++++++++++++++------------- tcg/ppc/tcg-target.h | 2 ++ 2 files changed, 65 insertions(+), 21 deletions(-) (limited to 'tcg/ppc') diff --git a/tcg/ppc/tcg-target.c b/tcg/ppc/tcg-target.c index 04700f94f..5c64a13c1 100644 --- a/tcg/ppc/tcg-target.c +++ b/tcg/ppc/tcg-target.c @@ -42,6 +42,16 @@ static uint8_t *tb_ret_addr; #define ADDEND_OFFSET 4 #endif +#ifndef GUEST_BASE +#define GUEST_BASE 0 +#endif + +#ifdef CONFIG_USE_GUEST_BASE +#define TCG_GUEST_BASE_REG 30 +#else +#define TCG_GUEST_BASE_REG 0 +#endif + #ifndef NDEBUG static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { "r0", @@ -501,7 +511,7 @@ static void *qemu_st_helpers[4] = { static void tcg_out_qemu_ld (TCGContext *s, const TCGArg *args, int opc) { - int addr_reg, data_reg, data_reg2, r0, r1, mem_index, s_bits, bswap; + int addr_reg, data_reg, data_reg2, r0, r1, rbase, mem_index, s_bits, bswap; #ifdef CONFIG_SOFTMMU int r2; void *label1_ptr, *label2_ptr; @@ -526,6 +536,7 @@ static void tcg_out_qemu_ld (TCGContext *s, const TCGArg *args, int opc) r0 = 3; r1 = 4; r2 = 0; + rbase = 0; tcg_out32 (s, (RLWINM | RA (r0) @@ -631,6 +642,7 @@ static void tcg_out_qemu_ld (TCGContext *s, const TCGArg *args, int opc) #else /* !CONFIG_SOFTMMU */ r0 = addr_reg; r1 = 3; + rbase = GUEST_BASE ? TCG_GUEST_BASE_REG : 0; #endif #ifdef TARGET_WORDS_BIGENDIAN @@ -638,37 +650,47 @@ static void tcg_out_qemu_ld (TCGContext *s, const TCGArg *args, int opc) #else bswap = 1; #endif + switch (opc) { default: case 0: - tcg_out32 (s, LBZ | RT (data_reg) | RA (r0)); + tcg_out32 (s, LBZX | TAB (data_reg, rbase, r0)); break; case 0|4: - tcg_out32 (s, LBZ | RT (data_reg) | RA (r0)); + tcg_out32 (s, LBZX | TAB (data_reg, rbase, r0)); tcg_out32 (s, EXTSB | RA (data_reg) | RS (data_reg)); break; case 1: - if (bswap) tcg_out32 (s, LHBRX | RT (data_reg) | RB (r0)); - else tcg_out32 (s, LHZ | RT (data_reg) | RA (r0)); + if (bswap) + tcg_out32 (s, LHBRX | TAB (data_reg, rbase, r0)); + else + tcg_out32 (s, LHZX | TAB (data_reg, rbase, r0)); break; case 1|4: if (bswap) { - tcg_out32 (s, LHBRX | RT (data_reg) | RB (r0)); + tcg_out32 (s, LHBRX | TAB (data_reg, rbase, r0)); tcg_out32 (s, EXTSH | RA (data_reg) | RS (data_reg)); } - else tcg_out32 (s, LHA | RT (data_reg) | RA (r0)); + else tcg_out32 (s, LHAX | TAB (data_reg, rbase, r0)); break; case 2: - if (bswap) tcg_out32 (s, LWBRX | RT (data_reg) | RB (r0)); - else tcg_out32 (s, LWZ | RT (data_reg)| RA (r0)); + if (bswap) + tcg_out32 (s, LWBRX | TAB (data_reg, rbase, r0)); + else + tcg_out32 (s, LWZX | TAB (data_reg, rbase, r0)); break; case 3: if (bswap) { - tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4); - tcg_out32 (s, LWBRX | RT (data_reg) | RB (r0)); - tcg_out32 (s, LWBRX | RT (data_reg2) | RB (r1)); + tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4); + tcg_out32 (s, LWBRX | TAB (data_reg, rbase, r0)); + tcg_out32 (s, LWBRX | TAB (data_reg2, rbase, r1)); } else { +#ifdef CONFIG_USE_GUEST_BASE + tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4); + tcg_out32 (s, LWZX | TAB (data_reg2, rbase, r0)); + tcg_out32 (s, LWZX | TAB (data_reg, rbase, r1)); +#else if (r0 == data_reg2) { tcg_out32 (s, LWZ | RT (0) | RA (r0)); tcg_out32 (s, LWZ | RT (data_reg) | RA (r0) | 4); @@ -678,6 +700,7 @@ static void tcg_out_qemu_ld (TCGContext *s, const TCGArg *args, int opc) tcg_out32 (s, LWZ | RT (data_reg2) | RA (r0)); tcg_out32 (s, LWZ | RT (data_reg) | RA (r0) | 4); } +#endif } break; } @@ -689,7 +712,7 @@ static void tcg_out_qemu_ld (TCGContext *s, const TCGArg *args, int opc) static void tcg_out_qemu_st (TCGContext *s, const TCGArg *args, int opc) { - int addr_reg, r0, r1, data_reg, data_reg2, mem_index, bswap; + int addr_reg, r0, r1, data_reg, data_reg2, mem_index, bswap, rbase; #ifdef CONFIG_SOFTMMU int r2, ir; void *label1_ptr, *label2_ptr; @@ -713,6 +736,7 @@ static void tcg_out_qemu_st (TCGContext *s, const TCGArg *args, int opc) r0 = 3; r1 = 4; r2 = 0; + rbase = 0; tcg_out32 (s, (RLWINM | RA (r0) @@ -819,8 +843,9 @@ static void tcg_out_qemu_st (TCGContext *s, const TCGArg *args, int opc) /* r0 = env->tlb_table[mem_index][index].addend + addr */ #else /* !CONFIG_SOFTMMU */ - r1 = 3; r0 = addr_reg; + r1 = 3; + rbase = GUEST_BASE ? rbase : 0; #endif #ifdef TARGET_WORDS_BIGENDIAN @@ -830,25 +855,35 @@ static void tcg_out_qemu_st (TCGContext *s, const TCGArg *args, int opc) #endif switch (opc) { case 0: - tcg_out32 (s, STB | RS (data_reg) | RA (r0)); + tcg_out32 (s, STBX | SAB (data_reg, rbase, r0)); break; case 1: - if (bswap) tcg_out32 (s, STHBRX | RS (data_reg) | RA (0) | RB (r0)); - else tcg_out32 (s, STH | RS (data_reg) | RA (r0)); + if (bswap) + tcg_out32 (s, STHBRX | SAB (data_reg, rbase, r0)); + else + tcg_out32 (s, STHX | SAB (data_reg, rbase, r0)); break; case 2: - if (bswap) tcg_out32 (s, STWBRX | RS (data_reg) | RA (0) | RB (r0)); - else tcg_out32 (s, STW | RS (data_reg) | RA (r0)); + if (bswap) + tcg_out32 (s, STWBRX | SAB (data_reg, rbase, r0)); + else + tcg_out32 (s, STWX | SAB (data_reg, rbase, r0)); break; case 3: if (bswap) { tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4); - tcg_out32 (s, STWBRX | RS (data_reg) | RA (0) | RB (r0)); - tcg_out32 (s, STWBRX | RS (data_reg2) | RA (0) | RB (r1)); + tcg_out32 (s, STWBRX | SAB (data_reg, rbase, r0)); + tcg_out32 (s, STWBRX | SAB (data_reg2, rbase, r1)); } else { +#ifdef CONFIG_USE_GUEST_BASE + tcg_out32 (s, STWX | SAB (data_reg2, rbase, r0)); + tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4); + tcg_out32 (s, STWX | SAB (data_reg, rbase, r1)); +#else tcg_out32 (s, STW | RS (data_reg2) | RA (r0)); tcg_out32 (s, STW | RS (data_reg) | RA (r0) | 4); +#endif } break; } @@ -890,6 +925,10 @@ void tcg_target_qemu_prologue (TCGContext *s) ); tcg_out32 (s, STW | RS (0) | RA (1) | (frame_size + LR_OFFSET)); +#ifdef CONFIG_USE_GUEST_BASE + tcg_out_movi (s, TCG_TYPE_I32, TCG_GUEST_BASE_REG, GUEST_BASE); +#endif + tcg_out32 (s, MTSPR | RS (3) | CTR); tcg_out32 (s, BCCTR | BO_ALWAYS); tb_ret_addr = s->code_ptr; @@ -1532,6 +1571,9 @@ void tcg_target_init(TCGContext *s) #ifdef __linux__ tcg_regset_set_reg(s->reserved_regs, TCG_REG_R13); #endif +#ifdef CONFIG_USE_GUEST_BASE + tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG); +#endif tcg_add_target_add_op_defs(ppc_op_defs); } diff --git a/tcg/ppc/tcg-target.h b/tcg/ppc/tcg-target.h index 5faf73024..0197e7993 100644 --- a/tcg/ppc/tcg-target.h +++ b/tcg/ppc/tcg-target.h @@ -85,3 +85,5 @@ enum { #define TCG_AREG0 TCG_REG_R27 #define TCG_AREG1 TCG_REG_R24 #define TCG_AREG2 TCG_REG_R25 + +#define TCG_TARGET_HAS_GUEST_BASE -- cgit v1.2.3