From ac34fb5c5d46398ede6e16d4fd1fd26af8185335 Mon Sep 17 00:00:00 2001 From: Aurelien Jarno Date: Fri, 9 Apr 2010 20:52:48 +0200 Subject: [PATCH] tcg/arm: add variables to define the allowed instructions set Use a set of variables to define the allowed ARM instructions, depending on the __ARM_ARCH_*__ GCC defines. Signed-off-by: Aurelien Jarno --- tcg/arm/tcg-target.c | 123 +++++++++++++++++++++++++++++++++++---------------- 1 file changed, 84 insertions(+), 39 deletions(-) diff --git a/tcg/arm/tcg-target.c b/tcg/arm/tcg-target.c index ee5f7238b9..24526ca21f 100644 --- a/tcg/arm/tcg-target.c +++ b/tcg/arm/tcg-target.c @@ -22,6 +22,51 @@ * THE SOFTWARE. */ +#if defined(__ARM_ARCH_7__) || \ + defined(__ARM_ARCH_7A__) || \ + defined(__ARM_ARCH_7EM__) || \ + defined(__ARM_ARCH_7M__) || \ + defined(__ARM_ARCH_7R__) +#define USE_ARMV7_INSTRUCTIONS +#endif + +#if defined(USE_ARMV7_INSTRUCTIONS) || \ + defined(__ARM_ARCH_6J__) || \ + defined(__ARM_ARCH_6K__) || \ + defined(__ARM_ARCH_6T2__) || \ + defined(__ARM_ARCH_6Z__) || \ + defined(__ARM_ARCH_6ZK__) +#define USE_ARMV6_INSTRUCTIONS +#endif + +#if defined(USE_ARMV6_INSTRUCTIONS) || \ + defined(__ARM_ARCH_5T__) || \ + defined(__ARM_ARCH_5TE__) || \ + defined(__ARM_ARCH_5TEJ__) +#define USE_ARMV5_INSTRUCTIONS +#endif + +#ifdef USE_ARMV5_INSTRUCTIONS +static const int use_armv5_instructions = 1; +#else +static const int use_armv5_instructions = 0; +#endif +#undef USE_ARMV5_INSTRUCTIONS + +#ifdef USE_ARMV6_INSTRUCTIONS +static const int use_armv6_instructions = 1; +#else +static const int use_armv6_instructions = 0; +#endif +#undef USE_ARMV6_INSTRUCTIONS + +#ifdef USE_ARMV7_INSTRUCTIONS +static const int use_armv7_instructions = 1; +#else +static const int use_armv7_instructions = 0; +#endif +#undef USE_ARMV7_INSTRUCTIONS + #ifndef NDEBUG static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { "%r0", @@ -361,27 +406,27 @@ static inline void tcg_out_movi32(TCGContext *s, tcg_out_dat_imm(s, cond, ARITH_ADD, rd, 15, offset) : tcg_out_dat_imm(s, cond, ARITH_SUB, rd, 15, -offset); -#ifdef __ARM_ARCH_7A__ - /* use movw/movt */ - /* movw */ - tcg_out32(s, (cond << 28) | 0x03000000 | (rd << 12) - | ((arg << 4) & 0x000f0000) | (arg & 0xfff)); - if (arg & 0xffff0000) - /* movt */ - tcg_out32(s, (cond << 28) | 0x03400000 | (rd << 12) - | ((arg >> 12) & 0x000f0000) | ((arg >> 16) & 0xfff)); -#else - tcg_out_dat_imm(s, cond, ARITH_MOV, rd, 0, arg & 0xff); - if (arg & 0x0000ff00) - tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd, - ((arg >> 8) & 0xff) | 0xc00); - if (arg & 0x00ff0000) - tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd, - ((arg >> 16) & 0xff) | 0x800); - if (arg & 0xff000000) - tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd, - ((arg >> 24) & 0xff) | 0x400); -#endif + if (use_armv7_instructions) { + /* use movw/movt */ + /* movw */ + tcg_out32(s, (cond << 28) | 0x03000000 | (rd << 12) + | ((arg << 4) & 0x000f0000) | (arg & 0xfff)); + if (arg & 0xffff0000) + /* movt */ + tcg_out32(s, (cond << 28) | 0x03400000 | (rd << 12) + | ((arg >> 12) & 0x000f0000) | ((arg >> 16) & 0xfff)); + } else { + tcg_out_dat_imm(s, cond, ARITH_MOV, rd, 0, arg & 0xff); + if (arg & 0x0000ff00) + tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd, + ((arg >> 8) & 0xff) | 0xc00); + if (arg & 0x00ff0000) + tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd, + ((arg >> 16) & 0xff) | 0x800); + if (arg & 0xff000000) + tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd, + ((arg >> 24) & 0xff) | 0x400); + } } static inline void tcg_out_mul32(TCGContext *s, @@ -1433,26 +1478,26 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, break; case INDEX_op_ext8s_i32: -#ifdef __ARM_ARCH_7A__ - /* sxtb */ - tcg_out32(s, 0xe6af0070 | (args[0] << 12) | args[1]); -#else - tcg_out_dat_reg(s, COND_AL, ARITH_MOV, - args[0], 0, args[1], SHIFT_IMM_LSL(24)); - tcg_out_dat_reg(s, COND_AL, ARITH_MOV, - args[0], 0, args[0], SHIFT_IMM_ASR(24)); -#endif + if (use_armv7_instructions) { + /* sxtb */ + tcg_out32(s, 0xe6af0070 | (args[0] << 12) | args[1]); + } else { + tcg_out_dat_reg(s, COND_AL, ARITH_MOV, + args[0], 0, args[1], SHIFT_IMM_LSL(24)); + tcg_out_dat_reg(s, COND_AL, ARITH_MOV, + args[0], 0, args[0], SHIFT_IMM_ASR(24)); + } break; case INDEX_op_ext16s_i32: -#ifdef __ARM_ARCH_7A__ - /* sxth */ - tcg_out32(s, 0xe6bf0070 | (args[0] << 12) | args[1]); -#else - tcg_out_dat_reg(s, COND_AL, ARITH_MOV, - args[0], 0, args[1], SHIFT_IMM_LSL(16)); - tcg_out_dat_reg(s, COND_AL, ARITH_MOV, - args[0], 0, args[0], SHIFT_IMM_ASR(16)); -#endif + if (use_armv7_instructions) { + /* sxth */ + tcg_out32(s, 0xe6bf0070 | (args[0] << 12) | args[1]); + } else { + tcg_out_dat_reg(s, COND_AL, ARITH_MOV, + args[0], 0, args[1], SHIFT_IMM_LSL(16)); + tcg_out_dat_reg(s, COND_AL, ARITH_MOV, + args[0], 0, args[0], SHIFT_IMM_ASR(16)); + } break; default: -- 2.11.0