On Wed, Mar 28, 2012 at 00:32, Richard Henderson <r...@twiddle.net> wrote:
> And change from %i4/%i5 to %g1/%o7 to remove a v8plus fixme.
>
> Signed-off-by: Richard Henderson <r...@twiddle.net>
> ---
> tcg/sparc/tcg-target.c | 114 ++++++++++++++++++++++++-----------------------
> 1 files changed, 58 insertions(+), 56 deletions(-)
>
> diff --git a/tcg/sparc/tcg-target.c b/tcg/sparc/tcg-target.c
> index 5b3cde4..9e822f3 100644
> --- a/tcg/sparc/tcg-target.c
> +++ b/tcg/sparc/tcg-target.c
> @@ -59,8 +59,12 @@ static const char * const
> tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
> };
> #endif
>
> +/* Define some temporary registers. T2 is used for constant generation. */
> +#define TCG_REG_T1 TCG_REG_G1
> +#define TCG_REG_T2 TCG_REG_O7
> +
> #ifdef CONFIG_USE_GUEST_BASE
> -# define TCG_GUEST_BASE_REG TCG_REG_I3
> +# define TCG_GUEST_BASE_REG TCG_REG_I5
> #else
> # define TCG_GUEST_BASE_REG TCG_REG_G0
> #endif
> @@ -85,6 +89,7 @@ static const int tcg_target_reg_alloc_order[] = {
> TCG_REG_I2,
> TCG_REG_I3,
> TCG_REG_I4,
> + TCG_REG_I5,
> };
>
> static const int tcg_target_call_iarg_regs[6] = {
> @@ -372,10 +377,10 @@ static inline void tcg_out_movi(TCGContext *s, TCGType
> type,
> tcg_out_sethi(s, ret, ~arg);
> tcg_out_arithi(s, ret, ret, (arg & 0x3ff) | -0x400, ARITH_XOR);
> } else {
> - tcg_out_movi_imm32(s, TCG_REG_I4, arg >> (TCG_TARGET_REG_BITS / 2));
> - tcg_out_arithi(s, TCG_REG_I4, TCG_REG_I4, 32, SHIFT_SLLX);
> - tcg_out_movi_imm32(s, ret, arg);
> - tcg_out_arith(s, ret, ret, TCG_REG_I4, ARITH_OR);
> + tcg_out_movi_imm32(s, ret, arg >> (TCG_TARGET_REG_BITS / 2));
> + tcg_out_arithi(s, ret, ret, 32, SHIFT_SLLX);
> + tcg_out_movi_imm32(s, TCG_REG_T2, arg);
> + tcg_out_arith(s, ret, ret, TCG_REG_T2, ARITH_OR);
> }
> }
>
> @@ -392,8 +397,8 @@ static inline void tcg_out_ldst(TCGContext *s, int ret,
> int addr,
> tcg_out32(s, op | INSN_RD(ret) | INSN_RS1(addr) |
> INSN_IMM13(offset));
> } else {
> - tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_I5, offset);
> - tcg_out_ldst_rr(s, ret, addr, TCG_REG_I5, op);
> + tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_T1, offset);
> + tcg_out_ldst_rr(s, ret, addr, TCG_REG_T1, op);
> }
> }
>
> @@ -435,8 +440,8 @@ static inline void tcg_out_addi(TCGContext *s, int reg,
> tcg_target_long val)
> if (check_fit_tl(val, 13))
> tcg_out_arithi(s, reg, reg, val, ARITH_ADD);
> else {
> - tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_I5, val);
> - tcg_out_arith(s, reg, reg, TCG_REG_I5, ARITH_ADD);
> + tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_T1, val);
> + tcg_out_arith(s, reg, reg, TCG_REG_T1, ARITH_ADD);
> }
> }
> }
> @@ -448,8 +453,8 @@ static inline void tcg_out_andi(TCGContext *s, int rd,
> int rs,
> if (check_fit_tl(val, 13))
> tcg_out_arithi(s, rd, rs, val, ARITH_AND);
> else {
> - tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_I5, val);
> - tcg_out_arith(s, rd, rs, TCG_REG_I5, ARITH_AND);
> + tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T1, val);
> + tcg_out_arith(s, rd, rs, TCG_REG_T1, ARITH_AND);
> }
> }
> }
> @@ -461,8 +466,8 @@ static void tcg_out_div32(TCGContext *s, int rd, int rs1,
> if (uns) {
> tcg_out_sety(s, TCG_REG_G0);
> } else {
> - tcg_out_arithi(s, TCG_REG_I5, rs1, 31, SHIFT_SRA);
> - tcg_out_sety(s, TCG_REG_I5);
> + tcg_out_arithi(s, TCG_REG_T1, rs1, 31, SHIFT_SRA);
> + tcg_out_sety(s, TCG_REG_T1);
By the way, since we assume V9+, this 32 bit division which uses the
register y could be changed (in some later patch) to use nicer 64 bit
division.
> }
>
> tcg_out_arithc(s, rd, rs1, val2, val2const,
> @@ -608,8 +613,8 @@ static void tcg_out_setcond_i32(TCGContext *s, TCGCond
> cond, TCGArg ret,
> case TCG_COND_GTU:
> case TCG_COND_GEU:
> if (c2const && c2 != 0) {
> - tcg_out_movi_imm13(s, TCG_REG_I5, c2);
> - c2 = TCG_REG_I5;
> + tcg_out_movi_imm13(s, TCG_REG_T1, c2);
> + c2 = TCG_REG_T1;
> }
> t = c1, c1 = c2, c2 = t, c2const = 0;
> cond = tcg_swap_cond(cond);
> @@ -656,15 +661,15 @@ static void tcg_out_setcond2_i32(TCGContext *s, TCGCond
> cond, TCGArg ret,
>
> switch (cond) {
> case TCG_COND_EQ:
> - tcg_out_setcond_i32(s, TCG_COND_EQ, TCG_REG_I5, al, bl, blconst);
> + tcg_out_setcond_i32(s, TCG_COND_EQ, TCG_REG_T1, al, bl, blconst);
> tcg_out_setcond_i32(s, TCG_COND_EQ, ret, ah, bh, bhconst);
> - tcg_out_arith(s, ret, ret, TCG_REG_I5, ARITH_AND);
> + tcg_out_arith(s, ret, ret, TCG_REG_T1, ARITH_AND);
> break;
>
> case TCG_COND_NE:
> - tcg_out_setcond_i32(s, TCG_COND_NE, TCG_REG_I5, al, al, blconst);
> + tcg_out_setcond_i32(s, TCG_COND_NE, TCG_REG_T1, al, al, blconst);
> tcg_out_setcond_i32(s, TCG_COND_NE, ret, ah, bh, bhconst);
> - tcg_out_arith(s, ret, ret, TCG_REG_I5, ARITH_OR);
> + tcg_out_arith(s, ret, ret, TCG_REG_T1, ARITH_OR);
> break;
>
> default:
> @@ -964,8 +969,8 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg
> *args, int sizeop)
> #else
> addr_reg = args[addrlo_idx];
> if (TCG_TARGET_REG_BITS == 64 && TARGET_LONG_BITS == 32) {
> - tcg_out_arithi(s, TCG_REG_I5, addr_reg, 0, SHIFT_SRL);
> - addr_reg = TCG_REG_I5;
> + tcg_out_arithi(s, TCG_REG_T1, addr_reg, 0, SHIFT_SRL);
> + addr_reg = TCG_REG_T1;
> }
> if (TCG_TARGET_REG_BITS == 32 && sizeop == 3) {
> int reg64 = (datalo < 16 ? datalo : TCG_REG_O0);
> @@ -1008,12 +1013,11 @@ static void tcg_out_qemu_st(TCGContext *s, const
> TCGArg *args, int sizeop)
> offsetof(CPUTLBEntry, addr_write));
>
> if (TCG_TARGET_REG_BITS == 32 && sizeop == 3) {
> - /* Reconstruct the full 64-bit value in %g1, using %o2 as temp. */
> - /* ??? Redefine the temps from %i4/%i5 so that we have a o/g temp. */
> - tcg_out_arithi(s, TCG_REG_G1, datalo, 0, SHIFT_SRL);
> + /* Reconstruct the full 64-bit value. */
> + tcg_out_arithi(s, TCG_REG_T1, datalo, 0, SHIFT_SRL);
> tcg_out_arithi(s, TCG_REG_O2, datahi, 32, SHIFT_SLLX);
> - tcg_out_arith(s, TCG_REG_G1, TCG_REG_G1, TCG_REG_O2, ARITH_OR);
> - datalo = TCG_REG_G1;
> + tcg_out_arith(s, TCG_REG_O2, TCG_REG_T1, TCG_REG_O2, ARITH_OR);
> + datalo = TCG_REG_O2;
> }
>
> /* The fast path is exactly one insn. Thus we can perform the entire
> @@ -1054,16 +1058,14 @@ static void tcg_out_qemu_st(TCGContext *s, const
> TCGArg *args, int sizeop)
> #else
> addr_reg = args[addrlo_idx];
> if (TCG_TARGET_REG_BITS == 64 && TARGET_LONG_BITS == 32) {
> - tcg_out_arithi(s, TCG_REG_I5, addr_reg, 0, SHIFT_SRL);
> - addr_reg = TCG_REG_I5;
> + tcg_out_arithi(s, TCG_REG_T1, addr_reg, 0, SHIFT_SRL);
> + addr_reg = TCG_REG_T1;
> }
> if (TCG_TARGET_REG_BITS == 32 && sizeop == 3) {
> - /* Reconstruct the full 64-bit value in %g1, using %o2 as temp. */
> - /* ??? Redefine the temps from %i4/%i5 so that we have a o/g temp. */
> - tcg_out_arithi(s, TCG_REG_G1, datalo, 0, SHIFT_SRL);
> + tcg_out_arithi(s, TCG_REG_T1, datalo, 0, SHIFT_SRL);
> tcg_out_arithi(s, TCG_REG_O2, datahi, 32, SHIFT_SLLX);
> - tcg_out_arith(s, TCG_REG_G1, TCG_REG_G1, TCG_REG_O2, ARITH_OR);
> - datalo = TCG_REG_G1;
> + tcg_out_arith(s, TCG_REG_O2, TCG_REG_T1, TCG_REG_O2, ARITH_OR);
> + datalo = TCG_REG_O2;
> }
> tcg_out_ldst_rr(s, datalo, addr_reg,
> (GUEST_BASE ? TCG_GUEST_BASE_REG : TCG_REG_G0),
> @@ -1087,28 +1089,28 @@ static inline void tcg_out_op(TCGContext *s,
> TCGOpcode opc, const TCGArg *args,
> case INDEX_op_goto_tb:
> if (s->tb_jmp_offset) {
> /* direct jump method */
> - tcg_out_sethi(s, TCG_REG_I5, args[0] & 0xffffe000);
> - tcg_out32(s, JMPL | INSN_RD(TCG_REG_G0) | INSN_RS1(TCG_REG_I5) |
> + tcg_out_sethi(s, TCG_REG_T1, args[0] & 0xffffe000);
> + tcg_out32(s, JMPL | INSN_RD(TCG_REG_G0) | INSN_RS1(TCG_REG_T1) |
> INSN_IMM13((args[0] & 0x1fff)));
> s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
> } else {
> /* indirect jump method */
> - tcg_out_ld_ptr(s, TCG_REG_I5, (tcg_target_long)(s->tb_next +
> args[0]));
> - tcg_out32(s, JMPL | INSN_RD(TCG_REG_G0) | INSN_RS1(TCG_REG_I5) |
> + tcg_out_ld_ptr(s, TCG_REG_T1, (tcg_target_long)(s->tb_next +
> args[0]));
WARNING: line over 80 characters
#231: FILE: tcg/sparc/tcg-target.c:1098:
+ tcg_out_ld_ptr(s, TCG_REG_T1,
(tcg_target_long)(s->tb_next + args[0]));
> + tcg_out32(s, JMPL | INSN_RD(TCG_REG_G0) | INSN_RS1(TCG_REG_T1) |
> INSN_RS2(TCG_REG_G0));
> }
> tcg_out_nop(s);
> s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
> break;
> case INDEX_op_call:
> - if (const_args[0])
> + if (const_args[0]) {
> tcg_out32(s, CALL | ((((tcg_target_ulong)args[0]
> - (tcg_target_ulong)s->code_ptr) >> 2)
> & 0x3fffffff));
> - else {
> - tcg_out_ld_ptr(s, TCG_REG_I5,
> + } else {
> + tcg_out_ld_ptr(s, TCG_REG_T1,
> (tcg_target_long)(s->tb_next + args[0]));
> - tcg_out32(s, JMPL | INSN_RD(TCG_REG_O7) | INSN_RS1(TCG_REG_I5) |
> + tcg_out32(s, JMPL | INSN_RD(TCG_REG_O7) | INSN_RS1(TCG_REG_T1) |
> INSN_RS2(TCG_REG_G0));
> }
> /* delay slot */
> @@ -1214,11 +1216,11 @@ static inline void tcg_out_op(TCGContext *s,
> TCGOpcode opc, const TCGArg *args,
>
> case INDEX_op_rem_i32:
> case INDEX_op_remu_i32:
> - tcg_out_div32(s, TCG_REG_I5, args[1], args[2], const_args[2],
> + tcg_out_div32(s, TCG_REG_T1, args[1], args[2], const_args[2],
> opc == INDEX_op_remu_i32);
> - tcg_out_arithc(s, TCG_REG_I5, TCG_REG_I5, args[2], const_args[2],
> + tcg_out_arithc(s, TCG_REG_T1, TCG_REG_T1, args[2], const_args[2],
> ARITH_UMUL);
> - tcg_out_arith(s, args[0], args[1], TCG_REG_I5, ARITH_SUB);
> + tcg_out_arith(s, args[0], args[1], TCG_REG_T1, ARITH_SUB);
> break;
>
> case INDEX_op_brcond_i32:
> @@ -1335,11 +1337,11 @@ static inline void tcg_out_op(TCGContext *s,
> TCGOpcode opc, const TCGArg *args,
> goto gen_arith;
> case INDEX_op_rem_i64:
> case INDEX_op_remu_i64:
> - tcg_out_arithc(s, TCG_REG_I5, args[1], args[2], const_args[2],
> + tcg_out_arithc(s, TCG_REG_T1, args[1], args[2], const_args[2],
> opc == INDEX_op_rem_i64 ? ARITH_SDIVX : ARITH_UDIVX);
> - tcg_out_arithc(s, TCG_REG_I5, TCG_REG_I5, args[2], const_args[2],
> + tcg_out_arithc(s, TCG_REG_T1, TCG_REG_T1, args[2], const_args[2],
> ARITH_MULX);
> - tcg_out_arith(s, args[0], args[1], TCG_REG_I5, ARITH_SUB);
> + tcg_out_arith(s, args[0], args[1], TCG_REG_T1, ARITH_SUB);
> break;
> case INDEX_op_ext32s_i64:
> if (const_args[1]) {
> @@ -1537,15 +1539,15 @@ static void tcg_target_init(TCGContext *s)
> (1 << TCG_REG_O7));
>
> tcg_regset_clear(s->reserved_regs);
> - tcg_regset_set_reg(s->reserved_regs, TCG_REG_G0);
> -#if TCG_TARGET_REG_BITS == 64
> - tcg_regset_set_reg(s->reserved_regs, TCG_REG_I4); // for internal use
> -#endif
> - tcg_regset_set_reg(s->reserved_regs, TCG_REG_I5); // for internal use
> - tcg_regset_set_reg(s->reserved_regs, TCG_REG_I6);
> - tcg_regset_set_reg(s->reserved_regs, TCG_REG_I7);
> - tcg_regset_set_reg(s->reserved_regs, TCG_REG_O6);
> - tcg_regset_set_reg(s->reserved_regs, TCG_REG_O7);
> + tcg_regset_set_reg(s->reserved_regs, TCG_REG_G0); /* zero */
> + tcg_regset_set_reg(s->reserved_regs, TCG_REG_G6); /* reserved for os */
> + tcg_regset_set_reg(s->reserved_regs, TCG_REG_G7); /* thread pointer */
> + tcg_regset_set_reg(s->reserved_regs, TCG_REG_I6); /* frame pointer */
> + tcg_regset_set_reg(s->reserved_regs, TCG_REG_I7); /* return address */
> + tcg_regset_set_reg(s->reserved_regs, TCG_REG_O6); /* stack pointer */
> + tcg_regset_set_reg(s->reserved_regs, TCG_REG_T1); /* for internal use */
> + tcg_regset_set_reg(s->reserved_regs, TCG_REG_T2); /* for internal use */
> +
> tcg_add_target_add_op_defs(sparc_op_defs);
> }
>
> --
> 1.7.7.6
>
