diff options
Diffstat (limited to 'tcg/sparc')
| -rw-r--r-- | tcg/sparc/tcg-target-con-str.h | 23 | ||||
| -rw-r--r-- | tcg/sparc/tcg-target.c.inc | 79 | ||||
| -rw-r--r-- | tcg/sparc/tcg-target.h | 5 |
3 files changed, 54 insertions, 53 deletions
diff --git a/tcg/sparc/tcg-target-con-str.h b/tcg/sparc/tcg-target-con-str.h new file mode 100644 index 0000000..fdb25d9 --- /dev/null +++ b/tcg/sparc/tcg-target-con-str.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Define Sparc target-specific operand constraints. + * Copyright (c) 2021 Linaro + */ + +/* + * Define constraint letters for register sets: + * REGS(letter, register_mask) + */ +REGS('r', ALL_GENERAL_REGS) +REGS('R', ALL_GENERAL_REGS64) +REGS('s', ALL_QLDST_REGS) +REGS('S', ALL_QLDST_REGS64) +REGS('A', TARGET_LONG_BITS == 64 ? ALL_QLDST_REGS64 : ALL_QLDST_REGS) + +/* + * Define constraint letters for constants: + * CONST(letter, TCG_CT_CONST_* bit set) + */ +CONST('I', TCG_CT_CONST_S11) +CONST('J', TCG_CT_CONST_S13) +CONST('Z', TCG_CT_CONST_ZERO) diff --git a/tcg/sparc/tcg-target.c.inc b/tcg/sparc/tcg-target.c.inc index 28b5b65..e291eb0 100644 --- a/tcg/sparc/tcg-target.c.inc +++ b/tcg/sparc/tcg-target.c.inc @@ -67,17 +67,37 @@ static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { # define SPARC64 0 #endif -/* Note that sparcv8plus can only hold 64 bit quantities in %g and %o - registers. These are saved manually by the kernel in full 64-bit - slots. The %i and %l registers are saved by the register window - mechanism, which only allocates space for 32 bits. Given that this - window spill/fill can happen on any signal, we must consider the - high bits of the %i and %l registers garbage at all times. */ +#define TCG_CT_CONST_S11 0x100 +#define TCG_CT_CONST_S13 0x200 +#define TCG_CT_CONST_ZERO 0x400 + +/* + * For softmmu, we need to avoid conflicts with the first 3 + * argument registers to perform the tlb lookup, and to call + * the helper function. + */ +#ifdef CONFIG_SOFTMMU +#define SOFTMMU_RESERVE_REGS MAKE_64BIT_MASK(TCG_REG_O0, 3) +#else +#define SOFTMMU_RESERVE_REGS 0 +#endif + +/* + * Note that sparcv8plus can only hold 64 bit quantities in %g and %o + * registers. These are saved manually by the kernel in full 64-bit + * slots. The %i and %l registers are saved by the register window + * mechanism, which only allocates space for 32 bits. Given that this + * window spill/fill can happen on any signal, we must consider the + * high bits of the %i and %l registers garbage at all times. + */ +#define ALL_GENERAL_REGS MAKE_64BIT_MASK(0, 32) #if SPARC64 -# define ALL_64 0xffffffffu +# define ALL_GENERAL_REGS64 ALL_GENERAL_REGS #else -# define ALL_64 0xffffu +# define ALL_GENERAL_REGS64 MAKE_64BIT_MASK(0, 16) #endif +#define ALL_QLDST_REGS (ALL_GENERAL_REGS & ~SOFTMMU_RESERVE_REGS) +#define ALL_QLDST_REGS64 (ALL_GENERAL_REGS64 & ~SOFTMMU_RESERVE_REGS) /* Define some temporary registers. T2 is used for constant generation. */ #define TCG_REG_T1 TCG_REG_G1 @@ -320,45 +340,6 @@ static bool patch_reloc(tcg_insn_unit *src_rw, int type, return true; } -/* parse target specific constraints */ -static const char *target_parse_constraint(TCGArgConstraint *ct, - const char *ct_str, TCGType type) -{ - switch (*ct_str++) { - case 'r': - ct->regs = 0xffffffff; - break; - case 'R': - ct->regs = ALL_64; - break; - case 'A': /* qemu_ld/st address constraint */ - ct->regs = TARGET_LONG_BITS == 64 ? ALL_64 : 0xffffffff; - reserve_helpers: - tcg_regset_reset_reg(ct->regs, TCG_REG_O0); - tcg_regset_reset_reg(ct->regs, TCG_REG_O1); - tcg_regset_reset_reg(ct->regs, TCG_REG_O2); - break; - case 's': /* qemu_st data 32-bit constraint */ - ct->regs = 0xffffffff; - goto reserve_helpers; - case 'S': /* qemu_st data 64-bit constraint */ - ct->regs = ALL_64; - goto reserve_helpers; - case 'I': - ct->ct |= TCG_CT_CONST_S11; - break; - case 'J': - ct->ct |= TCG_CT_CONST_S13; - break; - case 'Z': - ct->ct |= TCG_CT_CONST_ZERO; - break; - default: - return NULL; - } - return ct_str; -} - /* test if a constant matches the constraint */ static inline int tcg_target_const_match(tcg_target_long val, TCGType type, const TCGArgConstraint *arg_ct) @@ -1746,8 +1727,8 @@ static void tcg_target_init(TCGContext *s) } #endif - tcg_target_available_regs[TCG_TYPE_I32] = 0xffffffff; - tcg_target_available_regs[TCG_TYPE_I64] = ALL_64; + tcg_target_available_regs[TCG_TYPE_I32] = ALL_GENERAL_REGS; + tcg_target_available_regs[TCG_TYPE_I64] = ALL_GENERAL_REGS64; tcg_target_call_clobber_regs = 0; tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_G1); diff --git a/tcg/sparc/tcg-target.h b/tcg/sparc/tcg-target.h index 95ab9af..5185b00 100644 --- a/tcg/sparc/tcg-target.h +++ b/tcg/sparc/tcg-target.h @@ -66,10 +66,6 @@ typedef enum { TCG_REG_I7, } TCGReg; -#define TCG_CT_CONST_S11 0x100 -#define TCG_CT_CONST_S13 0x200 -#define TCG_CT_CONST_ZERO 0x400 - /* used for function call generation */ #define TCG_REG_CALL_STACK TCG_REG_O6 @@ -172,5 +168,6 @@ extern bool use_vis3_instructions; void tb_target_set_jmp_target(uintptr_t, uintptr_t, uintptr_t, uintptr_t); #define TCG_TARGET_NEED_POOL_LABELS +#define TCG_TARGET_CON_STR_H #endif |