diff options
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/aarch64/tcg-target.c | 121 |
1 files changed, 116 insertions, 5 deletions
diff --git a/tcg/aarch64/tcg-target.c b/tcg/aarch64/tcg-target.c index 934109efc5..562a549dab 100644 --- a/tcg/aarch64/tcg-target.c +++ b/tcg/aarch64/tcg-target.c @@ -24,10 +24,16 @@ static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { }; #endif /* NDEBUG */ +#ifdef TARGET_WORDS_BIGENDIAN + #define TCG_LDST_BSWAP 1 +#else + #define TCG_LDST_BSWAP 0 +#endif + static const int tcg_target_reg_alloc_order[] = { TCG_REG_X20, TCG_REG_X21, TCG_REG_X22, TCG_REG_X23, TCG_REG_X24, TCG_REG_X25, TCG_REG_X26, TCG_REG_X27, - TCG_REG_X28, + TCG_REG_X28, /* we will reserve this for GUEST_BASE if configured */ TCG_REG_X9, TCG_REG_X10, TCG_REG_X11, TCG_REG_X12, TCG_REG_X13, TCG_REG_X14, TCG_REG_X15, @@ -51,6 +57,14 @@ static const int tcg_target_call_oarg_regs[1] = { #define TCG_REG_TMP TCG_REG_X8 +#ifndef CONFIG_SOFTMMU +# if defined(CONFIG_USE_GUEST_BASE) +# define TCG_REG_GUEST_BASE TCG_REG_X28 +# else +# define TCG_REG_GUEST_BASE TCG_REG_XZR +# endif +#endif + static inline void reloc_pc26(void *code_ptr, tcg_target_long target) { tcg_target_long offset; uint32_t insn; @@ -713,6 +727,94 @@ static const void * const qemu_st_helpers[4] = { helper_stq_mmu, }; +#else /* !CONFIG_SOFTMMU */ + +static void tcg_out_qemu_ld_direct(TCGContext *s, int opc, TCGReg data_r, + TCGReg addr_r, TCGReg off_r) +{ + switch (opc) { + case 0: + tcg_out_ldst_r(s, LDST_8, LDST_LD, data_r, addr_r, off_r); + break; + case 0 | 4: + tcg_out_ldst_r(s, LDST_8, LDST_LD_S_X, data_r, addr_r, off_r); + break; + case 1: + tcg_out_ldst_r(s, LDST_16, LDST_LD, data_r, addr_r, off_r); + if (TCG_LDST_BSWAP) { + tcg_out_rev16(s, 0, data_r, data_r); + } + break; + case 1 | 4: + if (TCG_LDST_BSWAP) { + tcg_out_ldst_r(s, LDST_16, LDST_LD, data_r, addr_r, off_r); + tcg_out_rev16(s, 0, data_r, data_r); + tcg_out_sxt(s, 1, 1, data_r, data_r); + } else { + tcg_out_ldst_r(s, LDST_16, LDST_LD_S_X, data_r, addr_r, off_r); + } + break; + case 2: + tcg_out_ldst_r(s, LDST_32, LDST_LD, data_r, addr_r, off_r); + if (TCG_LDST_BSWAP) { + tcg_out_rev(s, 0, data_r, data_r); + } + break; + case 2 | 4: + if (TCG_LDST_BSWAP) { + tcg_out_ldst_r(s, LDST_32, LDST_LD, data_r, addr_r, off_r); + tcg_out_rev(s, 0, data_r, data_r); + tcg_out_sxt(s, 1, 2, data_r, data_r); + } else { + tcg_out_ldst_r(s, LDST_32, LDST_LD_S_X, data_r, addr_r, off_r); + } + break; + case 3: + tcg_out_ldst_r(s, LDST_64, LDST_LD, data_r, addr_r, off_r); + if (TCG_LDST_BSWAP) { + tcg_out_rev(s, 1, data_r, data_r); + } + break; + default: + tcg_abort(); + } +} + +static void tcg_out_qemu_st_direct(TCGContext *s, int opc, TCGReg data_r, + TCGReg addr_r, TCGReg off_r) +{ + switch (opc) { + case 0: + tcg_out_ldst_r(s, LDST_8, LDST_ST, data_r, addr_r, off_r); + break; + case 1: + if (TCG_LDST_BSWAP) { + tcg_out_rev16(s, 0, TCG_REG_TMP, data_r); + tcg_out_ldst_r(s, LDST_16, LDST_ST, TCG_REG_TMP, addr_r, off_r); + } else { + tcg_out_ldst_r(s, LDST_16, LDST_ST, data_r, addr_r, off_r); + } + break; + case 2: + if (TCG_LDST_BSWAP) { + tcg_out_rev(s, 0, TCG_REG_TMP, data_r); + tcg_out_ldst_r(s, LDST_32, LDST_ST, TCG_REG_TMP, addr_r, off_r); + } else { + tcg_out_ldst_r(s, LDST_32, LDST_ST, data_r, addr_r, off_r); + } + break; + case 3: + if (TCG_LDST_BSWAP) { + tcg_out_rev(s, 1, TCG_REG_TMP, data_r); + tcg_out_ldst_r(s, LDST_64, LDST_ST, TCG_REG_TMP, addr_r, off_r); + } else { + tcg_out_ldst_r(s, LDST_64, LDST_ST, data_r, addr_r, off_r); + } + break; + default: + tcg_abort(); + } +} #endif /* CONFIG_SOFTMMU */ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, int opc) @@ -745,8 +847,9 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, int opc) } #else /* !CONFIG_SOFTMMU */ - tcg_abort(); /* TODO */ -#endif + tcg_out_qemu_ld_direct(s, opc, data_reg, addr_reg, + GUEST_BASE ? TCG_REG_GUEST_BASE : TCG_REG_XZR); +#endif /* CONFIG_SOFTMMU */ } static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, int opc) @@ -774,8 +877,9 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, int opc) tcg_out_callr(s, TCG_REG_TMP); #else /* !CONFIG_SOFTMMU */ - tcg_abort(); /* TODO */ -#endif + tcg_out_qemu_st_direct(s, opc, data_reg, addr_reg, + GUEST_BASE ? TCG_REG_GUEST_BASE : TCG_REG_XZR); +#endif /* CONFIG_SOFTMMU */ } static uint8_t *tb_ret_addr; @@ -1270,6 +1374,13 @@ static void tcg_target_qemu_prologue(TCGContext *s) tcg_set_frame(s, TCG_REG_SP, TCG_STATIC_CALL_ARGS_SIZE, CPU_TEMP_BUF_NLONGS * sizeof(long)); +#if defined(CONFIG_USE_GUEST_BASE) + if (GUEST_BASE) { + tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_GUEST_BASE, GUEST_BASE); + tcg_regset_set_reg(s->reserved_regs, TCG_REG_GUEST_BASE); + } +#endif + tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]); tcg_out_gotor(s, tcg_target_call_iarg_regs[1]); |