diff options
Diffstat (limited to 'tcg/i386/tcg-target.c')
| -rw-r--r-- | tcg/i386/tcg-target.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c index c4e940da5..43a51a1c5 100644 --- a/tcg/i386/tcg-target.c +++ b/tcg/i386/tcg-target.c @@ -178,6 +178,9 @@ static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str) tcg_regset_set32(ct->u.regs, 0, 0xffff); tcg_regset_reset_reg(ct->u.regs, TCG_REG_RSI); tcg_regset_reset_reg(ct->u.regs, TCG_REG_RDI); +#ifdef CONFIG_TCG_PASS_AREG0 + tcg_regset_reset_reg(ct->u.regs, TCG_REG_RDX); +#endif } else { tcg_regset_set32(ct->u.regs, 0, 0xff); tcg_regset_reset_reg(ct->u.regs, TCG_REG_EAX); @@ -957,6 +960,27 @@ static void tcg_out_jmp(TCGContext *s, tcg_target_long dest) #include "../../softmmu_defs.h" +#ifdef CONFIG_TCG_PASS_AREG0 +/* helper signature: helper_ld_mmu(CPUState *env, target_ulong addr, + int mmu_idx) */ +static const void *qemu_ld_helpers[4] = { + helper_ldb_mmu, + helper_ldw_mmu, + helper_ldl_mmu, + helper_ldq_mmu, +}; + +/* helper signature: helper_st_mmu(CPUState *env, target_ulong addr, + uintxx_t val, int mmu_idx) */ +static const void *qemu_st_helpers[4] = { + helper_stb_mmu, + helper_stw_mmu, + helper_stl_mmu, + helper_stq_mmu, +}; +#else +/* legacy helper signature: __ld_mmu(target_ulong addr, int + mmu_idx) */ static void *qemu_ld_helpers[4] = { __ldb_mmu, __ldw_mmu, @@ -964,12 +988,15 @@ static void *qemu_ld_helpers[4] = { __ldq_mmu, }; +/* legacy helper signature: __st_mmu(target_ulong addr, uintxx_t val, + int mmu_idx) */ static void *qemu_st_helpers[4] = { __stb_mmu, __stw_mmu, __stl_mmu, __stq_mmu, }; +#endif /* Perform the TLB load and compare. @@ -1188,11 +1215,26 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, } tcg_out_push(s, args[addrlo_idx]); stack_adjust += 4; +#ifdef CONFIG_TCG_PASS_AREG0 + tcg_out_push(s, TCG_AREG0); + stack_adjust += 4; +#endif #else /* The first argument is already loaded with addrlo. */ arg_idx = 1; tcg_out_movi(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[arg_idx], mem_index); +#ifdef CONFIG_TCG_PASS_AREG0 + /* XXX/FIXME: suboptimal */ + tcg_out_mov(s, TCG_TYPE_I64, tcg_target_call_iarg_regs[3], + tcg_target_call_iarg_regs[2]); + tcg_out_mov(s, TCG_TYPE_I64, tcg_target_call_iarg_regs[2], + tcg_target_call_iarg_regs[1]); + tcg_out_mov(s, TCG_TYPE_I64, tcg_target_call_iarg_regs[1], + tcg_target_call_iarg_regs[0]); + tcg_out_mov(s, TCG_TYPE_I64, tcg_target_call_iarg_regs[0], + TCG_AREG0); +#endif #endif tcg_out_calli(s, (tcg_target_long)qemu_ld_helpers[s_bits]); @@ -1386,11 +1428,26 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, } tcg_out_push(s, args[addrlo_idx]); stack_adjust += 4; +#ifdef CONFIG_TCG_PASS_AREG0 + tcg_out_push(s, TCG_AREG0); + stack_adjust += 4; +#endif #else tcg_out_mov(s, (opc == 3 ? TCG_TYPE_I64 : TCG_TYPE_I32), TCG_REG_RSI, data_reg); tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_RDX, mem_index); stack_adjust = 0; +#ifdef CONFIG_TCG_PASS_AREG0 + /* XXX/FIXME: suboptimal */ + tcg_out_mov(s, TCG_TYPE_I64, tcg_target_call_iarg_regs[3], + tcg_target_call_iarg_regs[2]); + tcg_out_mov(s, TCG_TYPE_I64, tcg_target_call_iarg_regs[2], + tcg_target_call_iarg_regs[1]); + tcg_out_mov(s, TCG_TYPE_I64, tcg_target_call_iarg_regs[1], + tcg_target_call_iarg_regs[0]); + tcg_out_mov(s, TCG_TYPE_I64, tcg_target_call_iarg_regs[0], + TCG_AREG0); +#endif #endif tcg_out_calli(s, (tcg_target_long)qemu_st_helpers[s_bits]); |