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softmmu templates: optionally pass CPUState to memory access functions

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Optionally, make memory access helpers take a parameter for CPUState
instead of relying on global env.

On most targets, perform simple moves to reorder registers. On i386,
switch from regparm(3) calling convention to standard stack-based
version.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Blue Swirl 2011-09-18 14:55:46 +00:00
parent 6a18ae2d29
commit e141ab52d2
16 changed files with 576 additions and 44 deletions
Download patch file Download diff file Expand all files Collapse all files

44
tcg/mips/tcg-target.c
View file

@ -750,6 +750,27 @@ static void tcg_out_setcond2(TCGContext *s, TCGCond cond, int ret,
#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 * const 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 * const 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,
@ -757,6 +778,8 @@ 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,
@ -764,6 +787,7 @@ static void *qemu_st_helpers[4] = {
__stq_mmu,
};
#endif
#endif
static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
int opc)
@ -858,6 +882,15 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
# endif
tcg_out_movi(s, TCG_TYPE_I32, sp_args++, mem_index);
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T9, (tcg_target_long)qemu_ld_helpers[s_bits]);
#ifdef CONFIG_TCG_PASS_AREG0
/* XXX/FIXME: suboptimal and incorrect for 64 on 32 bit */
tcg_out_mov(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[2],
tcg_target_call_iarg_regs[1]);
tcg_out_mov(s, TCG_TYPE_TL, tcg_target_call_iarg_regs[1],
tcg_target_call_iarg_regs[0]);
tcg_out_mov(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[0],
TCG_AREG0);
#endif
tcg_out_opc_reg(s, OPC_JALR, TCG_REG_RA, TCG_REG_T9, 0);
tcg_out_nop(s);
@ -1069,6 +1102,17 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
}
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T9, (tcg_target_long)qemu_st_helpers[s_bits]);
#ifdef CONFIG_TCG_PASS_AREG0
/* XXX/FIXME: suboptimal and incorrect for 64 on 32 bit */
tcg_out_mov(s, TCG_TYPE_I32, 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_TL, tcg_target_call_iarg_regs[1],
tcg_target_call_iarg_regs[0]);
tcg_out_mov(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[0],
TCG_AREG0);
#endif
tcg_out_opc_reg(s, OPC_JALR, TCG_REG_RA, TCG_REG_T9, 0);
tcg_out_nop(s);