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tcg-sparc: Tidy call+jump patterns

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Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-08-20 18:25:38 -07:00
parent d801a8f2ce
commit aad2f06a7f
1 changed files with 19 additions and 19 deletions
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38
tcg/sparc/tcg-target.c
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@ -783,6 +783,18 @@ static void tcg_out_addsub2(TCGContext *s, TCGArg rl, TCGArg rh,
tcg_out_mov(s, TCG_TYPE_I32, rl, tmp);
}
static inline void tcg_out_calli(TCGContext *s, uintptr_t dest)
{
intptr_t disp = dest - (uintptr_t)s->code_ptr;
if (disp == (int32_t)disp) {
tcg_out32(s, CALL | (uint32_t)disp >> 2);
} else {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_T1, dest & ~0xfff);
tcg_out_arithi(s, TCG_REG_O7, TCG_REG_T1, dest & 0xfff, JMPL);
}
}
/* Generate global QEMU prologue and epilogue code */
static void tcg_target_qemu_prologue(TCGContext *s)
{
@ -810,8 +822,7 @@ static void tcg_target_qemu_prologue(TCGContext *s)
}
#endif
tcg_out32(s, JMPL | INSN_RD(TCG_REG_G0) | INSN_RS1(TCG_REG_I1) |
INSN_RS2(TCG_REG_G0));
tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I1, 0, JMPL);
/* delay slot */
tcg_out_nop(s);
@ -1003,9 +1014,7 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, int sizeop)
args[addrlo_idx]);
/* qemu_ld_helper[s_bits](arg0, arg1) */
tcg_out32(s, CALL | ((((tcg_target_ulong)qemu_ld_helpers[s_bits]
- (tcg_target_ulong)s->code_ptr) >> 2)
& 0x3fffffff));
tcg_out_calli(s, (uintptr_t)qemu_ld_helpers[s_bits]);
/* delay slot */
tcg_out_movi(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[n], memi);
@ -1122,9 +1131,7 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, int sizeop)
tcg_out_mov(s, TCG_TYPE_REG, tcg_target_call_iarg_regs[n++], datalo);
/* qemu_st_helper[s_bits](arg0, arg1, arg2) */
tcg_out32(s, CALL | ((((tcg_target_ulong)qemu_st_helpers[sizeop]
- (tcg_target_ulong)s->code_ptr) >> 2)
& 0x3fffffff));
tcg_out_calli(s, (uintptr_t)qemu_st_helpers[sizeop]);
/* delay slot */
tcg_out_movi(s, TCG_TYPE_REG, tcg_target_call_iarg_regs[n], memi);
@ -1156,8 +1163,7 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
switch (opc) {
case INDEX_op_exit_tb:
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_I0, args[0]);
tcg_out32(s, JMPL | INSN_RD(TCG_REG_G0) | INSN_RS1(TCG_REG_I7) |
INSN_IMM13(8));
tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, JMPL);
tcg_out32(s, RESTORE | INSN_RD(TCG_REG_G0) | INSN_RS1(TCG_REG_G0) |
INSN_RS2(TCG_REG_G0));
break;
@ -1172,22 +1178,16 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
/* indirect jump method */
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_arithi(s, TCG_REG_G0, TCG_REG_T1, 0, JMPL);
}
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]) {
tcg_out32(s, CALL | ((((tcg_target_ulong)args[0]
- (tcg_target_ulong)s->code_ptr) >> 2)
& 0x3fffffff));
tcg_out_calli(s, args[0]);
} 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_T1) |
INSN_RS2(TCG_REG_G0));
tcg_out_arithi(s, TCG_REG_O7, args[0], 0, JMPL);
}
/* delay slot */
tcg_out_nop(s);