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target-sparc: Use global registers for the register window 

Via indirection off cpu_regwptr.

Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-09-19 10:51:12 -07:00
parent 0ea63844c2
commit d2dc4069e0
1 changed files with 34 additions and 25 deletions
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59
target-sparc/translate.c
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@ -43,7 +43,8 @@ static TCGv_ptr cpu_env, cpu_regwptr;
static TCGv cpu_cc_src, cpu_cc_src2, cpu_cc_dst;
static TCGv_i32 cpu_cc_op;
static TCGv_i32 cpu_psr;
static TCGv cpu_fsr, cpu_pc, cpu_npc, cpu_gregs[8];
static TCGv cpu_fsr, cpu_pc, cpu_npc;
static TCGv cpu_regs[32];
static TCGv cpu_y;
#ifndef CONFIG_USER_ONLY
static TCGv cpu_tbr;
@ -273,36 +274,31 @@ static inline void gen_address_mask(DisasContext *dc, TCGv addr)
static inline TCGv gen_load_gpr(DisasContext *dc, int reg)
{
if (reg == 0 || reg >= 8) {
TCGv t = get_temp_tl(dc);
if (reg == 0) {
tcg_gen_movi_tl(t, 0);
} else {
tcg_gen_ld_tl(t, cpu_regwptr, (reg - 8) * sizeof(target_ulong));
}
return t;
if (reg > 0) {
assert(reg < 32);
return cpu_regs[reg];
} else {
return cpu_gregs[reg];
TCGv t = get_temp_tl(dc);
tcg_gen_movi_tl(t, 0);
return t;
}
}
static inline void gen_store_gpr(DisasContext *dc, int reg, TCGv v)
{
if (reg > 0) {
if (reg < 8) {
tcg_gen_mov_tl(cpu_gregs[reg], v);
} else {
tcg_gen_st_tl(v, cpu_regwptr, (reg - 8) * sizeof(target_ulong));
}
assert(reg < 32);
tcg_gen_mov_tl(cpu_regs[reg], v);
}
}
static inline TCGv gen_dest_gpr(DisasContext *dc, int reg)
{
if (reg == 0 || reg >= 8) {
return get_temp_tl(dc);
if (reg > 0) {
assert(reg < 32);
return cpu_regs[reg];
} else {
return cpu_gregs[reg];
return get_temp_tl(dc);
}
}
@ -2158,9 +2154,13 @@ static inline void gen_ldda_asi(DisasContext *dc, TCGv hi, TCGv addr,
tcg_temp_free_i32(r_size);
tcg_temp_free_i32(r_asi);
t = gen_dest_gpr(dc, rd + 1);
/* ??? Work around an apparent bug in Ubuntu gcc 4.8.2-10ubuntu2+12,
whereby "rd + 1" elicits "error: array subscript is above array".
Since we have already asserted that rd is even, the semantics
are unchanged. */
t = gen_dest_gpr(dc, rd | 1);
tcg_gen_trunc_i64_tl(t, t64);
gen_store_gpr(dc, rd + 1, t);
gen_store_gpr(dc, rd | 1, t);
tcg_gen_shri_i64(t64, t64, 32);
tcg_gen_trunc_i64_tl(hi, t64);
@ -5330,8 +5330,11 @@ void gen_intermediate_code(CPUSPARCState * env, TranslationBlock * tb)
void gen_intermediate_code_init(CPUSPARCState *env)
{
static int inited;
static const char gregnames[8][4] = {
static const char gregnames[32][4] = {
"g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",
"o0", "o1", "o2", "o3", "o4", "o5", "o6", "o7",
"l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",
"i0", "i1", "i2", "i3", "i4", "i5", "i6", "i7",
};
static const char fregnames[32][4] = {
"f0", "f2", "f4", "f6", "f8", "f10", "f12", "f14",
@ -5401,11 +5404,17 @@ void gen_intermediate_code_init(CPUSPARCState *env)
*rtl[i].ptr = tcg_global_mem_new(cpu_env, rtl[i].off, rtl[i].name);
}
TCGV_UNUSED(cpu_gregs[0]);
TCGV_UNUSED(cpu_regs[0]);
for (i = 1; i < 8; ++i) {
cpu_gregs[i] = tcg_global_mem_new(cpu_env,
offsetof(CPUSPARCState, gregs[i]),
gregnames[i]);
cpu_regs[i] = tcg_global_mem_new(cpu_env,
offsetof(CPUSPARCState, gregs[i]),
gregnames[i]);
}
for (i = 8; i < 32; ++i) {
cpu_regs[i] = tcg_global_mem_new(cpu_regwptr,
(i - 8) * sizeof(target_ulong),
gregnames[i]);
}
for (i = 0; i < TARGET_DPREGS; i++) {