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target/xtensa: reorganize access to boolean registers 

libisa represents boolean registers b0..b16 as a BR register file and as
BR4 and BR8 register groups. Add these register files and use
OpcodeArg::{in,out} parameters to access boolean registers in
translators.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2019-02-14 13:27:50 -08:00
parent 7aa7834187
commit 575e962a01
1 changed files with 42 additions and 8 deletions
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50
target/xtensa/translate.c
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@ -80,6 +80,9 @@ static TCGv_i32 cpu_pc;
static TCGv_i32 cpu_R[16];
static TCGv_i32 cpu_FR[16];
static TCGv_i32 cpu_MR[4];
static TCGv_i32 cpu_BR[16];
static TCGv_i32 cpu_BR4[4];
static TCGv_i32 cpu_BR8[2];
static TCGv_i32 cpu_SR[256];
static TCGv_i32 cpu_UR[256];
static TCGv_i32 cpu_windowbase_next;
@ -227,6 +230,12 @@ void xtensa_translate_init(void)
static const char * const mregnames[] = {
"m0", "m1", "m2", "m3",
};
static const char * const bregnames[] = {
"b0", "b1", "b2", "b3",
"b4", "b5", "b6", "b7",
"b8", "b9", "b10", "b11",
"b12", "b13", "b14", "b15",
};
int i;
cpu_pc = tcg_global_mem_new_i32(cpu_env,
@ -252,6 +261,25 @@ void xtensa_translate_init(void)
mregnames[i]);
}
for (i = 0; i < 16; i++) {
cpu_BR[i] = tcg_global_mem_new_i32(cpu_env,
offsetof(CPUXtensaState,
sregs[BR]),
bregnames[i]);
if (i % 4 == 0) {
cpu_BR4[i / 4] = tcg_global_mem_new_i32(cpu_env,
offsetof(CPUXtensaState,
sregs[BR]),
bregnames[i]);
}
if (i % 8 == 0) {
cpu_BR8[i / 8] = tcg_global_mem_new_i32(cpu_env,
offsetof(CPUXtensaState,
sregs[BR]),
bregnames[i]);
}
}
for (i = 0; i < 256; ++i) {
if (sregnames[i].name) {
cpu_SR[i] = tcg_global_mem_new_i32(cpu_env,
@ -284,6 +312,12 @@ void **xtensa_get_regfile_by_name(const char *name)
(void *)"MR", (void *)cpu_MR);
g_hash_table_insert(xtensa_regfile_table,
(void *)"FR", (void *)cpu_FR);
g_hash_table_insert(xtensa_regfile_table,
(void *)"BR", (void *)cpu_BR);
g_hash_table_insert(xtensa_regfile_table,
(void *)"BR4", (void *)cpu_BR4);
g_hash_table_insert(xtensa_regfile_table,
(void *)"BR8", (void *)cpu_BR8);
}
return (void **)g_hash_table_lookup(xtensa_regfile_table, (void *)name);
}
@ -1584,14 +1618,14 @@ static void translate_all(DisasContext *dc, const OpcodeArg arg[],
TCGv_i32 mask = tcg_const_i32(((1 << shift) - 1) << arg[1].imm);
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_and_i32(tmp, cpu_SR[BR], mask);
tcg_gen_and_i32(tmp, arg[1].in, mask);
if (par[0]) {
tcg_gen_addi_i32(tmp, tmp, 1 << arg[1].imm);
} else {
tcg_gen_add_i32(tmp, tmp, mask);
}
tcg_gen_shri_i32(tmp, tmp, arg[1].imm + shift);
tcg_gen_deposit_i32(cpu_SR[BR], cpu_SR[BR],
tcg_gen_deposit_i32(arg[0].out, arg[0].out,
tmp, arg[0].imm, 1);
tcg_temp_free(mask);
tcg_temp_free(tmp);
@ -1695,10 +1729,10 @@ static void translate_boolean(DisasContext *dc, const OpcodeArg arg[],
TCGv_i32 tmp1 = tcg_temp_new_i32();
TCGv_i32 tmp2 = tcg_temp_new_i32();
tcg_gen_shri_i32(tmp1, cpu_SR[BR], arg[1].imm);
tcg_gen_shri_i32(tmp2, cpu_SR[BR], arg[2].imm);
tcg_gen_shri_i32(tmp1, arg[1].in, arg[1].imm);
tcg_gen_shri_i32(tmp2, arg[2].in, arg[2].imm);
op[par[0]](tmp1, tmp1, tmp2);
tcg_gen_deposit_i32(cpu_SR[BR], cpu_SR[BR], tmp1, arg[0].imm, 1);
tcg_gen_deposit_i32(arg[0].out, arg[0].out, tmp1, arg[0].imm, 1);
tcg_temp_free(tmp1);
tcg_temp_free(tmp2);
}
@ -1708,7 +1742,7 @@ static void translate_bp(DisasContext *dc, const OpcodeArg arg[],
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_andi_i32(tmp, cpu_SR[BR], 1 << arg[0].imm);
tcg_gen_andi_i32(tmp, arg[0].in, 1 << arg[0].imm);
gen_brcondi(dc, par[0], tmp, 0, arg[1].imm);
tcg_temp_free(tmp);
}
@ -2075,7 +2109,7 @@ static void translate_movp(DisasContext *dc, const OpcodeArg arg[],
TCGv_i32 zero = tcg_const_i32(0);
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_andi_i32(tmp, cpu_SR[BR], 1 << arg[2].imm);
tcg_gen_andi_i32(tmp, arg[2].in, 1 << arg[2].imm);
tcg_gen_movcond_i32(par[0],
arg[0].out, tmp, zero,
arg[1].in, arg[0].in);
@ -5297,7 +5331,7 @@ static void translate_movp_s(DisasContext *dc, const OpcodeArg arg[],
TCGv_i32 zero = tcg_const_i32(0);
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_andi_i32(tmp, cpu_SR[BR], 1 << arg[2].imm);
tcg_gen_andi_i32(tmp, arg[2].in, 1 << arg[2].imm);
tcg_gen_movcond_i32(par[0],
arg[0].out, tmp, zero,
arg[1].in, arg[0].in);