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target-hppa: Implement shifts and deposits 

Signed-off-by: Richard Henderson <rth@twiddle.net>
master
Richard Henderson 2016-12-15 14:04:13 -08:00
parent 7ad439df56
commit 0b1347d259
1 changed files with 309 additions and 0 deletions
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309
target/hppa/translate.c
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@ -1719,6 +1719,311 @@ static ExitStatus trans_movb(DisasContext *ctx, uint32_t insn, bool is_imm)
return do_cbranch(ctx, disp, n, &cond);
}
static ExitStatus trans_shrpw_sar(DisasContext *ctx, uint32_t insn,
const DisasInsn *di)
{
unsigned rt = extract32(insn, 0, 5);
unsigned c = extract32(insn, 13, 3);
unsigned r1 = extract32(insn, 16, 5);
unsigned r2 = extract32(insn, 21, 5);
TCGv dest;
if (c) {
nullify_over(ctx);
}
dest = dest_gpr(ctx, rt);
if (r1 == 0) {
tcg_gen_ext32u_tl(dest, load_gpr(ctx, r2));
tcg_gen_shr_tl(dest, dest, cpu_sar);
} else if (r1 == r2) {
TCGv_i32 t32 = tcg_temp_new_i32();
tcg_gen_trunc_tl_i32(t32, load_gpr(ctx, r2));
tcg_gen_rotr_i32(t32, t32, cpu_sar);
tcg_gen_extu_i32_tl(dest, t32);
tcg_temp_free_i32(t32);
} else {
TCGv_i64 t = tcg_temp_new_i64();
TCGv_i64 s = tcg_temp_new_i64();
tcg_gen_concat_tl_i64(t, load_gpr(ctx, r2), load_gpr(ctx, r1));
tcg_gen_extu_tl_i64(s, cpu_sar);
tcg_gen_shr_i64(t, t, s);
tcg_gen_trunc_i64_tl(dest, t);
tcg_temp_free_i64(t);
tcg_temp_free_i64(s);
}
save_gpr(ctx, rt, dest);
/* Install the new nullification. */
cond_free(&ctx->null_cond);
if (c) {
ctx->null_cond = do_sed_cond(c, dest);
}
return nullify_end(ctx, NO_EXIT);
}
static ExitStatus trans_shrpw_imm(DisasContext *ctx, uint32_t insn,
const DisasInsn *di)
{
unsigned rt = extract32(insn, 0, 5);
unsigned cpos = extract32(insn, 5, 5);
unsigned c = extract32(insn, 13, 3);
unsigned r1 = extract32(insn, 16, 5);
unsigned r2 = extract32(insn, 21, 5);
unsigned sa = 31 - cpos;
TCGv dest, t2;
if (c) {
nullify_over(ctx);
}
dest = dest_gpr(ctx, rt);
t2 = load_gpr(ctx, r2);
if (r1 == r2) {
TCGv_i32 t32 = tcg_temp_new_i32();
tcg_gen_trunc_tl_i32(t32, t2);
tcg_gen_rotri_i32(t32, t32, sa);
tcg_gen_extu_i32_tl(dest, t32);
tcg_temp_free_i32(t32);
} else if (r1 == 0) {
tcg_gen_extract_tl(dest, t2, sa, 32 - sa);
} else {
TCGv t0 = tcg_temp_new();
tcg_gen_extract_tl(t0, t2, sa, 32 - sa);
tcg_gen_deposit_tl(dest, t0, cpu_gr[r1], 32 - sa, sa);
tcg_temp_free(t0);
}
save_gpr(ctx, rt, dest);
/* Install the new nullification. */
cond_free(&ctx->null_cond);
if (c) {
ctx->null_cond = do_sed_cond(c, dest);
}
return nullify_end(ctx, NO_EXIT);
}
static ExitStatus trans_extrw_sar(DisasContext *ctx, uint32_t insn,
const DisasInsn *di)
{
unsigned clen = extract32(insn, 0, 5);
unsigned is_se = extract32(insn, 10, 1);
unsigned c = extract32(insn, 13, 3);
unsigned rt = extract32(insn, 16, 5);
unsigned rr = extract32(insn, 21, 5);
unsigned len = 32 - clen;
TCGv dest, src, tmp;
if (c) {
nullify_over(ctx);
}
dest = dest_gpr(ctx, rt);
src = load_gpr(ctx, rr);
tmp = tcg_temp_new();
/* Recall that SAR is using big-endian bit numbering. */
tcg_gen_xori_tl(tmp, cpu_sar, TARGET_LONG_BITS - 1);
if (is_se) {
tcg_gen_sar_tl(dest, src, tmp);
tcg_gen_sextract_tl(dest, dest, 0, len);
} else {
tcg_gen_shr_tl(dest, src, tmp);
tcg_gen_extract_tl(dest, dest, 0, len);
}
tcg_temp_free(tmp);
save_gpr(ctx, rt, dest);
/* Install the new nullification. */
cond_free(&ctx->null_cond);
if (c) {
ctx->null_cond = do_sed_cond(c, dest);
}
return nullify_end(ctx, NO_EXIT);
}
static ExitStatus trans_extrw_imm(DisasContext *ctx, uint32_t insn,
const DisasInsn *di)
{
unsigned clen = extract32(insn, 0, 5);
unsigned pos = extract32(insn, 5, 5);
unsigned is_se = extract32(insn, 10, 1);
unsigned c = extract32(insn, 13, 3);
unsigned rt = extract32(insn, 16, 5);
unsigned rr = extract32(insn, 21, 5);
unsigned len = 32 - clen;
unsigned cpos = 31 - pos;
TCGv dest, src;
if (c) {
nullify_over(ctx);
}
dest = dest_gpr(ctx, rt);
src = load_gpr(ctx, rr);
if (is_se) {
tcg_gen_sextract_tl(dest, src, cpos, len);
} else {
tcg_gen_extract_tl(dest, src, cpos, len);
}
save_gpr(ctx, rt, dest);
/* Install the new nullification. */
cond_free(&ctx->null_cond);
if (c) {
ctx->null_cond = do_sed_cond(c, dest);
}
return nullify_end(ctx, NO_EXIT);
}
static const DisasInsn table_sh_ex[] = {
{ 0xd0000000u, 0xfc001fe0u, trans_shrpw_sar },
{ 0xd0000800u, 0xfc001c00u, trans_shrpw_imm },
{ 0xd0001000u, 0xfc001be0u, trans_extrw_sar },
{ 0xd0001800u, 0xfc001800u, trans_extrw_imm },
};
static ExitStatus trans_depw_imm_c(DisasContext *ctx, uint32_t insn,
const DisasInsn *di)
{
unsigned clen = extract32(insn, 0, 5);
unsigned cpos = extract32(insn, 5, 5);
unsigned nz = extract32(insn, 10, 1);
unsigned c = extract32(insn, 13, 3);
target_long val = low_sextract(insn, 16, 5);
unsigned rt = extract32(insn, 21, 5);
unsigned len = 32 - clen;
target_long mask0, mask1;
TCGv dest;
if (c) {
nullify_over(ctx);
}
if (cpos + len > 32) {
len = 32 - cpos;
}
dest = dest_gpr(ctx, rt);
mask0 = deposit64(0, cpos, len, val);
mask1 = deposit64(-1, cpos, len, val);
if (nz) {
TCGv src = load_gpr(ctx, rt);
if (mask1 != -1) {
tcg_gen_andi_tl(dest, src, mask1);
src = dest;
}
tcg_gen_ori_tl(dest, src, mask0);
} else {
tcg_gen_movi_tl(dest, mask0);
}
save_gpr(ctx, rt, dest);
/* Install the new nullification. */
cond_free(&ctx->null_cond);
if (c) {
ctx->null_cond = do_sed_cond(c, dest);
}
return nullify_end(ctx, NO_EXIT);
}
static ExitStatus trans_depw_imm(DisasContext *ctx, uint32_t insn,
const DisasInsn *di)
{
unsigned clen = extract32(insn, 0, 5);
unsigned cpos = extract32(insn, 5, 5);
unsigned nz = extract32(insn, 10, 1);
unsigned c = extract32(insn, 13, 3);
unsigned rr = extract32(insn, 16, 5);
unsigned rt = extract32(insn, 21, 5);
unsigned rs = nz ? rt : 0;
unsigned len = 32 - clen;
TCGv dest, val;
if (c) {
nullify_over(ctx);
}
if (cpos + len > 32) {
len = 32 - cpos;
}
dest = dest_gpr(ctx, rt);
val = load_gpr(ctx, rr);
if (rs == 0) {
tcg_gen_deposit_z_tl(dest, val, cpos, len);
} else {
tcg_gen_deposit_tl(dest, cpu_gr[rs], val, cpos, len);
}
save_gpr(ctx, rt, dest);
/* Install the new nullification. */
cond_free(&ctx->null_cond);
if (c) {
ctx->null_cond = do_sed_cond(c, dest);
}
return nullify_end(ctx, NO_EXIT);
}
static ExitStatus trans_depw_sar(DisasContext *ctx, uint32_t insn,
const DisasInsn *di)
{
unsigned clen = extract32(insn, 0, 5);
unsigned nz = extract32(insn, 10, 1);
unsigned i = extract32(insn, 12, 1);
unsigned c = extract32(insn, 13, 3);
unsigned rt = extract32(insn, 21, 5);
unsigned rs = nz ? rt : 0;
unsigned len = 32 - clen;
TCGv val, mask, tmp, shift, dest;
unsigned msb = 1U << (len - 1);
if (c) {
nullify_over(ctx);
}
if (i) {
val = load_const(ctx, low_sextract(insn, 16, 5));
} else {
val = load_gpr(ctx, extract32(insn, 16, 5));
}
dest = dest_gpr(ctx, rt);
shift = tcg_temp_new();
tmp = tcg_temp_new();
/* Convert big-endian bit numbering in SAR to left-shift. */
tcg_gen_xori_tl(shift, cpu_sar, TARGET_LONG_BITS - 1);
mask = tcg_const_tl(msb + (msb - 1));
tcg_gen_and_tl(tmp, val, mask);
if (rs) {
tcg_gen_shl_tl(mask, mask, shift);
tcg_gen_shl_tl(tmp, tmp, shift);
tcg_gen_andc_tl(dest, cpu_gr[rs], mask);
tcg_gen_or_tl(dest, dest, tmp);
} else {
tcg_gen_shl_tl(dest, tmp, shift);
}
tcg_temp_free(shift);
tcg_temp_free(mask);
tcg_temp_free(tmp);
save_gpr(ctx, rt, dest);
/* Install the new nullification. */
cond_free(&ctx->null_cond);
if (c) {
ctx->null_cond = do_sed_cond(c, dest);
}
return nullify_end(ctx, NO_EXIT);
}
static const DisasInsn table_depw[] = {
{ 0xd4000000u, 0xfc000be0u, trans_depw_sar },
{ 0xd4000800u, 0xfc001800u, trans_depw_imm },
{ 0xd4001800u, 0xfc001800u, trans_depw_imm_c },
};
static ExitStatus trans_be(DisasContext *ctx, uint32_t insn, bool is_l)
{
unsigned n = extract32(insn, 1, 1);
@ -1874,6 +2179,10 @@ static ExitStatus translate_one(DisasContext *ctx, uint32_t insn)
return trans_movb(ctx, insn, false);
case 0x33:
return trans_movb(ctx, insn, true);
case 0x34:
return translate_table(ctx, insn, table_sh_ex);
case 0x35:
return translate_table(ctx, insn, table_depw);
case 0x38:
return trans_be(ctx, insn, false);
case 0x39: