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-rw-r--r--target/m68k/cpu.h1
-rw-r--r--target/m68k/helper.h10
-rw-r--r--target/m68k/op_helper.c206
-rw-r--r--target/m68k/translate.c427
4 files changed, 636 insertions, 8 deletions
diff --git a/target/m68k/cpu.h b/target/m68k/cpu.h
index 0b4ed7b..fc1f16f 100644
--- a/target/m68k/cpu.h
+++ b/target/m68k/cpu.h
@@ -37,6 +37,7 @@
#define OS_DOUBLE 4
#define OS_EXTENDED 5
#define OS_PACKED 6
+#define OS_UNSIZED 7
#define MAX_QREGS 32
diff --git a/target/m68k/helper.h b/target/m68k/helper.h
index 17ec342..d7a4bf1 100644
--- a/target/m68k/helper.h
+++ b/target/m68k/helper.h
@@ -50,3 +50,13 @@ DEF_HELPER_2(flush_flags, void, env, i32)
DEF_HELPER_2(set_ccr, void, env, i32)
DEF_HELPER_FLAGS_1(get_ccr, TCG_CALL_NO_WG_SE, i32, env)
DEF_HELPER_2(raise_exception, void, env, i32)
+
+DEF_HELPER_FLAGS_3(bfffo_reg, TCG_CALL_NO_RWG_SE, i32, i32, i32, i32)
+
+DEF_HELPER_FLAGS_4(bfexts_mem, TCG_CALL_NO_WG, i32, env, i32, s32, i32)
+DEF_HELPER_FLAGS_4(bfextu_mem, TCG_CALL_NO_WG, i64, env, i32, s32, i32)
+DEF_HELPER_FLAGS_5(bfins_mem, TCG_CALL_NO_WG, i32, env, i32, i32, s32, i32)
+DEF_HELPER_FLAGS_4(bfchg_mem, TCG_CALL_NO_WG, i32, env, i32, s32, i32)
+DEF_HELPER_FLAGS_4(bfclr_mem, TCG_CALL_NO_WG, i32, env, i32, s32, i32)
+DEF_HELPER_FLAGS_4(bfset_mem, TCG_CALL_NO_WG, i32, env, i32, s32, i32)
+DEF_HELPER_FLAGS_4(bfffo_mem, TCG_CALL_NO_WG, i64, env, i32, s32, i32)
diff --git a/target/m68k/op_helper.c b/target/m68k/op_helper.c
index e56b815..7b5126c 100644
--- a/target/m68k/op_helper.c
+++ b/target/m68k/op_helper.c
@@ -469,3 +469,209 @@ void HELPER(cas2l)(CPUM68KState *env, uint32_t regs, uint32_t a1, uint32_t a2)
env->dregs[Dc1] = l1;
env->dregs[Dc2] = l2;
}
+
+struct bf_data {
+ uint32_t addr;
+ uint32_t bofs;
+ uint32_t blen;
+ uint32_t len;
+};
+
+static struct bf_data bf_prep(uint32_t addr, int32_t ofs, uint32_t len)
+{
+ int bofs, blen;
+
+ /* Bound length; map 0 to 32. */
+ len = ((len - 1) & 31) + 1;
+
+ /* Note that ofs is signed. */
+ addr += ofs / 8;
+ bofs = ofs % 8;
+ if (bofs < 0) {
+ bofs += 8;
+ addr -= 1;
+ }
+
+ /* Compute the number of bytes required (minus one) to
+ satisfy the bitfield. */
+ blen = (bofs + len - 1) / 8;
+
+ /* Canonicalize the bit offset for data loaded into a 64-bit big-endian
+ word. For the cases where BLEN is not a power of 2, adjust ADDR so
+ that we can use the next power of two sized load without crossing a
+ page boundary, unless the field itself crosses the boundary. */
+ switch (blen) {
+ case 0:
+ bofs += 56;
+ break;
+ case 1:
+ bofs += 48;
+ break;
+ case 2:
+ if (addr & 1) {
+ bofs += 8;
+ addr -= 1;
+ }
+ /* fallthru */
+ case 3:
+ bofs += 32;
+ break;
+ case 4:
+ if (addr & 3) {
+ bofs += 8 * (addr & 3);
+ addr &= -4;
+ }
+ break;
+ default:
+ g_assert_not_reached();
+ }
+
+ return (struct bf_data){
+ .addr = addr,
+ .bofs = bofs,
+ .blen = blen,
+ .len = len,
+ };
+}
+
+static uint64_t bf_load(CPUM68KState *env, uint32_t addr, int blen,
+ uintptr_t ra)
+{
+ switch (blen) {
+ case 0:
+ return cpu_ldub_data_ra(env, addr, ra);
+ case 1:
+ return cpu_lduw_data_ra(env, addr, ra);
+ case 2:
+ case 3:
+ return cpu_ldl_data_ra(env, addr, ra);
+ case 4:
+ return cpu_ldq_data_ra(env, addr, ra);
+ default:
+ g_assert_not_reached();
+ }
+}
+
+static void bf_store(CPUM68KState *env, uint32_t addr, int blen,
+ uint64_t data, uintptr_t ra)
+{
+ switch (blen) {
+ case 0:
+ cpu_stb_data_ra(env, addr, data, ra);
+ break;
+ case 1:
+ cpu_stw_data_ra(env, addr, data, ra);
+ break;
+ case 2:
+ case 3:
+ cpu_stl_data_ra(env, addr, data, ra);
+ break;
+ case 4:
+ cpu_stq_data_ra(env, addr, data, ra);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+}
+
+uint32_t HELPER(bfexts_mem)(CPUM68KState *env, uint32_t addr,
+ int32_t ofs, uint32_t len)
+{
+ uintptr_t ra = GETPC();
+ struct bf_data d = bf_prep(addr, ofs, len);
+ uint64_t data = bf_load(env, d.addr, d.blen, ra);
+
+ return (int64_t)(data << d.bofs) >> (64 - d.len);
+}
+
+uint64_t HELPER(bfextu_mem)(CPUM68KState *env, uint32_t addr,
+ int32_t ofs, uint32_t len)
+{
+ uintptr_t ra = GETPC();
+ struct bf_data d = bf_prep(addr, ofs, len);
+ uint64_t data = bf_load(env, d.addr, d.blen, ra);
+
+ /* Put CC_N at the top of the high word; put the zero-extended value
+ at the bottom of the low word. */
+ data <<= d.bofs;
+ data >>= 64 - d.len;
+ data |= data << (64 - d.len);
+
+ return data;
+}
+
+uint32_t HELPER(bfins_mem)(CPUM68KState *env, uint32_t addr, uint32_t val,
+ int32_t ofs, uint32_t len)
+{
+ uintptr_t ra = GETPC();
+ struct bf_data d = bf_prep(addr, ofs, len);
+ uint64_t data = bf_load(env, d.addr, d.blen, ra);
+ uint64_t mask = -1ull << (64 - d.len) >> d.bofs;
+
+ data = (data & ~mask) | (((uint64_t)val << (64 - d.len)) >> d.bofs);
+
+ bf_store(env, d.addr, d.blen, data, ra);
+
+ /* The field at the top of the word is also CC_N for CC_OP_LOGIC. */
+ return val << (32 - d.len);
+}
+
+uint32_t HELPER(bfchg_mem)(CPUM68KState *env, uint32_t addr,
+ int32_t ofs, uint32_t len)
+{
+ uintptr_t ra = GETPC();
+ struct bf_data d = bf_prep(addr, ofs, len);
+ uint64_t data = bf_load(env, d.addr, d.blen, ra);
+ uint64_t mask = -1ull << (64 - d.len) >> d.bofs;
+
+ bf_store(env, d.addr, d.blen, data ^ mask, ra);
+
+ return ((data & mask) << d.bofs) >> 32;
+}
+
+uint32_t HELPER(bfclr_mem)(CPUM68KState *env, uint32_t addr,
+ int32_t ofs, uint32_t len)
+{
+ uintptr_t ra = GETPC();
+ struct bf_data d = bf_prep(addr, ofs, len);
+ uint64_t data = bf_load(env, d.addr, d.blen, ra);
+ uint64_t mask = -1ull << (64 - d.len) >> d.bofs;
+
+ bf_store(env, d.addr, d.blen, data & ~mask, ra);
+
+ return ((data & mask) << d.bofs) >> 32;
+}
+
+uint32_t HELPER(bfset_mem)(CPUM68KState *env, uint32_t addr,
+ int32_t ofs, uint32_t len)
+{
+ uintptr_t ra = GETPC();
+ struct bf_data d = bf_prep(addr, ofs, len);
+ uint64_t data = bf_load(env, d.addr, d.blen, ra);
+ uint64_t mask = -1ull << (64 - d.len) >> d.bofs;
+
+ bf_store(env, d.addr, d.blen, data | mask, ra);
+
+ return ((data & mask) << d.bofs) >> 32;
+}
+
+uint32_t HELPER(bfffo_reg)(uint32_t n, uint32_t ofs, uint32_t len)
+{
+ return (n ? clz32(n) : len) + ofs;
+}
+
+uint64_t HELPER(bfffo_mem)(CPUM68KState *env, uint32_t addr,
+ int32_t ofs, uint32_t len)
+{
+ uintptr_t ra = GETPC();
+ struct bf_data d = bf_prep(addr, ofs, len);
+ uint64_t data = bf_load(env, d.addr, d.blen, ra);
+ uint64_t mask = -1ull << (64 - d.len) >> d.bofs;
+ uint64_t n = (data & mask) << d.bofs;
+ uint32_t ffo = helper_bfffo_reg(n >> 32, ofs, d.len);
+
+ /* Return FFO in the low word and N in the high word.
+ Note that because of MASK and the shift, the low word
+ is already zero. */
+ return n | ffo;
+}
diff --git a/target/m68k/translate.c b/target/m68k/translate.c
index 5329317..9f60fbc 100644
--- a/target/m68k/translate.c
+++ b/target/m68k/translate.c
@@ -595,18 +595,19 @@ static void gen_flush_flags(DisasContext *s)
case CC_OP_DYNAMIC:
gen_helper_flush_flags(cpu_env, QREG_CC_OP);
+ s->cc_op_synced = 1;
break;
default:
t0 = tcg_const_i32(s->cc_op);
gen_helper_flush_flags(cpu_env, t0);
tcg_temp_free(t0);
+ s->cc_op_synced = 1;
break;
}
/* Note that flush_flags also assigned to env->cc_op. */
s->cc_op = CC_OP_FLAGS;
- s->cc_op_synced = 1;
}
static inline TCGv gen_extend(TCGv val, int opsize, int sign)
@@ -711,13 +712,25 @@ static TCGv gen_lea_mode(CPUM68KState *env, DisasContext *s,
case 0: /* Data register direct. */
case 1: /* Address register direct. */
return NULL_QREG;
- case 2: /* Indirect register */
case 3: /* Indirect postincrement. */
+ if (opsize == OS_UNSIZED) {
+ return NULL_QREG;
+ }
+ /* fallthru */
+ case 2: /* Indirect register */
return get_areg(s, reg0);
case 4: /* Indirect predecrememnt. */
+ if (opsize == OS_UNSIZED) {
+ return NULL_QREG;
+ }
reg = get_areg(s, reg0);
tmp = tcg_temp_new();
- tcg_gen_subi_i32(tmp, reg, opsize_bytes(opsize));
+ if (reg0 == 7 && opsize == OS_BYTE &&
+ m68k_feature(s->env, M68K_FEATURE_M68000)) {
+ tcg_gen_subi_i32(tmp, reg, 2);
+ } else {
+ tcg_gen_subi_i32(tmp, reg, opsize_bytes(opsize));
+ }
return tmp;
case 5: /* Indirect displacement. */
reg = get_areg(s, reg0);
@@ -793,7 +806,12 @@ static TCGv gen_ea_mode(CPUM68KState *env, DisasContext *s, int mode, int reg0,
result = gen_ldst(s, opsize, reg, val, what);
if (what == EA_STORE || !addrp) {
TCGv tmp = tcg_temp_new();
- tcg_gen_addi_i32(tmp, reg, opsize_bytes(opsize));
+ if (reg0 == 7 && opsize == OS_BYTE &&
+ m68k_feature(s->env, M68K_FEATURE_M68000)) {
+ tcg_gen_addi_i32(tmp, reg, 2);
+ } else {
+ tcg_gen_addi_i32(tmp, reg, opsize_bytes(opsize));
+ }
delay_set_areg(s, reg0, tmp, true);
}
return result;
@@ -1794,9 +1812,16 @@ DISAS_INSN(bitop_im)
op = (insn >> 6) & 3;
bitnum = read_im16(env, s);
- if (bitnum & 0xff00) {
- disas_undef(env, s, insn);
- return;
+ if (m68k_feature(s->env, M68K_FEATURE_M68000)) {
+ if (bitnum & 0xfe00) {
+ disas_undef(env, s, insn);
+ return;
+ }
+ } else {
+ if (bitnum & 0xff00) {
+ disas_undef(env, s, insn);
+ return;
+ }
}
SRC_EA(env, src1, opsize, 0, op ? &addr: NULL);
@@ -1919,7 +1944,6 @@ DISAS_INSN(cas)
default:
g_assert_not_reached();
}
- opc |= MO_ALIGN;
ext = read_im16(env, s);
@@ -1948,6 +1972,15 @@ DISAS_INSN(cas)
gen_partset_reg(opsize, DREG(ext, 0), load);
tcg_temp_free(load);
+
+ switch (extract32(insn, 3, 3)) {
+ case 3: /* Indirect postincrement. */
+ tcg_gen_addi_i32(AREG(insn, 0), addr, opsize_bytes(opsize));
+ break;
+ case 4: /* Indirect predecrememnt. */
+ tcg_gen_mov_i32(AREG(insn, 0), addr);
+ break;
+ }
}
DISAS_INSN(cas2w)
@@ -3504,6 +3537,370 @@ DISAS_INSN(rotate_mem)
set_cc_op(s, CC_OP_FLAGS);
}
+DISAS_INSN(bfext_reg)
+{
+ int ext = read_im16(env, s);
+ int is_sign = insn & 0x200;
+ TCGv src = DREG(insn, 0);
+ TCGv dst = DREG(ext, 12);
+ int len = ((extract32(ext, 0, 5) - 1) & 31) + 1;
+ int ofs = extract32(ext, 6, 5); /* big bit-endian */
+ int pos = 32 - ofs - len; /* little bit-endian */
+ TCGv tmp = tcg_temp_new();
+ TCGv shift;
+
+ /* In general, we're going to rotate the field so that it's at the
+ top of the word and then right-shift by the compliment of the
+ width to extend the field. */
+ if (ext & 0x20) {
+ /* Variable width. */
+ if (ext & 0x800) {
+ /* Variable offset. */
+ tcg_gen_andi_i32(tmp, DREG(ext, 6), 31);
+ tcg_gen_rotl_i32(tmp, src, tmp);
+ } else {
+ tcg_gen_rotli_i32(tmp, src, ofs);
+ }
+
+ shift = tcg_temp_new();
+ tcg_gen_neg_i32(shift, DREG(ext, 0));
+ tcg_gen_andi_i32(shift, shift, 31);
+ tcg_gen_sar_i32(QREG_CC_N, tmp, shift);
+ if (is_sign) {
+ tcg_gen_mov_i32(dst, QREG_CC_N);
+ } else {
+ tcg_gen_shr_i32(dst, tmp, shift);
+ }
+ tcg_temp_free(shift);
+ } else {
+ /* Immediate width. */
+ if (ext & 0x800) {
+ /* Variable offset */
+ tcg_gen_andi_i32(tmp, DREG(ext, 6), 31);
+ tcg_gen_rotl_i32(tmp, src, tmp);
+ src = tmp;
+ pos = 32 - len;
+ } else {
+ /* Immediate offset. If the field doesn't wrap around the
+ end of the word, rely on (s)extract completely. */
+ if (pos < 0) {
+ tcg_gen_rotli_i32(tmp, src, ofs);
+ src = tmp;
+ pos = 32 - len;
+ }
+ }
+
+ tcg_gen_sextract_i32(QREG_CC_N, src, pos, len);
+ if (is_sign) {
+ tcg_gen_mov_i32(dst, QREG_CC_N);
+ } else {
+ tcg_gen_extract_i32(dst, src, pos, len);
+ }
+ }
+
+ tcg_temp_free(tmp);
+ set_cc_op(s, CC_OP_LOGIC);
+}
+
+DISAS_INSN(bfext_mem)
+{
+ int ext = read_im16(env, s);
+ int is_sign = insn & 0x200;
+ TCGv dest = DREG(ext, 12);
+ TCGv addr, len, ofs;
+
+ addr = gen_lea(env, s, insn, OS_UNSIZED);
+ if (IS_NULL_QREG(addr)) {
+ gen_addr_fault(s);
+ return;
+ }
+
+ if (ext & 0x20) {
+ len = DREG(ext, 0);
+ } else {
+ len = tcg_const_i32(extract32(ext, 0, 5));
+ }
+ if (ext & 0x800) {
+ ofs = DREG(ext, 6);
+ } else {
+ ofs = tcg_const_i32(extract32(ext, 6, 5));
+ }
+
+ if (is_sign) {
+ gen_helper_bfexts_mem(dest, cpu_env, addr, ofs, len);
+ tcg_gen_mov_i32(QREG_CC_N, dest);
+ } else {
+ TCGv_i64 tmp = tcg_temp_new_i64();
+ gen_helper_bfextu_mem(tmp, cpu_env, addr, ofs, len);
+ tcg_gen_extr_i64_i32(dest, QREG_CC_N, tmp);
+ tcg_temp_free_i64(tmp);
+ }
+ set_cc_op(s, CC_OP_LOGIC);
+
+ if (!(ext & 0x20)) {
+ tcg_temp_free(len);
+ }
+ if (!(ext & 0x800)) {
+ tcg_temp_free(ofs);
+ }
+}
+
+DISAS_INSN(bfop_reg)
+{
+ int ext = read_im16(env, s);
+ TCGv src = DREG(insn, 0);
+ int len = ((extract32(ext, 0, 5) - 1) & 31) + 1;
+ int ofs = extract32(ext, 6, 5); /* big bit-endian */
+ TCGv mask, tofs, tlen;
+
+ TCGV_UNUSED(tofs);
+ TCGV_UNUSED(tlen);
+ if ((insn & 0x0f00) == 0x0d00) { /* bfffo */
+ tofs = tcg_temp_new();
+ tlen = tcg_temp_new();
+ }
+
+ if ((ext & 0x820) == 0) {
+ /* Immediate width and offset. */
+ uint32_t maski = 0x7fffffffu >> (len - 1);
+ if (ofs + len <= 32) {
+ tcg_gen_shli_i32(QREG_CC_N, src, ofs);
+ } else {
+ tcg_gen_rotli_i32(QREG_CC_N, src, ofs);
+ }
+ tcg_gen_andi_i32(QREG_CC_N, QREG_CC_N, ~maski);
+ mask = tcg_const_i32(ror32(maski, ofs));
+ if (!TCGV_IS_UNUSED(tofs)) {
+ tcg_gen_movi_i32(tofs, ofs);
+ tcg_gen_movi_i32(tlen, len);
+ }
+ } else {
+ TCGv tmp = tcg_temp_new();
+ if (ext & 0x20) {
+ /* Variable width */
+ tcg_gen_subi_i32(tmp, DREG(ext, 0), 1);
+ tcg_gen_andi_i32(tmp, tmp, 31);
+ mask = tcg_const_i32(0x7fffffffu);
+ tcg_gen_shr_i32(mask, mask, tmp);
+ if (!TCGV_IS_UNUSED(tlen)) {
+ tcg_gen_addi_i32(tlen, tmp, 1);
+ }
+ } else {
+ /* Immediate width */
+ mask = tcg_const_i32(0x7fffffffu >> (len - 1));
+ if (!TCGV_IS_UNUSED(tlen)) {
+ tcg_gen_movi_i32(tlen, len);
+ }
+ }
+ if (ext & 0x800) {
+ /* Variable offset */
+ tcg_gen_andi_i32(tmp, DREG(ext, 6), 31);
+ tcg_gen_rotl_i32(QREG_CC_N, src, tmp);
+ tcg_gen_andc_i32(QREG_CC_N, QREG_CC_N, mask);
+ tcg_gen_rotr_i32(mask, mask, tmp);
+ if (!TCGV_IS_UNUSED(tofs)) {
+ tcg_gen_mov_i32(tofs, tmp);
+ }
+ } else {
+ /* Immediate offset (and variable width) */
+ tcg_gen_rotli_i32(QREG_CC_N, src, ofs);
+ tcg_gen_andc_i32(QREG_CC_N, QREG_CC_N, mask);
+ tcg_gen_rotri_i32(mask, mask, ofs);
+ if (!TCGV_IS_UNUSED(tofs)) {
+ tcg_gen_movi_i32(tofs, ofs);
+ }
+ }
+ tcg_temp_free(tmp);
+ }
+ set_cc_op(s, CC_OP_LOGIC);
+
+ switch (insn & 0x0f00) {
+ case 0x0a00: /* bfchg */
+ tcg_gen_eqv_i32(src, src, mask);
+ break;
+ case 0x0c00: /* bfclr */
+ tcg_gen_and_i32(src, src, mask);
+ break;
+ case 0x0d00: /* bfffo */
+ gen_helper_bfffo_reg(DREG(ext, 12), QREG_CC_N, tofs, tlen);
+ tcg_temp_free(tlen);
+ tcg_temp_free(tofs);
+ break;
+ case 0x0e00: /* bfset */
+ tcg_gen_orc_i32(src, src, mask);
+ break;
+ case 0x0800: /* bftst */
+ /* flags already set; no other work to do. */
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ tcg_temp_free(mask);
+}
+
+DISAS_INSN(bfop_mem)
+{
+ int ext = read_im16(env, s);
+ TCGv addr, len, ofs;
+ TCGv_i64 t64;
+
+ addr = gen_lea(env, s, insn, OS_UNSIZED);
+ if (IS_NULL_QREG(addr)) {
+ gen_addr_fault(s);
+ return;
+ }
+
+ if (ext & 0x20) {
+ len = DREG(ext, 0);
+ } else {
+ len = tcg_const_i32(extract32(ext, 0, 5));
+ }
+ if (ext & 0x800) {
+ ofs = DREG(ext, 6);
+ } else {
+ ofs = tcg_const_i32(extract32(ext, 6, 5));
+ }
+
+ switch (insn & 0x0f00) {
+ case 0x0a00: /* bfchg */
+ gen_helper_bfchg_mem(QREG_CC_N, cpu_env, addr, ofs, len);
+ break;
+ case 0x0c00: /* bfclr */
+ gen_helper_bfclr_mem(QREG_CC_N, cpu_env, addr, ofs, len);
+ break;
+ case 0x0d00: /* bfffo */
+ t64 = tcg_temp_new_i64();
+ gen_helper_bfffo_mem(t64, cpu_env, addr, ofs, len);
+ tcg_gen_extr_i64_i32(DREG(ext, 12), QREG_CC_N, t64);
+ tcg_temp_free_i64(t64);
+ break;
+ case 0x0e00: /* bfset */
+ gen_helper_bfset_mem(QREG_CC_N, cpu_env, addr, ofs, len);
+ break;
+ case 0x0800: /* bftst */
+ gen_helper_bfexts_mem(QREG_CC_N, cpu_env, addr, ofs, len);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ set_cc_op(s, CC_OP_LOGIC);
+
+ if (!(ext & 0x20)) {
+ tcg_temp_free(len);
+ }
+ if (!(ext & 0x800)) {
+ tcg_temp_free(ofs);
+ }
+}
+
+DISAS_INSN(bfins_reg)
+{
+ int ext = read_im16(env, s);
+ TCGv dst = DREG(insn, 0);
+ TCGv src = DREG(ext, 12);
+ int len = ((extract32(ext, 0, 5) - 1) & 31) + 1;
+ int ofs = extract32(ext, 6, 5); /* big bit-endian */
+ int pos = 32 - ofs - len; /* little bit-endian */
+ TCGv tmp;
+
+ tmp = tcg_temp_new();
+
+ if (ext & 0x20) {
+ /* Variable width */
+ tcg_gen_neg_i32(tmp, DREG(ext, 0));
+ tcg_gen_andi_i32(tmp, tmp, 31);
+ tcg_gen_shl_i32(QREG_CC_N, src, tmp);
+ } else {
+ /* Immediate width */
+ tcg_gen_shli_i32(QREG_CC_N, src, 32 - len);
+ }
+ set_cc_op(s, CC_OP_LOGIC);
+
+ /* Immediate width and offset */
+ if ((ext & 0x820) == 0) {
+ /* Check for suitability for deposit. */
+ if (pos >= 0) {
+ tcg_gen_deposit_i32(dst, dst, src, pos, len);
+ } else {
+ uint32_t maski = -2U << (len - 1);
+ uint32_t roti = (ofs + len) & 31;
+ tcg_gen_andi_i32(tmp, src, ~maski);
+ tcg_gen_rotri_i32(tmp, tmp, roti);
+ tcg_gen_andi_i32(dst, dst, ror32(maski, roti));
+ tcg_gen_or_i32(dst, dst, tmp);
+ }
+ } else {
+ TCGv mask = tcg_temp_new();
+ TCGv rot = tcg_temp_new();
+
+ if (ext & 0x20) {
+ /* Variable width */
+ tcg_gen_subi_i32(rot, DREG(ext, 0), 1);
+ tcg_gen_andi_i32(rot, rot, 31);
+ tcg_gen_movi_i32(mask, -2);
+ tcg_gen_shl_i32(mask, mask, rot);
+ tcg_gen_mov_i32(rot, DREG(ext, 0));
+ tcg_gen_andc_i32(tmp, src, mask);
+ } else {
+ /* Immediate width (variable offset) */
+ uint32_t maski = -2U << (len - 1);
+ tcg_gen_andi_i32(tmp, src, ~maski);
+ tcg_gen_movi_i32(mask, maski);
+ tcg_gen_movi_i32(rot, len & 31);
+ }
+ if (ext & 0x800) {
+ /* Variable offset */
+ tcg_gen_add_i32(rot, rot, DREG(ext, 6));
+ } else {
+ /* Immediate offset (variable width) */
+ tcg_gen_addi_i32(rot, rot, ofs);
+ }
+ tcg_gen_andi_i32(rot, rot, 31);
+ tcg_gen_rotr_i32(mask, mask, rot);
+ tcg_gen_rotr_i32(tmp, tmp, rot);
+ tcg_gen_and_i32(dst, dst, mask);
+ tcg_gen_or_i32(dst, dst, tmp);
+
+ tcg_temp_free(rot);
+ tcg_temp_free(mask);
+ }
+ tcg_temp_free(tmp);
+}
+
+DISAS_INSN(bfins_mem)
+{
+ int ext = read_im16(env, s);
+ TCGv src = DREG(ext, 12);
+ TCGv addr, len, ofs;
+
+ addr = gen_lea(env, s, insn, OS_UNSIZED);
+ if (IS_NULL_QREG(addr)) {
+ gen_addr_fault(s);
+ return;
+ }
+
+ if (ext & 0x20) {
+ len = DREG(ext, 0);
+ } else {
+ len = tcg_const_i32(extract32(ext, 0, 5));
+ }
+ if (ext & 0x800) {
+ ofs = DREG(ext, 6);
+ } else {
+ ofs = tcg_const_i32(extract32(ext, 6, 5));
+ }
+
+ gen_helper_bfins_mem(QREG_CC_N, cpu_env, addr, src, ofs, len);
+ set_cc_op(s, CC_OP_LOGIC);
+
+ if (!(ext & 0x20)) {
+ tcg_temp_free(len);
+ }
+ if (!(ext & 0x800)) {
+ tcg_temp_free(ofs);
+ }
+}
+
DISAS_INSN(ff1)
{
TCGv reg;
@@ -4595,6 +4992,20 @@ void register_m68k_insns (CPUM68KState *env)
INSN(rotate8_reg, e030, f0f0, M68000);
INSN(rotate16_reg, e070, f0f0, M68000);
INSN(rotate_mem, e4c0, fcc0, M68000);
+ INSN(bfext_mem, e9c0, fdc0, BITFIELD); /* bfextu & bfexts */
+ INSN(bfext_reg, e9c0, fdf8, BITFIELD);
+ INSN(bfins_mem, efc0, ffc0, BITFIELD);
+ INSN(bfins_reg, efc0, fff8, BITFIELD);
+ INSN(bfop_mem, eac0, ffc0, BITFIELD); /* bfchg */
+ INSN(bfop_reg, eac0, fff8, BITFIELD); /* bfchg */
+ INSN(bfop_mem, ecc0, ffc0, BITFIELD); /* bfclr */
+ INSN(bfop_reg, ecc0, fff8, BITFIELD); /* bfclr */
+ INSN(bfop_mem, edc0, ffc0, BITFIELD); /* bfffo */
+ INSN(bfop_reg, edc0, fff8, BITFIELD); /* bfffo */
+ INSN(bfop_mem, eec0, ffc0, BITFIELD); /* bfset */
+ INSN(bfop_reg, eec0, fff8, BITFIELD); /* bfset */
+ INSN(bfop_mem, e8c0, ffc0, BITFIELD); /* bftst */
+ INSN(bfop_reg, e8c0, fff8, BITFIELD); /* bftst */
INSN(undef_fpu, f000, f000, CF_ISA_A);
INSN(fpu, f200, ffc0, CF_FPU);
INSN(fbcc, f280, ffc0, CF_FPU);
generated by cgit v1.1 at 2024-12-27 09:23:54 +0000