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-rw-r--r--target/m68k/cpu.h1
-rw-r--r--target/m68k/helper.h7
-rw-r--r--target/m68k/op_helper.c185
-rw-r--r--target/m68k/translate.c142
4 files changed, 333 insertions, 2 deletions
diff --git a/target/m68k/cpu.h b/target/m68k/cpu.h
index 0b4ed7b8a6..fc1f16fc80 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 17ec342346..eb119456a5 100644
--- a/target/m68k/helper.h
+++ b/target/m68k/helper.h
@@ -50,3 +50,10 @@ 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_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)
diff --git a/target/m68k/op_helper.c b/target/m68k/op_helper.c
index e56b815d73..51b9e00f5e 100644
--- a/target/m68k/op_helper.c
+++ b/target/m68k/op_helper.c
@@ -469,3 +469,188 @@ 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;
+}
diff --git a/target/m68k/translate.c b/target/m68k/translate.c
index 148791481b..fe44fda1d9 100644
--- a/target/m68k/translate.c
+++ b/target/m68k/translate.c
@@ -711,10 +711,17 @@ 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));
@@ -3569,6 +3576,49 @@ DISAS_INSN(bfext_reg)
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);
@@ -3634,6 +3684,54 @@ DISAS_INSN(bfop_reg)
tcg_temp_free(mask);
}
+DISAS_INSN(bfop_mem)
+{
+ int ext = read_im16(env, s);
+ 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));
+ }
+
+ 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 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);
@@ -3708,6 +3806,40 @@ DISAS_INSN(bfins_reg)
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;
@@ -4799,11 +4931,17 @@ 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_reg, e9c0, fdf8, BITFIELD); /* bfextu & bfexts */
+ 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, 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);
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-12-22 19:49:15 +0100