found_return = 1;
else if (thumb_instruction_restores_sp (insn))
{
- found_stack_adjust = 1;
- if ((insn & 0xfe00) == 0xbd00) /* pop <registers, PC> */
+ if ((insn & 0xff00) == 0xbd00) /* pop <registers, PC> */
found_return = 1;
}
else if (thumb_insn_size (insn) == 4) /* 32-bit Thumb-2 instruction */
if (insn == 0xe8bd) /* ldm.w sp!, <registers> */
{
- found_stack_adjust = 1;
if (insn2 & 0x8000) /* <registers> include PC. */
found_return = 1;
}
else if (insn == 0xf85d /* ldr.w <Rt>, [sp], #4 */
&& (insn2 & 0x0fff) == 0x0b04)
{
- found_stack_adjust = 1;
if ((insn2 & 0xf000) == 0xf000) /* <Rt> is PC. */
found_return = 1;
}
else if ((insn & 0xffbf) == 0xecbd /* vldm sp!, <list> */
&& (insn2 & 0x0e00) == 0x0a00)
- found_stack_adjust = 1;
+ ;
else
break;
}
a 32-bit instruction. This is just a heuristic, so we do not worry
too much about false positives. */
- if (!found_stack_adjust)
- {
- if (pc - 4 < func_start)
- return 0;
- if (target_read_memory (pc - 4, buf, 4))
- return 0;
+ if (pc - 4 < func_start)
+ return 0;
+ if (target_read_memory (pc - 4, buf, 4))
+ return 0;
- insn = extract_unsigned_integer (buf, 2, byte_order_for_code);
- insn2 = extract_unsigned_integer (buf + 2, 2, byte_order_for_code);
+ insn = extract_unsigned_integer (buf, 2, byte_order_for_code);
+ insn2 = extract_unsigned_integer (buf + 2, 2, byte_order_for_code);
- if (thumb_instruction_restores_sp (insn2))
- found_stack_adjust = 1;
- else if (insn == 0xe8bd) /* ldm.w sp!, <registers> */
- found_stack_adjust = 1;
- else if (insn == 0xf85d /* ldr.w <Rt>, [sp], #4 */
- && (insn2 & 0x0fff) == 0x0b04)
- found_stack_adjust = 1;
- else if ((insn & 0xffbf) == 0xecbd /* vldm sp!, <list> */
- && (insn2 & 0x0e00) == 0x0a00)
- found_stack_adjust = 1;
- }
+ if (thumb_instruction_restores_sp (insn2))
+ found_stack_adjust = 1;
+ else if (insn == 0xe8bd) /* ldm.w sp!, <registers> */
+ found_stack_adjust = 1;
+ else if (insn == 0xf85d /* ldr.w <Rt>, [sp], #4 */
+ && (insn2 & 0x0fff) == 0x0b04)
+ found_stack_adjust = 1;
+ else if ((insn & 0xffbf) == 0xecbd /* vldm sp!, <list> */
+ && (insn2 & 0x0e00) == 0x0a00)
+ found_stack_adjust = 1;
return found_stack_adjust;
}
return -1;
}
+/* Record handler for vector data transfer instructions. */
+
+static int
+arm_record_vdata_transfer_insn (insn_decode_record *arm_insn_r)
+{
+ uint32_t bits_a, bit_c, bit_l, reg_t, reg_v;
+ uint32_t record_buf[4];
+
+ const int num_regs = gdbarch_num_regs (arm_insn_r->gdbarch);
+ reg_t = bits (arm_insn_r->arm_insn, 12, 15);
+ reg_v = bits (arm_insn_r->arm_insn, 21, 23);
+ bits_a = bits (arm_insn_r->arm_insn, 21, 23);
+ bit_l = bit (arm_insn_r->arm_insn, 20);
+ bit_c = bit (arm_insn_r->arm_insn, 8);
+
+ /* Handle VMOV instruction. */
+ if (bit_l && bit_c)
+ {
+ record_buf[0] = reg_t;
+ arm_insn_r->reg_rec_count = 1;
+ }
+ else if (bit_l && !bit_c)
+ {
+ /* Handle VMOV instruction. */
+ if (bits_a == 0x00)
+ {
+ if (bit (arm_insn_r->arm_insn, 20))
+ record_buf[0] = reg_t;
+ else
+ record_buf[0] = num_regs + (bit (arm_insn_r->arm_insn, 7) |
+ (reg_v << 1));
+
+ arm_insn_r->reg_rec_count = 1;
+ }
+ /* Handle VMRS instruction. */
+ else if (bits_a == 0x07)
+ {
+ if (reg_t == 15)
+ reg_t = ARM_PS_REGNUM;
+
+ record_buf[0] = reg_t;
+ arm_insn_r->reg_rec_count = 1;
+ }
+ }
+ else if (!bit_l && !bit_c)
+ {
+ /* Handle VMOV instruction. */
+ if (bits_a == 0x00)
+ {
+ if (bit (arm_insn_r->arm_insn, 20))
+ record_buf[0] = reg_t;
+ else
+ record_buf[0] = num_regs + (bit (arm_insn_r->arm_insn, 7) |
+ (reg_v << 1));
+
+ arm_insn_r->reg_rec_count = 1;
+ }
+ /* Handle VMSR instruction. */
+ else if (bits_a == 0x07)
+ {
+ record_buf[0] = ARM_FPSCR_REGNUM;
+ arm_insn_r->reg_rec_count = 1;
+ }
+ }
+ else if (!bit_l && bit_c)
+ {
+ /* Handle VMOV instruction. */
+ if (!(bits_a & 0x04))
+ {
+ record_buf[0] = (reg_v | (bit (arm_insn_r->arm_insn, 7) << 4))
+ + ARM_D0_REGNUM;
+ arm_insn_r->reg_rec_count = 1;
+ }
+ /* Handle VDUP instruction. */
+ else
+ {
+ if (bit (arm_insn_r->arm_insn, 21))
+ {
+ reg_v = reg_v | (bit (arm_insn_r->arm_insn, 7) << 4);
+ record_buf[0] = reg_v + ARM_D0_REGNUM;
+ record_buf[1] = reg_v + ARM_D0_REGNUM + 1;
+ arm_insn_r->reg_rec_count = 2;
+ }
+ else
+ {
+ reg_v = reg_v | (bit (arm_insn_r->arm_insn, 7) << 4);
+ record_buf[0] = reg_v + ARM_D0_REGNUM;
+ arm_insn_r->reg_rec_count = 1;
+ }
+ }
+ }
+
+ REG_ALLOC (arm_insn_r->arm_regs, arm_insn_r->reg_rec_count, record_buf);
+ return 0;
+}
+
+/* Record handler for extension register load/store instructions. */
+
+static int
+arm_record_exreg_ld_st_insn (insn_decode_record *arm_insn_r)
+{
+ uint32_t opcode, single_reg;
+ uint8_t op_vldm_vstm;
+ uint32_t record_buf[8], record_buf_mem[128];
+ ULONGEST u_regval = 0;
+
+ struct regcache *reg_cache = arm_insn_r->regcache;
+ const int num_regs = gdbarch_num_regs (arm_insn_r->gdbarch);
+
+ opcode = bits (arm_insn_r->arm_insn, 20, 24);
+ single_reg = bit (arm_insn_r->arm_insn, 8);
+ op_vldm_vstm = opcode & 0x1b;
+
+ /* Handle VMOV instructions. */
+ if ((opcode & 0x1e) == 0x04)
+ {
+ if (bit (arm_insn_r->arm_insn, 4))
+ {
+ record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
+ record_buf[1] = bits (arm_insn_r->arm_insn, 16, 19);
+ arm_insn_r->reg_rec_count = 2;
+ }
+ else
+ {
+ uint8_t reg_m = (bits (arm_insn_r->arm_insn, 0, 3) << 1)
+ | bit (arm_insn_r->arm_insn, 5);
+
+ if (!single_reg)
+ {
+ record_buf[0] = num_regs + reg_m;
+ record_buf[1] = num_regs + reg_m + 1;
+ arm_insn_r->reg_rec_count = 2;
+ }
+ else
+ {
+ record_buf[0] = reg_m + ARM_D0_REGNUM;
+ arm_insn_r->reg_rec_count = 1;
+ }
+ }
+ }
+ /* Handle VSTM and VPUSH instructions. */
+ else if (op_vldm_vstm == 0x08 || op_vldm_vstm == 0x0a
+ || op_vldm_vstm == 0x12)
+ {
+ uint32_t start_address, reg_rn, imm_off32, imm_off8, memory_count;
+ uint32_t memory_index = 0;
+
+ reg_rn = bits (arm_insn_r->arm_insn, 16, 19);
+ regcache_raw_read_unsigned (reg_cache, reg_rn, &u_regval);
+ imm_off8 = bits (arm_insn_r->arm_insn, 0, 7);
+ imm_off32 = imm_off8 << 24;
+ memory_count = imm_off8;
+
+ if (bit (arm_insn_r->arm_insn, 23))
+ start_address = u_regval;
+ else
+ start_address = u_regval - imm_off32;
+
+ if (bit (arm_insn_r->arm_insn, 21))
+ {
+ record_buf[0] = reg_rn;
+ arm_insn_r->reg_rec_count = 1;
+ }
+
+ while (memory_count > 0)
+ {
+ if (!single_reg)
+ {
+ record_buf_mem[memory_index] = start_address;
+ record_buf_mem[memory_index + 1] = 4;
+ start_address = start_address + 4;
+ memory_index = memory_index + 2;
+ }
+ else
+ {
+ record_buf_mem[memory_index] = start_address;
+ record_buf_mem[memory_index + 1] = 4;
+ record_buf_mem[memory_index + 2] = start_address + 4;
+ record_buf_mem[memory_index + 3] = 4;
+ start_address = start_address + 8;
+ memory_index = memory_index + 4;
+ }
+ memory_count--;
+ }
+ arm_insn_r->mem_rec_count = (memory_index >> 1);
+ }
+ /* Handle VLDM instructions. */
+ else if (op_vldm_vstm == 0x09 || op_vldm_vstm == 0x0b
+ || op_vldm_vstm == 0x13)
+ {
+ uint32_t reg_count, reg_vd;
+ uint32_t reg_index = 0;
+
+ reg_vd = bits (arm_insn_r->arm_insn, 12, 15);
+ reg_count = bits (arm_insn_r->arm_insn, 0, 7);
+
+ if (single_reg)
+ reg_vd = reg_vd | (bit (arm_insn_r->arm_insn, 22) << 4);
+ else
+ reg_vd = (reg_vd << 1) | bit (arm_insn_r->arm_insn, 22);
+
+ if (bit (arm_insn_r->arm_insn, 21))
+ record_buf[reg_index++] = bits (arm_insn_r->arm_insn, 16, 19);
+
+ while (reg_count > 0)
+ {
+ if (single_reg)
+ record_buf[reg_index++] = num_regs + reg_vd + reg_count - 1;
+ else
+ record_buf[reg_index++] = ARM_D0_REGNUM + reg_vd + reg_count - 1;
+
+ reg_count--;
+ }
+ arm_insn_r->reg_rec_count = reg_index;
+ }
+ /* VSTR Vector store register. */
+ else if ((opcode & 0x13) == 0x10)
+ {
+ uint32_t start_address, reg_rn, imm_off32, imm_off8, memory_count;
+ uint32_t memory_index = 0;
+
+ reg_rn = bits (arm_insn_r->arm_insn, 16, 19);
+ regcache_raw_read_unsigned (reg_cache, reg_rn, &u_regval);
+ imm_off8 = bits (arm_insn_r->arm_insn, 0, 7);
+ imm_off32 = imm_off8 << 24;
+ memory_count = imm_off8;
+
+ if (bit (arm_insn_r->arm_insn, 23))
+ start_address = u_regval + imm_off32;
+ else
+ start_address = u_regval - imm_off32;
+
+ if (single_reg)
+ {
+ record_buf_mem[memory_index] = start_address;
+ record_buf_mem[memory_index + 1] = 4;
+ arm_insn_r->mem_rec_count = 1;
+ }
+ else
+ {
+ record_buf_mem[memory_index] = start_address;
+ record_buf_mem[memory_index + 1] = 4;
+ record_buf_mem[memory_index + 2] = start_address + 4;
+ record_buf_mem[memory_index + 3] = 4;
+ arm_insn_r->mem_rec_count = 2;
+ }
+ }
+ /* VLDR Vector load register. */
+ else if ((opcode & 0x13) == 0x11)
+ {
+ uint32_t reg_vd = bits (arm_insn_r->arm_insn, 12, 15);
+
+ if (!single_reg)
+ {
+ reg_vd = reg_vd | (bit (arm_insn_r->arm_insn, 22) << 4);
+ record_buf[0] = ARM_D0_REGNUM + reg_vd;
+ }
+ else
+ {
+ reg_vd = (reg_vd << 1) | bit (arm_insn_r->arm_insn, 22);
+ record_buf[0] = num_regs + reg_vd;
+ }
+ arm_insn_r->reg_rec_count = 1;
+ }
+
+ REG_ALLOC (arm_insn_r->arm_regs, arm_insn_r->reg_rec_count, record_buf);
+ MEM_ALLOC (arm_insn_r->arm_mems, arm_insn_r->mem_rec_count, record_buf_mem);
+ return 0;
+}
+
+/* Record handler for arm/thumb mode VFP data processing instructions. */
+
+static int
+arm_record_vfp_data_proc_insn (insn_decode_record *arm_insn_r)
+{
+ uint32_t opc1, opc2, opc3, dp_op_sz, bit_d, reg_vd;
+ uint32_t record_buf[4];
+ enum insn_types {INSN_T0, INSN_T1, INSN_T2, INSN_T3, INSN_INV};
+ enum insn_types curr_insn_type = INSN_INV;
+
+ reg_vd = bits (arm_insn_r->arm_insn, 12, 15);
+ opc1 = bits (arm_insn_r->arm_insn, 20, 23);
+ opc2 = bits (arm_insn_r->arm_insn, 16, 19);
+ opc3 = bits (arm_insn_r->arm_insn, 6, 7);
+ dp_op_sz = bit (arm_insn_r->arm_insn, 8);
+ bit_d = bit (arm_insn_r->arm_insn, 22);
+ opc1 = opc1 & 0x04;
+
+ /* Handle VMLA, VMLS. */
+ if (opc1 == 0x00)
+ {
+ if (bit (arm_insn_r->arm_insn, 10))
+ {
+ if (bit (arm_insn_r->arm_insn, 6))
+ curr_insn_type = INSN_T0;
+ else
+ curr_insn_type = INSN_T1;
+ }
+ else
+ {
+ if (dp_op_sz)
+ curr_insn_type = INSN_T1;
+ else
+ curr_insn_type = INSN_T2;
+ }
+ }
+ /* Handle VNMLA, VNMLS, VNMUL. */
+ else if (opc1 == 0x01)
+ {
+ if (dp_op_sz)
+ curr_insn_type = INSN_T1;
+ else
+ curr_insn_type = INSN_T2;
+ }
+ /* Handle VMUL. */
+ else if (opc1 == 0x02 && !(opc3 & 0x01))
+ {
+ if (bit (arm_insn_r->arm_insn, 10))
+ {
+ if (bit (arm_insn_r->arm_insn, 6))
+ curr_insn_type = INSN_T0;
+ else
+ curr_insn_type = INSN_T1;
+ }
+ else
+ {
+ if (dp_op_sz)
+ curr_insn_type = INSN_T1;
+ else
+ curr_insn_type = INSN_T2;
+ }
+ }
+ /* Handle VADD, VSUB. */
+ else if (opc1 == 0x03)
+ {
+ if (!bit (arm_insn_r->arm_insn, 9))
+ {
+ if (bit (arm_insn_r->arm_insn, 6))
+ curr_insn_type = INSN_T0;
+ else
+ curr_insn_type = INSN_T1;
+ }
+ else
+ {
+ if (dp_op_sz)
+ curr_insn_type = INSN_T1;
+ else
+ curr_insn_type = INSN_T2;
+ }
+ }
+ /* Handle VDIV. */
+ else if (opc1 == 0x0b)
+ {
+ if (dp_op_sz)
+ curr_insn_type = INSN_T1;
+ else
+ curr_insn_type = INSN_T2;
+ }
+ /* Handle all other vfp data processing instructions. */
+ else if (opc1 == 0x0b)
+ {
+ /* Handle VMOV. */
+ if (!(opc3 & 0x01) || (opc2 == 0x00 && opc3 == 0x01))
+ {
+ if (bit (arm_insn_r->arm_insn, 4))
+ {
+ if (bit (arm_insn_r->arm_insn, 6))
+ curr_insn_type = INSN_T0;
+ else
+ curr_insn_type = INSN_T1;
+ }
+ else
+ {
+ if (dp_op_sz)
+ curr_insn_type = INSN_T1;
+ else
+ curr_insn_type = INSN_T2;
+ }
+ }
+ /* Handle VNEG and VABS. */
+ else if ((opc2 == 0x01 && opc3 == 0x01)
+ || (opc2 == 0x00 && opc3 == 0x03))
+ {
+ if (!bit (arm_insn_r->arm_insn, 11))
+ {
+ if (bit (arm_insn_r->arm_insn, 6))
+ curr_insn_type = INSN_T0;
+ else
+ curr_insn_type = INSN_T1;
+ }
+ else
+ {
+ if (dp_op_sz)
+ curr_insn_type = INSN_T1;
+ else
+ curr_insn_type = INSN_T2;
+ }
+ }
+ /* Handle VSQRT. */
+ else if (opc2 == 0x01 && opc3 == 0x03)
+ {
+ if (dp_op_sz)
+ curr_insn_type = INSN_T1;
+ else
+ curr_insn_type = INSN_T2;
+ }
+ /* Handle VCVT. */
+ else if (opc2 == 0x07 && opc3 == 0x03)
+ {
+ if (!dp_op_sz)
+ curr_insn_type = INSN_T1;
+ else
+ curr_insn_type = INSN_T2;
+ }
+ else if (opc3 & 0x01)
+ {
+ /* Handle VCVT. */
+ if ((opc2 == 0x08) || (opc2 & 0x0e) == 0x0c)
+ {
+ if (!bit (arm_insn_r->arm_insn, 18))
+ curr_insn_type = INSN_T2;
+ else
+ {
+ if (dp_op_sz)
+ curr_insn_type = INSN_T1;
+ else
+ curr_insn_type = INSN_T2;
+ }
+ }
+ /* Handle VCVT. */
+ else if ((opc2 & 0x0e) == 0x0a || (opc2 & 0x0e) == 0x0e)
+ {
+ if (dp_op_sz)
+ curr_insn_type = INSN_T1;
+ else
+ curr_insn_type = INSN_T2;
+ }
+ /* Handle VCVTB, VCVTT. */
+ else if ((opc2 & 0x0e) == 0x02)
+ curr_insn_type = INSN_T2;
+ /* Handle VCMP, VCMPE. */
+ else if ((opc2 & 0x0e) == 0x04)
+ curr_insn_type = INSN_T3;
+ }
+ }
+
+ switch (curr_insn_type)
+ {
+ case INSN_T0:
+ reg_vd = reg_vd | (bit_d << 4);
+ record_buf[0] = reg_vd + ARM_D0_REGNUM;
+ record_buf[1] = reg_vd + ARM_D0_REGNUM + 1;
+ arm_insn_r->reg_rec_count = 2;
+ break;
+
+ case INSN_T1:
+ reg_vd = reg_vd | (bit_d << 4);
+ record_buf[0] = reg_vd + ARM_D0_REGNUM;
+ arm_insn_r->reg_rec_count = 1;
+ break;
+
+ case INSN_T2:
+ reg_vd = (reg_vd << 1) | bit_d;
+ record_buf[0] = reg_vd + ARM_D0_REGNUM;
+ arm_insn_r->reg_rec_count = 1;
+ break;
+
+ case INSN_T3:
+ record_buf[0] = ARM_FPSCR_REGNUM;
+ arm_insn_r->reg_rec_count = 1;
+ break;
+
+ default:
+ gdb_assert_not_reached ("no decoding pattern found");
+ break;
+ }
+
+ REG_ALLOC (arm_insn_r->arm_regs, arm_insn_r->reg_rec_count, record_buf);
+ return 0;
+}
+
+/* Handling opcode 110 insns. */
+
+static int
+arm_record_asimd_vfp_coproc (insn_decode_record *arm_insn_r)
+{
+ uint32_t op, op1, op1_sbit, op1_ebit, coproc;
+
+ coproc = bits (arm_insn_r->arm_insn, 8, 11);
+ op1 = bits (arm_insn_r->arm_insn, 20, 25);
+ op1_ebit = bit (arm_insn_r->arm_insn, 20);
+
+ if ((coproc & 0x0e) == 0x0a)
+ {
+ /* Handle extension register ld/st instructions. */
+ if (!(op1 & 0x20))
+ return arm_record_exreg_ld_st_insn (arm_insn_r);
+
+ /* 64-bit transfers between arm core and extension registers. */
+ if ((op1 & 0x3e) == 0x04)
+ return arm_record_exreg_ld_st_insn (arm_insn_r);
+ }
+ else
+ {
+ /* Handle coprocessor ld/st instructions. */
+ if (!(op1 & 0x3a))
+ {
+ /* Store. */
+ if (!op1_ebit)
+ return arm_record_unsupported_insn (arm_insn_r);
+ else
+ /* Load. */
+ return arm_record_unsupported_insn (arm_insn_r);
+ }
+
+ /* Move to coprocessor from two arm core registers. */
+ if (op1 == 0x4)
+ return arm_record_unsupported_insn (arm_insn_r);
+
+ /* Move to two arm core registers from coprocessor. */
+ if (op1 == 0x5)
+ {
+ uint32_t reg_t[2];
+
+ reg_t[0] = bits (arm_insn_r->arm_insn, 12, 15);
+ reg_t[1] = bits (arm_insn_r->arm_insn, 16, 19);
+ arm_insn_r->reg_rec_count = 2;
+
+ REG_ALLOC (arm_insn_r->arm_regs, arm_insn_r->reg_rec_count, reg_t);
+ return 0;
+ }
+ }
+ return arm_record_unsupported_insn (arm_insn_r);
+}
+
/* Handling opcode 111 insns. */
static int
arm_record_coproc_data_proc (insn_decode_record *arm_insn_r)
{
+ uint32_t op, op1_sbit, op1_ebit, coproc;
struct gdbarch_tdep *tdep = gdbarch_tdep (arm_insn_r->gdbarch);
struct regcache *reg_cache = arm_insn_r->regcache;
- uint32_t ret = 0; /* function return value: -1:record failure ; 0:success */
ULONGEST u_regval = 0;
arm_insn_r->opcode = bits (arm_insn_r->arm_insn, 24, 27);
+ coproc = bits (arm_insn_r->arm_insn, 8, 11);
+ op1_sbit = bit (arm_insn_r->arm_insn, 24);
+ op1_ebit = bit (arm_insn_r->arm_insn, 20);
+ op = bit (arm_insn_r->arm_insn, 4);
/* Handle arm SWI/SVC system call instructions. */
- if (15 == arm_insn_r->opcode)
+ if (op1_sbit)
{
if (tdep->arm_syscall_record != NULL)
{
else /* EABI. */
regcache_raw_read_unsigned (reg_cache, 7, &svc_number);
- ret = tdep->arm_syscall_record (reg_cache, svc_number);
+ return tdep->arm_syscall_record (reg_cache, svc_number);
}
else
{
printf_unfiltered (_("no syscall record support\n"));
- ret = -1;
+ return -1;
}
}
+
+ if ((coproc & 0x0e) == 0x0a)
+ {
+ /* VFP data-processing instructions. */
+ if (!op1_sbit && !op)
+ return arm_record_vfp_data_proc_insn (arm_insn_r);
+
+ /* Advanced SIMD, VFP instructions. */
+ if (!op1_sbit && op)
+ return arm_record_vdata_transfer_insn (arm_insn_r);
+ }
else
{
- arm_record_unsupported_insn (arm_insn_r);
- ret = -1;
+ /* Coprocessor data operations. */
+ if (!op1_sbit && !op)
+ return arm_record_unsupported_insn (arm_insn_r);
+
+ /* Move to Coprocessor from ARM core register. */
+ if (!op1_sbit && !op1_ebit && op)
+ return arm_record_unsupported_insn (arm_insn_r);
+
+ /* Move to arm core register from coprocessor. */
+ if (!op1_sbit && op1_ebit && op)
+ {
+ uint32_t record_buf[1];
+
+ record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
+ if (record_buf[0] == 15)
+ record_buf[0] = ARM_PS_REGNUM;
+
+ arm_insn_r->reg_rec_count = 1;
+ REG_ALLOC (arm_insn_r->arm_regs, arm_insn_r->reg_rec_count,
+ record_buf);
+ return 0;
+ }
}
- return ret;
+ return arm_record_unsupported_insn (arm_insn_r);
}
/* Handling opcode 000 insns. */
return ARM_RECORD_SUCCESS;
}
+/* Record handler for thumb32 coprocessor instructions. */
+
+static int
+thumb2_record_coproc_insn (insn_decode_record *thumb2_insn_r)
+{
+ if (bit (thumb2_insn_r->arm_insn, 25))
+ return arm_record_coproc_data_proc (thumb2_insn_r);
+ else
+ return arm_record_asimd_vfp_coproc (thumb2_insn_r);
+}
+
+/* Record handler for advance SIMD structure load/store instructions. */
+
+static int
+thumb2_record_asimd_struct_ld_st (insn_decode_record *thumb2_insn_r)
+{
+ struct regcache *reg_cache = thumb2_insn_r->regcache;
+ uint32_t l_bit, a_bit, b_bits;
+ uint32_t record_buf[128], record_buf_mem[128];
+ uint32_t reg_rn, reg_vd, address, f_esize, f_elem;
+ uint32_t index_r = 0, index_e = 0, bf_regs = 0, index_m = 0, loop_t = 0;
+ uint8_t f_ebytes;
+
+ l_bit = bit (thumb2_insn_r->arm_insn, 21);
+ a_bit = bit (thumb2_insn_r->arm_insn, 23);
+ b_bits = bits (thumb2_insn_r->arm_insn, 8, 11);
+ reg_rn = bits (thumb2_insn_r->arm_insn, 16, 19);
+ reg_vd = bits (thumb2_insn_r->arm_insn, 12, 15);
+ reg_vd = (bit (thumb2_insn_r->arm_insn, 22) << 4) | reg_vd;
+ f_ebytes = (1 << bits (thumb2_insn_r->arm_insn, 6, 7));
+ f_esize = 8 * f_ebytes;
+ f_elem = 8 / f_ebytes;
+
+ if (!l_bit)
+ {
+ ULONGEST u_regval = 0;
+ regcache_raw_read_unsigned (reg_cache, reg_rn, &u_regval);
+ address = u_regval;
+
+ if (!a_bit)
+ {
+ /* Handle VST1. */
+ if (b_bits == 0x02 || b_bits == 0x0a || (b_bits & 0x0e) == 0x06)
+ {
+ if (b_bits == 0x07)
+ bf_regs = 1;
+ else if (b_bits == 0x0a)
+ bf_regs = 2;
+ else if (b_bits == 0x06)
+ bf_regs = 3;
+ else if (b_bits == 0x02)
+ bf_regs = 4;
+ else
+ bf_regs = 0;
+
+ for (index_r = 0; index_r < bf_regs; index_r++)
+ {
+ for (index_e = 0; index_e < f_elem; index_e++)
+ {
+ record_buf_mem[index_m++] = f_ebytes;
+ record_buf_mem[index_m++] = address;
+ address = address + f_ebytes;
+ thumb2_insn_r->mem_rec_count += 1;
+ }
+ }
+ }
+ /* Handle VST2. */
+ else if (b_bits == 0x03 || (b_bits & 0x0e) == 0x08)
+ {
+ if (b_bits == 0x09 || b_bits == 0x08)
+ bf_regs = 1;
+ else if (b_bits == 0x03)
+ bf_regs = 2;
+ else
+ bf_regs = 0;
+
+ for (index_r = 0; index_r < bf_regs; index_r++)
+ for (index_e = 0; index_e < f_elem; index_e++)
+ {
+ for (loop_t = 0; loop_t < 2; loop_t++)
+ {
+ record_buf_mem[index_m++] = f_ebytes;
+ record_buf_mem[index_m++] = address + (loop_t * f_ebytes);
+ thumb2_insn_r->mem_rec_count += 1;
+ }
+ address = address + (2 * f_ebytes);
+ }
+ }
+ /* Handle VST3. */
+ else if ((b_bits & 0x0e) == 0x04)
+ {
+ for (index_e = 0; index_e < f_elem; index_e++)
+ {
+ for (loop_t = 0; loop_t < 3; loop_t++)
+ {
+ record_buf_mem[index_m++] = f_ebytes;
+ record_buf_mem[index_m++] = address + (loop_t * f_ebytes);
+ thumb2_insn_r->mem_rec_count += 1;
+ }
+ address = address + (3 * f_ebytes);
+ }
+ }
+ /* Handle VST4. */
+ else if (!(b_bits & 0x0e))
+ {
+ for (index_e = 0; index_e < f_elem; index_e++)
+ {
+ for (loop_t = 0; loop_t < 4; loop_t++)
+ {
+ record_buf_mem[index_m++] = f_ebytes;
+ record_buf_mem[index_m++] = address + (loop_t * f_ebytes);
+ thumb2_insn_r->mem_rec_count += 1;
+ }
+ address = address + (4 * f_ebytes);
+ }
+ }
+ }
+ else
+ {
+ uint8_t bft_size = bits (thumb2_insn_r->arm_insn, 10, 11);
+
+ if (bft_size == 0x00)
+ f_ebytes = 1;
+ else if (bft_size == 0x01)
+ f_ebytes = 2;
+ else if (bft_size == 0x02)
+ f_ebytes = 4;
+ else
+ f_ebytes = 0;
+
+ /* Handle VST1. */
+ if (!(b_bits & 0x0b) || b_bits == 0x08)
+ thumb2_insn_r->mem_rec_count = 1;
+ /* Handle VST2. */
+ else if ((b_bits & 0x0b) == 0x01 || b_bits == 0x09)
+ thumb2_insn_r->mem_rec_count = 2;
+ /* Handle VST3. */
+ else if ((b_bits & 0x0b) == 0x02 || b_bits == 0x0a)
+ thumb2_insn_r->mem_rec_count = 3;
+ /* Handle VST4. */
+ else if ((b_bits & 0x0b) == 0x03 || b_bits == 0x0b)
+ thumb2_insn_r->mem_rec_count = 4;
+
+ for (index_m = 0; index_m < thumb2_insn_r->mem_rec_count; index_m++)
+ {
+ record_buf_mem[index_m] = f_ebytes;
+ record_buf_mem[index_m] = address + (index_m * f_ebytes);
+ }
+ }
+ }
+ else
+ {
+ if (!a_bit)
+ {
+ /* Handle VLD1. */
+ if (b_bits == 0x02 || b_bits == 0x0a || (b_bits & 0x0e) == 0x06)
+ thumb2_insn_r->reg_rec_count = 1;
+ /* Handle VLD2. */
+ else if (b_bits == 0x03 || (b_bits & 0x0e) == 0x08)
+ thumb2_insn_r->reg_rec_count = 2;
+ /* Handle VLD3. */
+ else if ((b_bits & 0x0e) == 0x04)
+ thumb2_insn_r->reg_rec_count = 3;
+ /* Handle VLD4. */
+ else if (!(b_bits & 0x0e))
+ thumb2_insn_r->reg_rec_count = 4;
+ }
+ else
+ {
+ /* Handle VLD1. */
+ if (!(b_bits & 0x0b) || b_bits == 0x08 || b_bits == 0x0c)
+ thumb2_insn_r->reg_rec_count = 1;
+ /* Handle VLD2. */
+ else if ((b_bits & 0x0b) == 0x01 || b_bits == 0x09 || b_bits == 0x0d)
+ thumb2_insn_r->reg_rec_count = 2;
+ /* Handle VLD3. */
+ else if ((b_bits & 0x0b) == 0x02 || b_bits == 0x0a || b_bits == 0x0e)
+ thumb2_insn_r->reg_rec_count = 3;
+ /* Handle VLD4. */
+ else if ((b_bits & 0x0b) == 0x03 || b_bits == 0x0b || b_bits == 0x0f)
+ thumb2_insn_r->reg_rec_count = 4;
+
+ for (index_r = 0; index_r < thumb2_insn_r->reg_rec_count; index_r++)
+ record_buf[index_r] = reg_vd + ARM_D0_REGNUM + index_r;
+ }
+ }
+
+ if (bits (thumb2_insn_r->arm_insn, 0, 3) != 15)
+ {
+ record_buf[index_r] = reg_rn;
+ thumb2_insn_r->reg_rec_count += 1;
+ }
+
+ REG_ALLOC (thumb2_insn_r->arm_regs, thumb2_insn_r->reg_rec_count,
+ record_buf);
+ MEM_ALLOC (thumb2_insn_r->arm_mems, thumb2_insn_r->mem_rec_count,
+ record_buf_mem);
+ return 0;
+}
+
/* Decodes thumb2 instruction type and invokes its record handler. */
static unsigned int
else if (op2 & 0x40)
{
/* Co-processor instructions. */
- arm_record_unsupported_insn (thumb2_insn_r);
+ return thumb2_record_coproc_insn (thumb2_insn_r);
}
}
else if (op1 == 0x02)
else if (!((op2 & 0x71) ^ 0x10))
{
/* Advanced SIMD or structure load/store instructions. */
- return arm_record_unsupported_insn (thumb2_insn_r);
+ return thumb2_record_asimd_struct_ld_st (thumb2_insn_r);
}
else if (!((op2 & 0x67) ^ 0x01))
{
else if (op2 & 0x40)
{
/* Co-processor instructions. */
- return arm_record_unsupported_insn (thumb2_insn_r);
+ return thumb2_record_coproc_insn (thumb2_insn_r);
}
}
arm_record_ld_st_reg_offset, /* 011. */
arm_record_ld_st_multiple, /* 100. */
arm_record_b_bl, /* 101. */
- arm_record_unsupported_insn, /* 110. */
+ arm_record_asimd_vfp_coproc, /* 110. */
arm_record_coproc_data_proc /* 111. */
};
projects / platform / upstream / binutils.git / blobdiff