diff --git a/gdb/ChangeLog b/gdb/ChangeLog index f7671408bb..3231d69d3d 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,9 @@ +2014-08-13 Omair Javaid + + * arm-tdep.c (arm_record_vdata_transfer_insn): Added record handler for + vector data transfer instructions. + (arm_record_coproc_data_proc): Updated. + 2014-08-13 Omair Javaid * arm-tdep.c (arm_record_asimd_vfp_coproc): Replace stub handler with diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c index a0b4848e71..5cdfc5bf4e 100644 --- a/gdb/arm-tdep.c +++ b/gdb/arm-tdep.c @@ -12016,6 +12016,102 @@ arm_record_unsupported_insn (insn_decode_record *arm_insn_r) 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 @@ -12502,7 +12598,7 @@ arm_record_coproc_data_proc (insn_decode_record *arm_insn_r) /* Advanced SIMD, VFP instructions. */ if (!op1_sbit && op) - return arm_record_unsupported_insn (arm_insn_r); + return arm_record_vdata_transfer_insn (arm_insn_r); } else {