diff options
Diffstat (limited to 'opcodes/ft32-dis.c')
| -rw-r--r-- | opcodes/ft32-dis.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/opcodes/ft32-dis.c b/opcodes/ft32-dis.c new file mode 100644 index 0000000..877a7ee --- /dev/null +++ b/opcodes/ft32-dis.c @@ -0,0 +1,177 @@ +/* Disassemble ft32 instructions. + Copyright (C) 2013-2015 Free Software Foundation, Inc. + Contributed by FTDI (support@ftdichip.com) + + This file is part of the GNU opcodes library. + + This library is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3, or (at your option) + any later version. + + It is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public + License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ + +#include "sysdep.h" +#include <stdio.h> +#define STATIC_TABLE +#define DEFINE_TABLE + +#include "opcode/ft32.h" +#include "dis-asm.h" + +extern const ft32_opc_info_t ft32_opc_info[128]; + +static fprintf_ftype fpr; +static void *stream; + +int +print_insn_ft32 (bfd_vma addr, struct disassemble_info *info) +{ + int status; + stream = info->stream; + bfd_byte buffer[4]; + unsigned int iword; + const ft32_opc_info_t *oo; + + fpr = info->fprintf_func; + + if ((status = info->read_memory_func (addr, buffer, 4, info))) + goto fail; + + iword = bfd_getl32 (buffer); + + for (oo = ft32_opc_info; oo->name; oo++) + if ((iword & oo->mask) == oo->bits) + break; + + if (oo->name) + { + int f = oo->fields; + int imm; + + fpr (stream, "%08x %s", iword, oo->name); + if (oo->dw) + { + fpr (stream, ".%c ", "bsl"[(iword >> FT32_FLD_DW_BIT) & 3]); + } + else + { + fpr (stream, " "); + } + + while (f) + { + int lobit = f & -f; + if (f & lobit) + { + switch (lobit) + { + case FT32_FLD_CBCRCV: + // imm is {CB, CV} + imm = ((iword >> FT32_FLD_CB_BIT) & ((1 << FT32_FLD_CB_SIZ) - 1)) << 4; + imm |= ((iword >> FT32_FLD_CV_BIT) & ((1 << FT32_FLD_CV_SIZ) - 1)); + switch (imm) + { + case 0x00: fpr(stream, "nz"); break; + case 0x01: fpr(stream, "z"); break; + case 0x10: fpr(stream, "ae"); break; + case 0x11: fpr(stream, "b"); break; + case 0x20: fpr(stream, "no"); break; + case 0x21: fpr(stream, "o"); break; + case 0x30: fpr(stream, "ns"); break; + case 0x31: fpr(stream, "s"); break; + case 0x40: fpr(stream, "lt"); break; + case 0x41: fpr(stream, "gte"); break; + case 0x50: fpr(stream, "lte"); break; + case 0x51: fpr(stream, "gt"); break; + case 0x60: fpr(stream, "be"); break; + case 0x61: fpr(stream, "a"); break; + default: fpr(stream, "%d,$r30,%d", (imm >> 4), (imm & 1)); break; + } + break; + case FT32_FLD_CB: + imm = (iword >> FT32_FLD_CB_BIT) & ((1 << FT32_FLD_CB_SIZ) - 1); + fpr(stream, "%d", imm); + break; + case FT32_FLD_R_D: + fpr(stream, "$r%d", (iword >> FT32_FLD_R_D_BIT) & 0x1f); + break; + case FT32_FLD_CR: + imm = (iword >> FT32_FLD_CR_BIT) & ((1 << FT32_FLD_CR_SIZ) - 1); + fpr(stream, "$r%d", 28 + imm); + break; + case FT32_FLD_CV: + imm = (iword >> FT32_FLD_CV_BIT) & ((1 << FT32_FLD_CV_SIZ) - 1); + fpr(stream, "%d", imm); + break; + case FT32_FLD_R_1: + fpr(stream, "$r%d", (iword >> FT32_FLD_R_1_BIT) & 0x1f); + break; + case FT32_FLD_RIMM: + imm = (iword >> FT32_FLD_RIMM_BIT) & ((1 << FT32_FLD_RIMM_SIZ) - 1); + if (imm & 0x400) + info->print_address_func ((bfd_vma) imm & 0x1ff, info); + else + fpr(stream, "$r%d", imm & 0x1f); + break; + case FT32_FLD_R_2: + fpr(stream, "$r%d", (iword >> FT32_FLD_R_2_BIT) & 0x1f); + break; + case FT32_FLD_K20: + imm = iword & ((1 << FT32_FLD_K20_SIZ) - 1); + info->print_address_func ((bfd_vma) imm, info); + break; + case FT32_FLD_PA: + imm = (iword & ((1 << FT32_FLD_PA_SIZ) - 1)) << 2; + info->print_address_func ((bfd_vma) imm, info); + break; + case FT32_FLD_AA: + imm = iword & ((1 << FT32_FLD_AA_SIZ) - 1); + info->print_address_func ((bfd_vma) imm, info); + break; + break; + case FT32_FLD_K16: + imm = iword & ((1 << FT32_FLD_K16_SIZ) - 1); + info->print_address_func ((bfd_vma) imm, info); + break; + case FT32_FLD_K8: + imm = iword & ((1 << FT32_FLD_K8_SIZ) - 1); + info->print_address_func ((bfd_vma) imm, info); + break; + break; + case FT32_FLD_R_D_POST: + fpr(stream, "$r%d", (iword >> FT32_FLD_R_D_BIT) & 0x1f); + break; + case FT32_FLD_R_1_POST: + fpr(stream, "$r%d", (iword >> FT32_FLD_R_1_BIT) & 0x1f); + break; + default: + break; + } + f &= ~lobit; + if (f) + { + fpr(stream, ","); + } + } + } + } + else + { + fpr (stream, "%08x!", iword); + } + + return 4; + + fail: + info->memory_error_func (status, addr, info); + return -1; +} |