diff options
Diffstat (limited to 'opcodes')
| -rw-r--r-- | opcodes/ChangeLog | 9 | ||||
| -rw-r--r-- | opcodes/arm-dis.c | 54 |
2 files changed, 61 insertions, 2 deletions
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog index 7e3bbf5..883c7a9 100644 --- a/opcodes/ChangeLog +++ b/opcodes/ChangeLog @@ -1,3 +1,10 @@ +2005-03-12 Zack Weinberg <zack@codesourcery.com> + + * arm-dis.c (arm_opcodes): Document %E and %V. + Add entries for v6T2 ARM instructions: + bfc bfi mls strht ldrht ldrsht ldrsbt movw movt rbit ubfx sbfx. + (print_insn_arm): Add support for %E and %V. + 2005-03-10 Jeff Baker <jbaker@qnx.com> Alan Modra <amodra@bigpond.net.au> @@ -5,7 +12,7 @@ (powerpc_operands <SPRG>): Call the above. Bit field is 5 bits. (SPRG_MASK): Delete. (XSPRG_MASK): Mask off extra bits now part of sprg field. - (powerpc_opcodes): Asjust mfsprg and mtsprg to suit new mask. Move + (powerpc_opcodes): Asjust mfsprg and mtsprg to suit new mask. Move mfsprg4..7 after msprg and consolidate. 2005-03-09 Jan-Benedict Glaw <jbglaw@lug-owl.de> diff --git a/opcodes/arm-dis.c b/opcodes/arm-dis.c index 5388bd1..a87bcc0 100644 --- a/opcodes/arm-dis.c +++ b/opcodes/arm-dis.c @@ -81,6 +81,8 @@ %m print register mask for ldm/stm instruction %C print the PSR sub type. %F print the COUNT field of a LFM/SFM instruction. + %E print the LSB and WIDTH fields of a BFI or BFC instruction. + %V print the 16-bit immediate field of a MOVT or MOVW instruction. IWMMXT specific format options: %<bitfield>g print as an iWMMXt 64-bit register %<bitfield>G print as an iWMMXt general purpose or control register @@ -118,6 +120,17 @@ static const struct arm_opcode arm_opcodes[] = {ARM_EXT_V3M, 0x00800090, 0x0fa000f0, "%22?sumull%c%20's\t%12-15r, %16-19r, %0-3r, %8-11r"}, {ARM_EXT_V3M, 0x00a00090, 0x0fa000f0, "%22?sumlal%c%20's\t%12-15r, %16-19r, %0-3r, %8-11r"}, + /* ARM V6T2 instructions. */ + {ARM_EXT_V6T2, 0x07c0001f, 0x0fe0007f, "bfc%c\t%12-15r, %E"}, + {ARM_EXT_V6T2, 0x07c00010, 0x0fe00070, "bfi%c\t%12-15r, %0-3r, %E"}, + {ARM_EXT_V6T2, 0x00600090, 0x0ff000f0, "mls%c\t%16-19r, %0-3r, %8-11r, %12-15r"}, + {ARM_EXT_V6T2, 0x006000b0, 0x0f7000f0, "str%cht\t%12-15r, %s"}, + {ARM_EXT_V6T2, 0x00300090, 0x0f300090, "ldr%c%6's%5?hbt\t%12-15r, %s"}, + {ARM_EXT_V6T2, 0x03000000, 0x0ff00000, "movw%c\t%12-15r, %V"}, + {ARM_EXT_V6T2, 0x03400000, 0x0ff00000, "movt%c\t%12-15r, %V"}, + {ARM_EXT_V6T2, 0x03ff0f30, 0x0fff0ff0, "rbit%c\t%12-15r, %0-3r"}, + {ARM_EXT_V6T2, 0x07a00050, 0x0fa00070, "%22?usbfx%c\t%12-15r, %0-3r, #%7-11d, #%16-20W"}, + /* ARM V6Z instructions. */ {ARM_EXT_V6Z, 0x01600070, 0x0ff000f0, "smi%c\t%e"}, @@ -622,6 +635,13 @@ static const struct thumb_opcode thumb_opcodes[] = { /* Thumb instructions. */ + /* ARM V6K no-argument instructions. */ + {ARM_EXT_V6K, 0xbf00, 0xffff, "nop"}, + {ARM_EXT_V6K, 0xbf10, 0xffff, "yield"}, + {ARM_EXT_V6K, 0xbf20, 0xffff, "wfe"}, + {ARM_EXT_V6K, 0xbf30, 0xffff, "wfi"}, + {ARM_EXT_V6K, 0xbf40, 0xffff, "sev"}, + /* ARM V6. */ {ARM_EXT_V6, 0xb660, 0xfff8, "cpsie\t%2'a%1'i%0'f"}, {ARM_EXT_V6, 0xb670, 0xfff8, "cpsid\t%2'a%1'i%0'f"}, @@ -929,7 +949,13 @@ print_insn_arm (pc, info, given) && info->mach != bfd_mach_arm_iWMMXt) insn = insn + IWMMXT_INSN_COUNT; - if ((given & insn->mask) == insn->value) + if ((given & insn->mask) == insn->value + /* Special case: an instruction with all bits set in the condition field + (0xFnnn_nnnn) is only matched if all those bits are set in insn->mask, + or by the catchall at the end of the table. */ + && ((given & 0xF0000000) != 0xF0000000 + || (insn->mask & 0xF0000000) == 0xF0000000 + || (insn->mask == 0 && insn->value == 0))) { char * c; @@ -1613,6 +1639,32 @@ print_insn_arm (pc, info, given) } break; + case 'E': + /* LSB and WIDTH fields of BFI or BFC. The machine- + language instruction encodes LSB and MSB. */ + { + long msb = (given & 0x001f0000) >> 16; + long lsb = (given & 0x00000f80) >> 7; + + long width = msb - lsb + 1; + if (width > 0) + func (stream, "#%lu, #%lu", lsb, width); + else + func (stream, "(invalid: %lu:%lu)", lsb, msb); + } + break; + + case 'V': + /* 16-bit unsigned immediate from a MOVT or MOVW + instruction, encoded in bits 0:11 and 15:19. */ + { + long hi = (given & 0x000f0000) >> 4; + long lo = (given & 0x00000fff); + long imm16 = hi | lo; + func (stream, "#%lu\t; 0x%lx", imm16, imm16); + } + break; + default: abort (); } |