diff options
| -rw-r--r-- | include/opcode/ChangeLog | 6 | ||||
| -rw-r--r-- | include/opcode/mips.h | 9 | ||||
| -rw-r--r-- | opcodes/ChangeLog | 6 | ||||
| -rw-r--r-- | opcodes/mips-dis.c | 86 | ||||
| -rw-r--r-- | opcodes/mips16-opc.c | 2 |
5 files changed, 108 insertions, 1 deletions
diff --git a/include/opcode/ChangeLog b/include/opcode/ChangeLog index a282a622261..c9a4a1257d0 100644 --- a/include/opcode/ChangeLog +++ b/include/opcode/ChangeLog @@ -1,3 +1,9 @@ +2005-11-14 David Ung <davidu@mips.com> + + * mips.h: Assign 'm'/'M' codes to MIPS16e save/restore + instructions. Define MIPS16_ALL_ARGS and MIPS16_ALL_STATICS for + save/restore encoding of the args field. + 2005-10-28 Dave Brolley <brolley@redhat.com> Contribute the following changes: diff --git a/include/opcode/mips.h b/include/opcode/mips.h index e46ba2c0996..4bec5edcc8c 100644 --- a/include/opcode/mips.h +++ b/include/opcode/mips.h @@ -928,7 +928,14 @@ extern int bfd_mips_num_opcodes; "A" 8 bit PC relative address * 4 (MIPS16OP_*_IMM8) "B" 5 bit PC relative address * 8 (MIPS16OP_*_IMM5) "E" 5 bit PC relative address * 4 (MIPS16OP_*_IMM5) - */ + "m" 7 bit register list for save instruction (18 bit extended) + "M" 7 bit register list for restore instruction (18 bit extended) + */ + +/* Save/restore encoding for the args field when all 4 registers are + either saved as arguments or saved/restored as statics. */ +#define MIPS16_ALL_ARGS 0xe +#define MIPS16_ALL_STATICS 0xb /* For the mips16, we use the same opcode table format and a few of the same flags. However, most of the flags are different. */ diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog index aa14a3d125a..aebe716dc51 100644 --- a/opcodes/ChangeLog +++ b/opcodes/ChangeLog @@ -1,3 +1,9 @@ +2005-11-14 David Ung <davidu@mips.com> + + * mips16-opc.c: Add MIPS16e save/restore opcodes. + * mips-dis.c (print_mips16_insn_arg): Handle printing of 'm'/'M' + codes for save/restore. + 2005-11-10 Andreas Schwab <schwab@suse.de> * m68k-dis.c (print_insn_m68k): Only match FPU insns with diff --git a/opcodes/mips-dis.c b/opcodes/mips-dis.c index 21f20fb5035..9a48d86d2d1 100644 --- a/opcodes/mips-dis.c +++ b/opcodes/mips-dis.c @@ -1656,6 +1656,92 @@ print_mips16_insn_arg (char type, } break; + case 'm': + case 'M': + /* MIPS16e save/restore. */ + { + int need_comma = 0; + int amask, args, statics; + int nsreg, smask; + int framesz; + int i, j; + + l = l & 0x7f; + if (use_extend) + l |= extend << 16; + + amask = (l >> 16) & 0xf; + if (amask == MIPS16_ALL_ARGS) + { + args = 4; + statics = 0; + } + else if (amask == MIPS16_ALL_STATICS) + { + args = 0; + statics = 4; + } + else + { + args = amask >> 2; + statics = amask & 3; + } + + if (args > 0) { + (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[4]); + if (args > 1) + (*info->fprintf_func) (info->stream, "-%s", + mips_gpr_names[4 + args - 1]); + need_comma = 1; + } + + framesz = (((l >> 16) & 0xf0) | (l & 0x0f)) * 8; + if (framesz == 0 && !use_extend) + framesz = 128; + + (*info->fprintf_func) (info->stream, "%s%d", + need_comma ? "," : "", + framesz); + + if (l & 0x40) /* $ra */ + (*info->fprintf_func) (info->stream, ",%s", mips_gpr_names[31]); + + nsreg = (l >> 24) & 0x7; + smask = 0; + if (l & 0x20) /* $s0 */ + smask |= 1 << 0; + if (l & 0x10) /* $s1 */ + smask |= 1 << 1; + if (nsreg > 0) /* $s2-$s8 */ + smask |= ((1 << nsreg) - 1) << 2; + + /* Find first set static reg bit. */ + for (i = 0; i < 9; i++) + { + if (smask & (1 << i)) + { + (*info->fprintf_func) (info->stream, ",%s", + mips_gpr_names[i == 8 ? 30 : (16 + i)]); + /* Skip over string of set bits. */ + for (j = i; smask & (2 << j); j++) + continue; + if (j > i) + (*info->fprintf_func) (info->stream, "-%s", + mips_gpr_names[j == 8 ? 30 : (16 + j)]); + i = j + 1; + } + } + + /* Statics $ax - $a3. */ + if (statics == 1) + (*info->fprintf_func) (info->stream, ",%s", mips_gpr_names[7]); + else if (statics > 0) + (*info->fprintf_func) (info->stream, ",%s-%s", + mips_gpr_names[7 - statics + 1], + mips_gpr_names[7]); + } + break; + default: /* xgettext:c-format */ (*info->fprintf_func) diff --git a/opcodes/mips16-opc.c b/opcodes/mips16-opc.c index 0459582e20f..4e5ae44752f 100644 --- a/opcodes/mips16-opc.c +++ b/opcodes/mips16-opc.c @@ -226,6 +226,8 @@ const struct mips_opcode mips16_opcodes[] = {"jalrc", "R,x", 0xe8c0, 0xf8ff, WR_31|RD_x|TRAP, 0, 0 }, {"jrc", "x", 0xe880, 0xf8ff, RD_x|TRAP, 0, 0 }, {"jrc", "R", 0xe8a0, 0xffff, RD_31|TRAP, 0, 0 }, +{"restore", "M", 0x6400, 0xff80, WR_31|RD_SP|WR_SP|TRAP, 0, 0 }, +{"save", "m", 0x6480, 0xff80, RD_31|RD_SP|WR_SP|TRAP, 0, 0 }, {"seb", "x", 0xe891, 0xf8ff, WR_x|RD_x, 0, 0 }, {"seh", "x", 0xe8b1, 0xf8ff, WR_x|RD_x, 0, 0 }, {"sew", "x", 0xe8d1, 0xf8ff, WR_x|RD_x, 0, I3 }, |