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author | Ian Lance Taylor <ian@airs.com> | 1997-01-28 21:49:18 +0000 |
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committer | Ian Lance Taylor <ian@airs.com> | 1997-01-28 21:49:18 +0000 |
commit | 20d430180173f00e57c7a920d41d08e6d9227fce (patch) | |
tree | 154a3a995a034b5ad33e280284608f13b7fe65b4 /opcodes | |
parent | b4aabb244ebc7b814f51531cfc9f0301f666d806 (diff) | |
download | gdb-20d430180173f00e57c7a920d41d08e6d9227fce.zip gdb-20d430180173f00e57c7a920d41d08e6d9227fce.tar.gz gdb-20d430180173f00e57c7a920d41d08e6d9227fce.tar.bz2 |
* mips-dis.c (print_insn_mips16): Set insn_info information.
(print_mips16_insn_arg): Likewise.
Diffstat (limited to 'opcodes')
-rw-r--r-- | opcodes/ChangeLog | 3 | ||||
-rw-r--r-- | opcodes/mips-dis.c | 46 |
2 files changed, 49 insertions, 0 deletions
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog index 0e443a6..0f51c03 100644 --- a/opcodes/ChangeLog +++ b/opcodes/ChangeLog @@ -1,5 +1,8 @@ Tue Jan 28 15:57:34 1997 Ian Lance Taylor <ian@cygnus.com> + * mips-dis.c (print_insn_mips16): Set insn_info information. + (print_mips16_insn_arg): Likewise. + * mips-dis.c (print_insn_mips16): Better handling of an extend opcode followed by an instruction which can not be extended. diff --git a/opcodes/mips-dis.c b/opcodes/mips-dis.c index 745b6bf..a585571 100644 --- a/opcodes/mips-dis.c +++ b/opcodes/mips-dis.c @@ -351,6 +351,13 @@ print_insn_mips16 (memaddr, info) int extend; const struct mips_opcode *op, *opend; + info->insn_info_valid = 1; + info->branch_delay_insns = 0; + info->data_size = 0; + info->insn_type = dis_nonbranch; + info->target = 0; + info->target2 = 0; + status = (*info->read_memory_func) (memaddr, buffer, 2, info); if (status != 0) { @@ -393,6 +400,7 @@ print_insn_mips16 (memaddr, info) { (*info->fprintf_func) (info->stream, "extend 0x%x", (unsigned int) extend); + info->insn_type = dis_noninsn; return length; } @@ -414,6 +422,7 @@ print_insn_mips16 (memaddr, info) { (*info->fprintf_func) (info->stream, "extend 0x%x", (unsigned int) extend); + info->insn_type = dis_noninsn; return length - 2; } @@ -462,6 +471,13 @@ print_insn_mips16 (memaddr, info) info); } + if ((op->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0) + { + info->branch_delay_insns = 1; + if (info->insn_type != dis_jsr) + info->insn_type = dis_branch; + } + return length; } } @@ -469,6 +485,7 @@ print_insn_mips16 (memaddr, info) if (use_extend) (*info->fprintf_func) (info->stream, "0x%x", extend | 0xf000); (*info->fprintf_func) (info->stream, "0x%x", insn); + info->insn_type = dis_noninsn; return length; } @@ -612,21 +629,33 @@ print_mips16_insn_arg (type, op, l, use_extend, extend, memaddr, info) case '5': nbits = 5; immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; + info->insn_type = dis_dref; + info->data_size = 1; break; case 'H': nbits = 5; shift = 1; immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; + info->insn_type = dis_dref; + info->data_size = 2; break; case 'W': nbits = 5; shift = 2; immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; + if ((op->pinfo & MIPS16_INSN_READ_PC) == 0 + && (op->pinfo & MIPS16_INSN_READ_SP) == 0) + { + info->insn_type = dis_dref; + info->data_size = 4; + } break; case 'D': nbits = 5; shift = 3; immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; + info->insn_type = dis_dref; + info->data_size = 8; break; case 'j': nbits = 5; @@ -645,11 +674,17 @@ print_mips16_insn_arg (type, op, l, use_extend, extend, memaddr, info) nbits = 8; shift = 2; immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; + /* FIXME: This might be lw, or it might be addiu to $sp or + $pc. We assume it's load. */ + info->insn_type = dis_dref; + info->data_size = 4; break; case 'C': nbits = 8; shift = 3; immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; + info->insn_type = dis_dref; + info->data_size = 8; break; case 'U': nbits = 8; @@ -673,6 +708,7 @@ print_mips16_insn_arg (type, op, l, use_extend, extend, memaddr, info) signedp = 1; pcrel = 1; branch = 1; + info->insn_type = dis_condbranch; break; case 'q': nbits = 11; @@ -680,18 +716,24 @@ print_mips16_insn_arg (type, op, l, use_extend, extend, memaddr, info) signedp = 1; pcrel = 1; branch = 1; + info->insn_type = dis_branch; break; case 'A': nbits = 8; shift = 2; immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; pcrel = 1; + /* FIXME: This can be lw or la. We assume it is lw. */ + info->insn_type = dis_dref; + info->data_size = 4; break; case 'B': nbits = 5; shift = 3; immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; pcrel = 1; + info->insn_type = dis_dref; + info->data_size = 8; break; case 'E': nbits = 5; @@ -775,6 +817,7 @@ print_mips16_insn_arg (type, op, l, use_extend, extend, memaddr, info) } val = (baseaddr & ~ ((1 << shift) - 1)) + immed; (*info->print_address_func) (val, info); + info->target = val; } } break; @@ -784,6 +827,9 @@ print_mips16_insn_arg (type, op, l, use_extend, extend, memaddr, info) extend = 0; l = ((l & 0x1f) << 23) | ((l & 0x3e0) << 13) | (extend << 2); (*info->print_address_func) ((memaddr & 0xf0000000) | l, info); + info->insn_type = dis_jsr; + info->target = (memaddr & 0xf0000000) | l; + info->branch_delay_insns = 1; break; case 'l': |