Commit Graph

39 Commits

Author SHA1 Message Date
H. Peter Anvin
19e2010536 Speed up the disassembler by allowing prefixed instruction tables
Modify the disassembler so that we can have separate instruction
tables for prefixed instructions.  As it was, all instructions which
started with 0F were linearly searched, and that is by now more than
half the instruction set.
2007-09-18 15:08:20 -07:00
H. Peter Anvin
7786c364b4 Disassembler support for SSE5 instructions
Support for the SSE5 instruction format in the disassembler.

Also adds some comments to insnsd.c for easier debugging.
2007-09-17 18:45:44 -07:00
H. Peter Anvin
7eb4a38793 Initial support for four arguments per instruction
For SSE5, we will need to support four arguments per instruction.
2007-09-17 15:49:30 -07:00
H. Peter Anvin
cb9b690ae6 Add (untested!) SSSE3, SSE4.1, SSE4.2 instructions
Add the SSSE3, SSE4.1 and SSE4.2 instruction sets.  Change \332 to be
a literal 0xF2 prefix, by analog with \333 for 0xF3 prefix (the
previous \332 flag changed to \335).  This is necessary to get the REX
prefix in the right place for instructions that use it.

We are going to have to go in and change existing instruction patterns
which use these, as well.
2007-09-12 21:58:51 -07:00
H. Peter Anvin
0da6b580eb Support r/m operands for non-integer types
Support r/m operands for non-integer operands types, i.e. mmx or xmm
operands.  This allows mmx and xmm operands to be written more
compactly, speeding up the assembler.
2007-09-12 21:04:39 -07:00
H. Peter Anvin
62cb606f68 Handle instructions which can have both REX.W and OSP 2007-09-11 22:44:03 +00:00
H. Peter Anvin
2ba7ed7122 ndisasm: handle \366 codes, prefer unprefixed instructions
- Implement \366 codes in ndisasm
- Prefer instruction patterns without loose prefixes if possible
- Fix improper initialization of operands in ndisasm
2007-09-11 22:13:17 +00:00
H. Peter Anvin
bfb888c015 Quiet gcc warning about uninitialized variables 2007-09-11 04:26:44 +00:00
H. Peter Anvin
3360d79369 Make the big instruction arrays "const"
Make the big instruction arrays "const", so they end up in readonly
storage.  While we're at it, move their prototypes into insns.h.
2007-09-11 04:16:57 +00:00
H. Peter Anvin
99c4ecd18f Implement REL/ABS modifiers
Implement "REL" and "ABS" modifiers for offsets in 64-bit mode.  This
replaces "rip+XXX" type addressing.  The infrastructure to set the default
mode is there, but there is nothing to throw the switch just yet.
2007-08-28 23:06:00 +00:00
H. Peter Anvin
ce2b397f1e Fix the handling of the \313 code.
\313 indicates a fixed 64-bit address size.  It was incorrectly
documented and incorrectly implemented in the assembler, and was
unimplemented in the disassembler.
2007-05-30 22:21:11 +00:00
H. Peter Anvin
3df97a7270 Get rid of magic open-coded "register numbers"
Get rid of magic open-coded register numbers.  We now keep track of
a total of three different kinds of register numbers: the register
enumeration (regs.h), the x86 register value, and the register flags.
That has all the information we need.

Additionally, do massive revamping of the EA generation code and the
REX generation logic.
2007-05-30 03:25:21 +00:00
H. Peter Anvin
dbf130e681 Rename REGNORM to REG_EA
Rename REGNORM to REG_EA to make the distinction between REG_GPR and
REG_EA clearer.
2007-05-30 00:18:26 +00:00
H. Peter Anvin
5a640e1161 Clean up the existing operand flag definitions, and document 2007-05-29 23:57:12 +00:00
H. Peter Anvin
0db11e236b Handle "LOCK as REX.R" for MOV CRx; fix warning for invalid 64-bit regs
- MOV gpr,CRx or MOV CRx,gpr can access high control registers with a LOCK
  prefix; handle that in both the assembler and disassembler.
- Get a saner error message when trying to access high resources in
  non-64-bit mode.
2007-04-17 20:23:11 +00:00
H. Peter Anvin
7cf03aff4f More 64-bit ndisasm fixes.
In particular, now we should handle A0-A3 instructions.
2007-04-16 02:39:56 +00:00
H. Peter Anvin
b061d595fb Fixes for 64-bit ndisasm.
This fixes some of the most glaring bugs in ndisasm 64-bit mode.  We're
still getting redundant prefixes for unknown reason, however.
2007-04-16 02:02:06 +00:00
H. Peter Anvin
0ee014231f Initial 64-bit support for ndisasm. Still a work in progress.
64-bit support for ndisasm.  This is very much an initial attempt, and
there are guaranteed to be bugs in the code.  However, some *very*
preliminary testing seems to indicate it's not completely off-base.
2007-04-16 01:18:30 +00:00
Keith Kanios
93f2e9a5a1 c99 printf/fprintf compliance. 2007-04-14 00:10:59 +00:00
Keith Kanios
a6dfa78b78 Fixed distinction between char and int8_t data types. 2007-04-13 16:47:53 +00:00
Keith Kanios
b7a89544d0 General push for x86-64 support, dubbed 0.99.00. 2007-04-12 02:40:54 +00:00
H. Peter Anvin
e2c80181b6 Apply Nindent to all .c and .h files 2005-01-15 22:15:51 +00:00
Ed Beroset
64ab51965a Added todo item to point out the somewhat tricky fact about snprintf's
return value.
2004-12-15 23:32:57 +00:00
Ed Beroset
258fcafe88 Corrected typo in variable name. 2004-12-15 23:00:13 +00:00
Ed Beroset
9234817aa4 changed sprintf to more secure snprintf to prevent vulnerability to buffer
overflow exploits.
2004-12-15 18:27:50 +00:00
H. Peter Anvin
10101f26bc Add support for the new instructions in Prescott 2003-02-24 23:22:45 +00:00
H. Peter Anvin
c9f57c24d0 Fixes from Bart Oldeman 2002-09-19 04:27:01 +00:00
H. Peter Anvin
bfebdb0a07 "const"-ipation fixes from Trevor Woerner 2002-09-12 02:23:54 +00:00
H. Peter Anvin
232badbbbc This is the "megapatch":
a) Automatically generate dependencies for all Makefiles;
b) Move register definitions to a separate .dat file;
c) Add support for "unimplemented but there in theory" registers.
2002-06-06 02:41:20 +00:00
H. Peter Anvin
d308de119c Make the disassembler correctly handle the new \34-\36 and \44-\46 codes. 2002-06-02 05:35:05 +00:00
H. Peter Anvin
17799b40c0 JMP instructions use the operand size prefix, not the address size
prefix, to determine the size of the jump target.
2002-05-21 03:31:21 +00:00
H. Peter Anvin
4cf1748e68 NASM 0.98.11 2002-04-30 21:01:38 +00:00
H. Peter Anvin
ef7468f4ec NASM 0.98p7 2002-04-30 20:57:59 +00:00
H. Peter Anvin
4836e3374e NASM 0.98p3.5 2002-04-30 20:56:43 +00:00
H. Peter Anvin
eba20a73f2 NASM 0.98p3 2002-04-30 20:53:55 +00:00
H. Peter Anvin
76690a12ad NASM 0.96 2002-04-30 20:52:49 +00:00
H. Peter Anvin
6768eb71d8 NASM 0.95 2002-04-30 20:52:26 +00:00
H. Peter Anvin
d7ed89eac9 NASM 0.94 2002-04-30 20:52:08 +00:00
H. Peter Anvin
ea6e34db64 NASM 0.91 2002-04-30 20:51:32 +00:00