sanchayanmaity/gem5
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
4950 commits 2 branches 0 tags 204 MiB
Commit graph

260 commits

Author SHA1 Message Date
Gabe Black
fb6cdf09cb X86: Make a microcode branch microop. 
Also some touch up for ruflag.

--HG--
extra : convert_revision : 829947169af25ca6573f53b9430707101c75cc23
 2007-08-07 15:19:26 -07:00
Gabe Black
30e777a5d3 X86: Implement microops and instructions that manipulate the flags register. 
--HG--
extra : convert_revision : 566841577bf4a98cac0b65292fe0f7daf89a9203
 2007-08-04 20:24:18 -07:00
Gabe Black
802f13e6bd X86: Make 64 bit unaligned accesses work as well as the other sizes. 
There is a fundemental flaw in how unaligned accesses are supported, but this
is still an improvement.

--HG--
extra : convert_revision : 1c20b524ac24cd4a812c876b067495ee6a7ae29f
 2007-08-04 20:22:20 -07:00
Gabe Black
b9793c2506 X86: Make the open flags correct. 
--HG--
extra : convert_revision : 2dc81345176d1de247a567d1f748e2b2bd05f829
 2007-08-04 20:18:20 -07:00
Gabe Black
fc6b2cceb4 X86: Make fixed register operands ignore register index extensions from the REX prefix. 
The only cases where this was the correct behavior are now handled with the
"B" operand type, and doing things this way was breaking some instructions,
notably a shift.

--HG--
extra : convert_revision : 072346d4f541edaceba7aecc26ba8d2cd756e481
 2007-08-04 20:17:31 -07:00
Gabe Black
6f3bb03a3f X86: Implement the cmpxchg instruction. 
--HG--
extra : convert_revision : b9e172bcb9551edf65c63f26dfa07d771edf3e1e
 2007-08-04 20:15:27 -07:00
Gabe Black
e410a925df X86: Start implementing segmentation support. 
Make instructions observe segment prefixes, default segment rules, segment
base addresses.
Also fix some microcode and add sib and riprel "keywords" to the x86
specialization of the microassembler.

--HG--
extra : convert_revision : be5a3b33d33f243ed6e1ad63faea8495e46d0ac9
 2007-08-04 20:12:54 -07:00
Gabe Black
ced6cbcccf X86: Create a base enum value for indexing into a region of the miscregs. 
This lets you index into a group of registers without having to know
explicitly which one is the lowest in that group.

--HG--
extra : convert_revision : e3cad25a1c5910955204c37177b049ca9834cfd9
 2007-08-04 20:07:42 -07:00
Gabe Black
0e6be2a9b1 X86: Add the arch_prctl system call and fix up some microcoding. 
The arch_prctl system call is used to set and get the FS and GS segment
bases. The FS segment is use for TLS, so glibc needs to be able to set it
up.

--HG--
extra : convert_revision : 79501491a15967a7a862add846ff88a934fb1b37
 2007-08-04 20:02:41 -07:00
Gabe Black
f4b89cd897 X86: Get rid of some debug warnings. 
Get rid of some warnings that were accidentally committed.

--HG--
extra : convert_revision : e800dbce253f6ba759932ca47d64bf98129e4177
 2007-08-02 16:28:01 -07:00
Gabe Black
4af5740afd X86: Finally get the x86 initial stack frame right. 
After very carefully reading through the Linux source, I'm pretty confident I now know -exactly- how the initial stack frame is constructed, filled, and aligned.

--HG--
extra : convert_revision : 3c654ade7e458bdd5445026860f11175f383a65f
 2007-08-02 15:12:18 -07:00
Gabe Black
85b661e35d X86: Fix special case with SIB index register and REX prefix. 
--HG--
extra : convert_revision : b305708a722f2a08cb55c4548c5616fcbe6c5d68
 2007-08-02 15:09:12 -07:00
Gabe Black
e719a3e4c0 Fix how the "cmd" parameter is set in se.py and remove hack in x86 process initialization code. 
--HG--
extra : convert_revision : 1fc741eea956ebfa4cef488eef4333d1f50617a6
 2007-08-01 18:19:23 -07:00
Gabe Black
5b5e2fd6cd X86: Hide the irrelevant portions of the address components for load and store microops. 
--HG--
extra : convert_revision : a5ac6fefa09882f0833537e23f1ac0477bc89bb9
 2007-08-01 14:34:59 -07:00
Gabe Black
e5e5b0119d X86: Fix for compilation bug with new cache code. 
--HG--
extra : convert_revision : 073c6db0796cd2c11b8293b382b438a2a959b821
 2007-08-01 12:49:58 -07:00
Gabe Black
4b29d22386 X86: Get rid of initialization of R11 
R11 is just junk after the start of exectuion because we're "returning" from
an execve call and linux destroys the contents of rcx and r11 on system calls.

--HG--
extra : convert_revision : 6bf69a50ce56e0355dfdd41524163874340beec0
 2007-08-01 12:00:32 -07:00
Gabe Black
4bdabe1254 Add a flag to indicate an instruction triggers a syscall in SE mode. 
--HG--
extra : convert_revision : 1d0b3afdd8254f5b2fb4bbff1fa4a0536f78bb06
 2007-07-31 17:34:08 -07:00
Gabe Black
55ade789d3 X86: Add operand type information to the fnstcw and fldw instruction placeholders. 
These are the only floating point instructions that get used in my simple hello world test. These instructions are for setting up the floating point control register. Their not being implemented doesn't affect anything because floating point isn't used.

--HG--
extra : convert_revision : 4dfb9ef2a5665f034946c504978029e8799e64cd
 2007-07-31 14:55:06 -07:00
Gabe Black
ae3e1d22fc X86: Add decoding for x87 floating point. 
--HG--
extra : convert_revision : 08f0f4a3d77a2c5eb9b5ca0cae7d0be9a72febec
 2007-07-30 17:54:01 -07:00
Gabe Black
463e8a7516 X86: Attach the "DIV" instruction implementation to the decoder. 
--HG--
extra : convert_revision : 8aef1c8d1ced2db998ed0d31241cadc17e19eadd
 2007-07-30 15:44:48 -07:00
Gabe Black
595ff465e5 X86: Remove a naming conflict between the register index parameters and the "picked" register values. 
--HG--
extra : convert_revision : 7b2c1be509478153ebf396841e4cbeccee3e03d1
 2007-07-30 15:44:21 -07:00
Gabe Black
77482dc439 X86: __pad0 should be a 4 byte pad, not a 4 long array of 4 byte pads. 
--HG--
extra : convert_revision : e0d5ab617bc95d5d714fa9fcdf0a448874aef886
 2007-07-30 15:43:20 -07:00
Gabe Black
f02bb63894 X86: Turn on the exit_group, exit, munmap, and write syscalls. 
--HG--
extra : convert_revision : e358c18cd999a8e274108e06502c3324c2d12d3b
 2007-07-30 15:42:42 -07:00
Gabe Black
43f0be5253 X86: Use an mmap base address that matches what an actual machine uses. 
--HG--
extra : convert_revision : 98521797bbc6360301b3c6a6b1b8e28236ef570e
 2007-07-30 15:42:04 -07:00
Gabe Black
890e583163 X86: Set up RIP relative LEA instructions operands correctly. 
--HG--
extra : convert_revision : 820cafadd550487c0d62c5082261b0886fce4f0d
 2007-07-30 15:41:08 -07:00
Gabe Black
44c3419e1a X86: Implement unsigned divide. The non-byte version ignores rdx which it shouldn't. 
--HG--
extra : convert_revision : 07e5509fb8ed9d73c144d6f52951ebc02e7c0032
 2007-07-30 15:40:39 -07:00
Gabe Black
74fcf117dd X86: Allow RIP relative decode on -all- memory forms of operands. 
--HG--
extra : convert_revision : 8af62cda2ce1c4acfa26a028a4f7506647bc27f7
 2007-07-30 15:39:25 -07:00
Gabe Black
65db30992c X86: Take into account the regular registers and the microcode registers when decided whether or not to fold. 
--HG--
extra : convert_revision : 26feec984dec61799c4afb03a4503a53c35872c5
 2007-07-30 15:38:40 -07:00
Gabe Black
9536120845 X86: Fix up the stat structure. This probably still isn't right. 
--HG--
extra : convert_revision : 2e2a22cdf3abe648c9e1309b9070cfd10fc4a8b8
 2007-07-30 13:31:59 -07:00
Gabe Black
a1b193f026 X86: Hook in the new instructions. 
--HG--
extra : convert_revision : c4233001b35b52161083482841593ec28da6ff7d
 2007-07-30 13:31:27 -07:00
Gabe Black
ab8ba813c9 X86: Turn on some system calls, and make the kernel version match my development machine. 
--HG--
extra : convert_revision : 2f1969a45aa82708dc4cddef09c01306f76f0a81
 2007-07-30 13:30:41 -07:00
Gabe Black
9e2b1f8630 X86: Make sure FP_Base_DepTag is big enough to avoid trouble. 
--HG--
extra : convert_revision : 7e0a83d5deb7fc9aaa69b7d024ea6ae6890df133
 2007-07-30 13:29:56 -07:00
Gabe Black
18be07289f X86: Implement a stub CPUID function which is hardcode to return certain values. 
--HG--
extra : convert_revision : 4085e04fd13e834646106faa55726d07d9631f42
 2007-07-30 13:29:33 -07:00
Gabe Black
dbc979b9e2 X86: Force jumps to use 64 bit operand size. 
--HG--
extra : convert_revision : 1c3685e7f4d07d5b4ded6c78b794964f51a358a9
 2007-07-30 13:28:31 -07:00
Gabe Black
bae96272a1 X86: Make instructions use pick, and implement/adjust some multiplication microops and instructions. 
--HG--
extra : convert_revision : 5c56f6819ee07d936b388b3d1810a3b73db84f9c
 2007-07-30 13:28:05 -07:00
Gabe Black
fad96cd0fc X86: Make merge and pick work with high bytes. Fix a sizing issue in pick. 
--HG--
extra : convert_revision : 4ddc2ca8c23bb7e90a646329ebf27a013ac5e3d6
 2007-07-30 13:26:48 -07:00
Gabe Black
0d31a41304 X86: Make register names in disassembly reflect high bytes. 
--HG--
extra : convert_revision : e2891581e5504de0a2c8e5932fd22425cafd4fc7
 2007-07-30 13:26:14 -07:00
Gabe Black
31a862b8f1 X86: missed a file which adds a "fold" bit. 
--HG--
extra : convert_revision : 2c8eea425221d069a9bb888c8f18839843061899
 2007-07-30 13:25:38 -07:00
Gabe Black
da84aa95a9 Make the register indices use the appropriate "fold" bit. 
--HG--
extra : convert_revision : 89e15e2ef1f709f2c09238b78f94505ce8ef146d
 2007-07-30 13:25:00 -07:00
Gabe Black
d8beeff324 X86: Make disassembly use the final register index. Add bits to indicate whether or not register indexes should be "folded". 
--HG--
extra : convert_revision : 4b46e71ca91e480f6e1662b7f37b75240d6598e9
 2007-07-30 13:23:33 -07:00
Gabe Black
9b5421dcba X86: Missed a file for adding a bit to indicate that an REX prefix was present. 
--HG--
extra : convert_revision : f1bbd5165a7415d0daf27660575d30c41510f531
 2007-07-30 13:20:08 -07:00
Gabe Black
4b3a20cdec X86: Implement LEAVE 
--HG--
extra : convert_revision : c642d5018ece82c644e1cfa389b2d3dbd6ab5ffd
 2007-07-30 13:19:11 -07:00
Gabe Black
e70ffb0117 X86: Add a bitfield to indicate whether or not an REX prefix was present. 
--HG--
extra : convert_revision : 9c4802f6c6e4eaab36aac900e2c7576682cb0f33
 2007-07-30 13:17:34 -07:00
Gabe Black
7309d5ee45 X86: Make logic instructions flag setting work. 
The instructions now ask for the appropriate flags to be set, and the microops do the "right thing" with the CF and OF flags, namely zero them.

--HG--
extra : convert_revision : 85138a832f44c879bf8a11bd3a35b58be6272ef3
 2007-07-29 13:51:40 -07:00
Gabe Black
1af50a9e8b X86: Make arithmetic instructions set the appropriate flags. 
--HG--
extra : convert_revision : 3bdef3876c7b86bc93365edee876b74a201d625f
 2007-07-29 13:50:10 -07:00
Gabe Black
5e34c62b3b X86: Initial stack frame fixes and constant shuffling. 
The initial stack frame for x86 is now substantially more correct. The fixes made here can be back ported to SPARC and possible the other ISAs as well. The auxiliary vector types were moved to the LiveProcess base class because they are independent of ISA. Some of the types may only apply to Linux, though, so they may have to be moved.

--HG--
extra : convert_revision : 89ace35fcc8eb9586d2fee8eeccbc3686499ef24
 2007-07-29 01:33:06 -07:00
Gabe Black
e5f5890365 X86: Make limm use merge and allow overriding the data size. 
--HG--
extra : convert_revision : c6057226b8ff8f272612a9d3bf7d1d9ba90c819b
 2007-07-29 01:30:28 -07:00
Gabe Black
33847f8c83 X86: return -return_value.value() on failure. 
--HG--
extra : convert_revision : d8e1486ff075b2917be62a0008f83fd6c9e4c09a
 2007-07-29 01:27:34 -07:00
Gabe Black
d995575342 X86: Fix popa and push with the stack pointer. 
POPA used st instead of ld, and it didn't skip rsp. push rsp needs to store the -original- value of the stack pointer.

--HG--
extra : convert_revision : 376370c99b6ab60fb2bc4cd4f0a6dce71153ad06
 2007-07-29 01:26:47 -07:00
Gabe Black
3dcd848ec3 X86: Fix a bug with merge 
Merge was returning the value to merge in, not the actual result of the merge.

--HG--
extra : convert_revision : 230b4b5064037d099ae7859edabdf5be84603849
 2007-07-29 01:24:57 -07:00