riscv-isa-sim.git
9 years agoOn misaligned fetch, set EPC to target, not branch itself
Andrew Waterman [Sat, 3 Jan 2015 01:29:05 +0000 (17:29 -0800)]
On misaligned fetch, set EPC to target, not branch itself

9 years agoReduce dependences on auto-generated code
Andrew Waterman [Fri, 2 Jan 2015 23:09:04 +0000 (15:09 -0800)]
Reduce dependences on auto-generated code

In particular, precompiled headers ideally won't depend on any.

9 years agoMerge branch 'netbsd-autoconf'
Palmer Dabbelt [Tue, 30 Dec 2014 21:24:51 +0000 (13:24 -0800)]
Merge branch 'netbsd-autoconf'

This contains some changes that fix the build on NetBSD.

9 years agoautoreconf 65ba70071d11cc19b3dc85c047c5fea6d4d7bc0d
Palmer Dabbelt [Mon, 29 Dec 2014 21:07:13 +0000 (13:07 -0800)]
autoreconf 65ba70071d11cc19b3dc85c047c5fea6d4d7bc0d

9 years agoAllow Spike to build on NetBSD
Reinoud Zandijk [Mon, 29 Dec 2014 21:06:09 +0000 (13:06 -0800)]
Allow Spike to build on NetBSD

Under NetBSD, dlopen() is in libc so no extra libs are needed.

9 years agoSupport building from within root directory
Andrew Waterman [Sat, 20 Dec 2014 21:37:14 +0000 (13:37 -0800)]
Support building from within root directory

9 years agoFix makefile race condition
Andrew Waterman [Sat, 20 Dec 2014 21:26:48 +0000 (13:26 -0800)]
Fix makefile race condition

9 years agoMerge pull request #11 from arunthomas/readme
Andrew Waterman [Fri, 12 Dec 2014 00:52:56 +0000 (16:52 -0800)]
Merge pull request #11 from arunthomas/readme

README: use gnu-toolchain

9 years agoREADME: use gnu-toolchain
Arun Thomas [Thu, 11 Dec 2014 16:20:22 +0000 (11:20 -0500)]
README: use gnu-toolchain

9 years agozero-extend 32b instructions for vxcptaux
Andrew Waterman [Fri, 5 Dec 2014 09:08:27 +0000 (01:08 -0800)]
zero-extend 32b instructions for vxcptaux

9 years agoSupport 2/4/6/8-byte instructions
Andrew Waterman [Fri, 5 Dec 2014 07:10:33 +0000 (23:10 -0800)]
Support 2/4/6/8-byte instructions

Most of the complexity is in instruction address translation, since
instructions may span page boundaries.

9 years agoSet badvaddr on instruction page faults
Andrew Waterman [Fri, 5 Dec 2014 07:08:01 +0000 (23:08 -0800)]
Set badvaddr on instruction page faults

This supports distinguishing the EPC (the address of the first byte of the
faulting instruction) from the address of the page fault (potentially some
bytes later).

9 years agoUpdate register names to match new ABI
Andrew Waterman [Wed, 3 Dec 2014 23:26:55 +0000 (15:26 -0800)]
Update register names to match new ABI

9 years agoImplement timer faithfully
Andrew Waterman [Mon, 1 Dec 2014 06:56:02 +0000 (22:56 -0800)]
Implement timer faithfully

rdcycle/rdinstret now have single-instruction granularity.  Questionable
behavior when timer interrupts occurred around the same time as the compare
register is written should be fixed.

9 years agoFactor out the dummy RoCC accelerator
Andrew Waterman [Tue, 25 Nov 2014 21:39:53 +0000 (13:39 -0800)]
Factor out the dummy RoCC accelerator

9 years agoRevert "Enable support for the four custom instructions"
Yunsup Lee [Sat, 22 Nov 2014 16:58:20 +0000 (08:58 -0800)]
Revert "Enable support for the four custom instructions"

This reverts commit fd18dc43f64d1938144f6c883ba4a2ca247611c6.

Refactoring support for custom instructions.

9 years agoSuppress harmless warnings
Andrew Waterman [Thu, 20 Nov 2014 02:08:17 +0000 (18:08 -0800)]
Suppress harmless warnings

specifically, unused variables in auto-generated code.

9 years agoAdd missing makefile dependence
Andrew Waterman [Thu, 20 Nov 2014 02:07:53 +0000 (18:07 -0800)]
Add missing makefile dependence

This manifested as a spurious compile warning when using make -j.

10 years agoMerge pull request #8 from arunthomas/dummy_rocc_test
Andrew Waterman [Fri, 7 Nov 2014 22:52:44 +0000 (14:52 -0800)]
Merge pull request #8 from arunthomas/dummy_rocc_test

dummy-rocc-test build fix

10 years agodummy-rocc-test build fix
Arun Thomas [Thu, 30 Oct 2014 14:20:08 +0000 (10:20 -0400)]
dummy-rocc-test build fix

10 years agoMerge pull request #4 from arunthomas/custom_inst
Yunsup Lee [Fri, 24 Oct 2014 16:54:28 +0000 (09:54 -0700)]
Merge pull request #4 from arunthomas/custom_inst

Enable support for the four custom instructions

10 years agoEnable support for the four custom instructions
Arun Thomas [Thu, 23 Oct 2014 20:49:28 +0000 (16:49 -0400)]
Enable support for the four custom instructions

* Update generated encoding.h (generated from riscv-opcodes)
* Add empty implementations for the custom instructions

10 years agoAvoid some unused variable warnings
Andrew Waterman [Sat, 27 Sep 2014 18:18:15 +0000 (11:18 -0700)]
Avoid some unused variable warnings

...and also save some space by not defining the register names in a header.

10 years agoAvoid use of __int128_t
Andrew Waterman [Sat, 27 Sep 2014 18:01:22 +0000 (11:01 -0700)]
Avoid use of __int128_t

It is nonstandard, and GCC doesn't support it on 32-bit platforms. The
resulting code for MULH[[S]U] is crappier, but that doesn't really matter,
as these instructions are dynamically infrequent.

10 years agoMerge pull request #2 from arunthomas/build_fix
Scott Beamer [Sun, 21 Sep 2014 19:20:57 +0000 (12:20 -0700)]
Merge pull request #2 from arunthomas/build_fix

Update riscv.ac to set CPPFLAGS with fesvr include path

10 years agoUpdate riscv.ac to set CPPFLAGS with fesvr include path
Arun Thomas [Sun, 21 Sep 2014 01:35:11 +0000 (21:35 -0400)]
Update riscv.ac to set CPPFLAGS with fesvr include path

Need to set CPPFLAGS in riscv.ac in addition to configure

10 years agonow can build with clang
Scott Beamer [Sun, 14 Sep 2014 16:10:28 +0000 (09:10 -0700)]
now can build with clang
on os x, clang needs different flags than gcc to generate and use precompiled headers

10 years agoUpdate configure to set CPPFLAGS instead of CFLAGS with fesvr include path.
Jim Lawson [Thu, 28 Aug 2014 22:22:05 +0000 (15:22 -0700)]
Update configure to set CPPFLAGS instead of CFLAGS with fesvr include path.

Since we no longer are duplicating CFLAGS, ensure CPPFLAGS are set
correctly.

10 years agodon't include same flags twice
Scott Beamer [Thu, 28 Aug 2014 04:27:30 +0000 (21:27 -0700)]
don't include same flags twice

10 years agoclean up warnings from clang
Scott Beamer [Tue, 26 Aug 2014 01:23:47 +0000 (18:23 -0700)]
clean up warnings from clang

10 years agoAdded PC histogram option.
Christopher Celio [Fri, 15 Aug 2014 22:38:41 +0000 (15:38 -0700)]
Added PC histogram option.

  - Spits out all PCs (on 4B granularity) executed with count.
  - Requires a compile time configuration option.
  - Also requires a run-time flag.

10 years agoSupport uarch counters (degenerately)
Andrew Waterman [Fri, 8 Aug 2014 00:27:13 +0000 (17:27 -0700)]
Support uarch counters (degenerately)

10 years agofix typo in README
Scott Beamer [Thu, 7 Aug 2014 17:41:12 +0000 (10:41 -0700)]
fix typo in README

10 years agochange README to markdown
Sagar Karandikar [Tue, 5 Aug 2014 23:36:29 +0000 (16:36 -0700)]
change README to markdown

10 years agoadded support for register convention names in debug mode
Scott Beamer [Fri, 25 Jul 2014 00:05:53 +0000 (17:05 -0700)]
added support for register convention names in debug mode

10 years agocouple of more notes on debug mode
Scott Beamer [Wed, 16 Jul 2014 23:50:27 +0000 (16:50 -0700)]
couple of more notes on debug mode

10 years agonotes on using debug mode
Scott Beamer [Tue, 15 Jul 2014 17:50:22 +0000 (10:50 -0700)]
notes on using debug mode

10 years agoDisallow access to FCSR when FP is disabled
Andrew Waterman [Tue, 8 Jul 2014 20:25:04 +0000 (13:25 -0700)]
Disallow access to FCSR when FP is disabled

10 years agoUse precompiled headers to speed up compilation
Andrew Waterman [Mon, 7 Jul 2014 22:17:16 +0000 (15:17 -0700)]
Use precompiled headers to speed up compilation

10 years agoMinor refactoring
Andrew Waterman [Mon, 7 Jul 2014 21:03:27 +0000 (14:03 -0700)]
Minor refactoring

10 years agoCommit log now prints while interrupts are enabled.
Christopher Celio [Fri, 13 Jun 2014 10:52:48 +0000 (03:52 -0700)]
Commit log now prints while interrupts are enabled.

   - Previous behavior was to print the commit log only in user code.

10 years agoOnly print commit log if instruction commits
Andrew Waterman [Fri, 13 Jun 2014 09:42:54 +0000 (02:42 -0700)]
Only print commit log if instruction commits

10 years agoSet status.u64 to true on boot
Andrew Waterman [Thu, 12 Jun 2014 21:16:27 +0000 (14:16 -0700)]
Set status.u64 to true on boot

This isn't required by the ISA but it matches existing HW.

10 years agofix disassembly of bnez and friends
Andrew Waterman [Thu, 24 Apr 2014 23:01:33 +0000 (16:01 -0700)]
fix disassembly of bnez and friends

10 years agoMerge branch 'tm'
Stephen Twigg [Thu, 3 Apr 2014 23:54:34 +0000 (16:54 -0700)]
Merge branch 'tm'

10 years agoSync encoding in opcodes
Stephen Twigg [Thu, 3 Apr 2014 23:52:48 +0000 (16:52 -0700)]
Sync encoding in opcodes

10 years agoAdd ut_fclass_s/d hwacha (unused until encoding sync)
Stephen Twigg [Thu, 3 Apr 2014 23:52:34 +0000 (16:52 -0700)]
Add ut_fclass_s/d hwacha (unused until encoding sync)

10 years agoSupport RV32 RDTIMEH/RDCYCLEH/RDINSTRETH
Andrew Waterman [Tue, 18 Mar 2014 21:38:07 +0000 (14:38 -0700)]
Support RV32 RDTIMEH/RDCYCLEH/RDINSTRETH

10 years agospeed up compilation a bit
Andrew Waterman [Sat, 15 Mar 2014 23:48:16 +0000 (16:48 -0700)]
speed up compilation a bit

10 years agoNew FP encoding
Andrew Waterman [Wed, 12 Mar 2014 02:07:08 +0000 (19:07 -0700)]
New FP encoding

10 years agoAdd fclass.{s|d} instructions
Andrew Waterman [Fri, 7 Mar 2014 02:23:38 +0000 (18:23 -0800)]
Add fclass.{s|d} instructions

10 years agoadd hwacha vfmsv instructions
Yunsup Lee [Sun, 2 Mar 2014 08:49:32 +0000 (00:49 -0800)]
add hwacha vfmsv instructions

10 years agoadd extensions to riscv-dis for better disassembly
Yunsup Lee [Tue, 25 Feb 2014 11:44:34 +0000 (03:44 -0800)]
add extensions to riscv-dis for better disassembly

10 years agoRenumber uarch CSRs into custom CSR space
Andrew Waterman [Sat, 15 Feb 2014 01:31:41 +0000 (17:31 -0800)]
Renumber uarch CSRs into custom CSR space

10 years agoFix I$ simulator not making forward progress
Andrew Waterman [Fri, 14 Feb 2014 02:46:42 +0000 (18:46 -0800)]
Fix I$ simulator not making forward progress

10 years agoFix commit log when !debug
Andrew Waterman [Wed, 12 Feb 2014 09:32:11 +0000 (01:32 -0800)]
Fix commit log when !debug

10 years agoRevert to old AUIPC definition
Andrew Waterman [Tue, 11 Feb 2014 03:00:16 +0000 (19:00 -0800)]
Revert to old AUIPC definition

10 years agoClear EVEC LSBs, which kindly prevents a segfault
Andrew Waterman [Fri, 7 Feb 2014 09:15:49 +0000 (01:15 -0800)]
Clear EVEC LSBs, which kindly prevents a segfault

10 years agoFix disassembly of JAL
Andrew Waterman [Thu, 6 Feb 2014 22:03:07 +0000 (14:03 -0800)]
Fix disassembly of JAL

10 years agocommit missing definitions for uarch counters
Yunsup Lee [Thu, 6 Feb 2014 19:24:39 +0000 (11:24 -0800)]
commit missing definitions for uarch counters

10 years agoMove half precision instructions, add vfmsv, vfmvv
Quan Nguyen [Tue, 4 Feb 2014 04:21:19 +0000 (20:21 -0800)]
Move half precision instructions, add vfmsv, vfmvv

10 years agoFix linking on Darwin
Andrew Waterman [Sat, 1 Feb 2014 01:21:37 +0000 (17:21 -0800)]
Fix linking on Darwin

10 years agoDisasm now translates xor x0,x0,x0 as a machine-generated bubble ("-").
Christopher Celio [Wed, 29 Jan 2014 01:06:27 +0000 (17:06 -0800)]
Disasm now translates xor x0,x0,x0 as a machine-generated bubble ("-").

  It is very convenient for pipeline trace viewing to differentiate
  between compiler NOPs and pipeline bubbles.

10 years agoForce extension loaders to be linked in
Andrew Waterman [Tue, 28 Jan 2014 11:38:28 +0000 (03:38 -0800)]
Force extension loaders to be linked in

10 years agoEnable runtime loading of dynamic library with --extlib
Andrew Waterman [Mon, 27 Jan 2014 05:50:31 +0000 (21:50 -0800)]
Enable runtime loading of dynamic library with --extlib

10 years agoPrefer libraries located in current directory
Andrew Waterman [Mon, 27 Jan 2014 05:48:57 +0000 (21:48 -0800)]
Prefer libraries located in current directory

10 years agoEliminate hwacha <-> riscv circular dependence
Andrew Waterman [Mon, 27 Jan 2014 00:26:39 +0000 (16:26 -0800)]
Eliminate hwacha <-> riscv circular dependence

We now split out the spike executable into another subproject,
which depends on both rocket and hwacha

10 years agoLink subproject dynamic libraries correctly
Andrew Waterman [Mon, 27 Jan 2014 00:26:25 +0000 (16:26 -0800)]
Link subproject dynamic libraries correctly

10 years agoMerge softfloat_riscv into softfloat
Andrew Waterman [Sun, 26 Jan 2014 02:31:32 +0000 (18:31 -0800)]
Merge softfloat_riscv into softfloat

They really aren't independent libraries.

10 years agoRequire libdl for dynamic linking at runtime
Andrew Waterman [Fri, 24 Jan 2014 09:35:13 +0000 (01:35 -0800)]
Require libdl for dynamic linking at runtime

10 years agoDisassemble amoxor
Andrew Waterman [Fri, 24 Jan 2014 09:34:50 +0000 (01:34 -0800)]
Disassemble amoxor

10 years agoBuild and use shared libraries only
Andrew Waterman [Fri, 24 Jan 2014 09:23:08 +0000 (01:23 -0800)]
Build and use shared libraries only

10 years agoBuild and use shared libraries
Andrew Waterman [Fri, 24 Jan 2014 09:09:05 +0000 (01:09 -0800)]
Build and use shared libraries

10 years agoHandle CSR permissions correctly
Andrew Waterman [Fri, 24 Jan 2014 09:08:40 +0000 (01:08 -0800)]
Handle CSR permissions correctly

10 years agoUse auto-generated trap cause numbers
Andrew Waterman [Wed, 22 Jan 2014 00:20:58 +0000 (16:20 -0800)]
Use auto-generated trap cause numbers

10 years agoMerge branch 'confprec'
Quan Nguyen [Tue, 21 Jan 2014 04:33:22 +0000 (20:33 -0800)]
Merge branch 'confprec'

Conflicts:
hwacha/hwacha.mk.in

10 years agoInitialize tohost and fromhost to zero
Andrew Waterman [Thu, 16 Jan 2014 08:09:27 +0000 (00:09 -0800)]
Initialize tohost and fromhost to zero

Surprising we got away without doing this for so long

10 years agoImprove performance for branchy code
Andrew Waterman [Tue, 14 Jan 2014 00:42:02 +0000 (16:42 -0800)]
Improve performance for branchy code

We now use a heavily unrolled loop as the software I$, which allows the
host machine's branch target prediction to associate target PCs with
unique-ish host PCs.

10 years agoSpeed things up quite a bit
Andrew Waterman [Tue, 17 Dec 2013 18:18:47 +0000 (10:18 -0800)]
Speed things up quite a bit

10 years agoNew RDCYCLE encoding
Andrew Waterman [Mon, 9 Dec 2013 23:55:52 +0000 (15:55 -0800)]
New RDCYCLE encoding

10 years agoRemove debug printf in vsetprec
Quan Nguyen [Sat, 30 Nov 2013 04:21:36 +0000 (20:21 -0800)]
Remove debug printf in vsetprec

10 years agoAdd vsetprec instruction prototype
Quan Nguyen [Sat, 30 Nov 2013 04:10:46 +0000 (20:10 -0800)]
Add vsetprec instruction prototype

10 years agoUpdate to new privileged ISA
Andrew Waterman [Mon, 25 Nov 2013 12:42:03 +0000 (04:42 -0800)]
Update to new privileged ISA

10 years agoMerge branch 'master' of github.com:ucb-bar/riscv-isa-sim into HEAD
Quan Nguyen [Mon, 25 Nov 2013 05:59:52 +0000 (21:59 -0800)]
Merge branch 'master' of github.com:ucb-bar/riscv-isa-sim into HEAD

10 years agofix slli/slliw encoding bug
Yunsup Lee [Thu, 21 Nov 2013 22:42:32 +0000 (14:42 -0800)]
fix slli/slliw encoding bug

11 years agoadd accelerator disabled cause
Yunsup Lee [Wed, 6 Nov 2013 05:03:23 +0000 (21:03 -0800)]
add accelerator disabled cause

11 years agocorrectly trap when SR_EA is disabled
Yunsup Lee [Wed, 6 Nov 2013 05:01:34 +0000 (21:01 -0800)]
correctly trap when SR_EA is disabled

11 years agoFix declaration of half-precision instructions
Albert Ou [Tue, 5 Nov 2013 07:25:00 +0000 (23:25 -0800)]
Fix declaration of half-precision instructions

11 years agoRe-add Hwacha header file
Albert Ou [Tue, 5 Nov 2013 06:33:20 +0000 (22:33 -0800)]
Re-add Hwacha header file

11 years agoImplement "half-baked" half-precision instruction subset for Hwacha
Albert Ou [Tue, 5 Nov 2013 06:31:01 +0000 (22:31 -0800)]
Implement "half-baked" half-precision instruction subset for Hwacha

11 years agoMerge branch 'master' of github.com:ucb-bar/riscv-isa-sim into confprec
Albert Ou [Tue, 5 Nov 2013 06:26:53 +0000 (22:26 -0800)]
Merge branch 'master' of github.com:ucb-bar/riscv-isa-sim into confprec

11 years agoinclude stdexcept
Yunsup Lee [Tue, 29 Oct 2013 06:49:08 +0000 (23:49 -0700)]
include stdexcept

11 years agoPass target machine's return code back to OS
Andrew Waterman [Tue, 29 Oct 2013 03:37:39 +0000 (20:37 -0700)]
Pass target machine's return code back to OS

11 years agoAdd missing fcvt opcodes through riscv-opcodes
Quan Nguyen [Mon, 28 Oct 2013 06:02:23 +0000 (23:02 -0700)]
Add missing fcvt opcodes through riscv-opcodes

11 years agoclarify vxcptsave/vxctkill semantics
Yunsup Lee [Tue, 22 Oct 2013 01:53:02 +0000 (18:53 -0700)]
clarify vxcptsave/vxctkill semantics

11 years agoimplement vxcptsave/vxcptrestore
Yunsup Lee [Sat, 19 Oct 2013 05:28:23 +0000 (22:28 -0700)]
implement vxcptsave/vxcptrestore

11 years agoclean up SR_EA, the enable accelerator bit in status reg
Yunsup Lee [Sat, 19 Oct 2013 02:22:08 +0000 (19:22 -0700)]
clean up SR_EA, the enable accelerator bit in status reg

11 years agomore hwacha supervisor stuff
Yunsup Lee [Sat, 19 Oct 2013 02:19:00 +0000 (19:19 -0700)]
more hwacha supervisor stuff

11 years agorefactor disassembler, and add hwacha disassembler
Yunsup Lee [Sat, 19 Oct 2013 00:34:54 +0000 (17:34 -0700)]
refactor disassembler, and add hwacha disassembler

11 years agocan't execute frsr/fssr on ut
Yunsup Lee [Fri, 18 Oct 2013 19:04:46 +0000 (12:04 -0700)]
can't execute frsr/fssr on ut