riscv-isa-sim.git
6 years agouse sv_insn_t class in instruction template
Luke Kenneth Casson Leighton [Tue, 25 Sep 2018 04:34:30 +0000 (05:34 +0100)]
use sv_insn_t class in instruction template

6 years agoadd sv_insn_t class (inherits from insn_t)
Luke Kenneth Casson Leighton [Tue, 25 Sep 2018 01:45:26 +0000 (02:45 +0100)]
add sv_insn_t class (inherits from insn_t)

6 years agoargh cant virtualise rd/rs1-3, due to union usage with rocc_insn_union_t
Luke Kenneth Casson Leighton [Tue, 25 Sep 2018 01:34:29 +0000 (02:34 +0100)]
argh cant virtualise rd/rs1-3, due to union usage with rocc_insn_union_t

6 years agosv: rd, rs1/2/3 become virtual so that sv_insn_t can override them
Luke Kenneth Casson Leighton [Tue, 25 Sep 2018 01:28:41 +0000 (02:28 +0100)]
sv: rd, rs1/2/3 become virtual so that sv_insn_t can override them

6 years agoclarify sv cam table
Luke Kenneth Casson Leighton [Tue, 25 Sep 2018 01:17:49 +0000 (02:17 +0100)]
clarify sv cam table

6 years agodefine CSR and register tables for SV
Luke Kenneth Casson Leighton [Mon, 24 Sep 2018 06:42:27 +0000 (07:42 +0100)]
define CSR and register tables for SV

6 years agoremove unneeded use of AM_CONDITIONAL
Luke Kenneth Casson Leighton [Mon, 24 Sep 2018 06:24:11 +0000 (07:24 +0100)]
remove unneeded use of AM_CONDITIONAL

6 years agoadd #define for SPIKE_SIMPLEV, re-run autoreconf
Luke Kenneth Casson Leighton [Mon, 24 Sep 2018 06:18:50 +0000 (07:18 +0100)]
add #define for SPIKE_SIMPLEV, re-run autoreconf

6 years agocreate #defines from identified registers, per opcode
Luke Kenneth Casson Leighton [Mon, 24 Sep 2018 02:56:21 +0000 (03:56 +0100)]
create #defines from identified registers, per opcode

6 years agoclarify docstring on id_regs.py
Luke Kenneth Casson Leighton [Mon, 24 Sep 2018 02:04:18 +0000 (03:04 +0100)]
clarify docstring on id_regs.py

6 years agoadd function identifying the registers in each emulated instruction
Luke Kenneth Casson Leighton [Mon, 24 Sep 2018 02:03:58 +0000 (03:03 +0100)]
add function identifying the registers in each emulated instruction

6 years agoidentify instructions, plan: extract registers
Luke Kenneth Casson Leighton [Mon, 24 Sep 2018 01:53:14 +0000 (02:53 +0100)]
identify instructions, plan: extract registers

6 years agoUpdate README master
Andrew Waterman [Thu, 13 Sep 2018 06:56:49 +0000 (23:56 -0700)]
Update README

6 years agoMerge pull request #235 from riscv/sba
Tim Newsome [Thu, 6 Sep 2018 19:04:52 +0000 (12:04 -0700)]
Merge pull request #235 from riscv/sba

Fix cut-and-paste bug in 64-bit SBA loads.

6 years agoFix cut-and-paste bug in 64-bit SBA loads.
Tim Newsome [Wed, 5 Sep 2018 20:27:58 +0000 (13:27 -0700)]
Fix cut-and-paste bug in 64-bit SBA loads.

Fixes #234.

6 years agoHandle spike-dasm inputs with leading 0x correctly
Andrew Waterman [Fri, 24 Aug 2018 19:15:03 +0000 (12:15 -0700)]
Handle spike-dasm inputs with leading 0x correctly

6 years agoAdd dummy custom debug registers, to test OpenOCD. (#233)
Tim Newsome [Fri, 24 Aug 2018 03:36:41 +0000 (20:36 -0700)]
Add dummy custom debug registers, to test OpenOCD. (#233)

6 years agoFix several disassembler bugs
Andrew Waterman [Fri, 24 Aug 2018 00:17:17 +0000 (17:17 -0700)]
Fix several disassembler bugs

h/t Shane Lardinois

6 years agoAdd --disable-dtb option to suppress writing the DTB to memory
Andrew Waterman [Thu, 23 Aug 2018 23:54:36 +0000 (16:54 -0700)]
Add --disable-dtb option to suppress writing the DTB to memory

6 years agoMake IRQ_COP read-only/undelegable unless coprocessor is present
Andrew Waterman [Wed, 22 Aug 2018 21:07:45 +0000 (14:07 -0700)]
Make IRQ_COP read-only/undelegable unless coprocessor is present

6 years agoInstantiate disassembler after max_xlen is known
Andrew Waterman [Tue, 21 Aug 2018 21:24:23 +0000 (14:24 -0700)]
Instantiate disassembler after max_xlen is known

This fixes RVC disassembly.

It's done in a way that doesn't break 2cd60b277e909a5599ca48e4561cbfbc61460186

6 years agoDon't increment instret immediately after it is written (#231)
Andrew Waterman [Sat, 18 Aug 2018 01:49:47 +0000 (18:49 -0700)]
Don't increment instret immediately after it is written (#231)

This brings Spike into compliance with this clause in the spec:
https://github.com/riscv/riscv-isa-manual/blob/master/src/csr.tex#L96

6 years agoFix 2 trigger corner cases. (#229)
Tim Newsome [Fri, 10 Aug 2018 21:55:28 +0000 (14:55 -0700)]
Fix 2 trigger corner cases. (#229)

1. When hitting a trigger during a single step, dcsr.cause must reflect
the trigger not the step.
2. Also check for triggers on accesses that require a slow path fetch.

6 years agoMake sstatus.MXR readable
Andrew Waterman [Tue, 31 Jul 2018 18:26:47 +0000 (11:26 -0700)]
Make sstatus.MXR readable

h/t @taoliug

6 years agoFix using the uninitialized disassemble object. (#220)
SeungRyeol Lee [Mon, 23 Jul 2018 20:14:05 +0000 (05:14 +0900)]
Fix using the uninitialized disassemble object. (#220)

This fixes runtime crash when custom extension registers its
disassembly.

6 years agoRefactor and fix LR/SC implementation (#217)
Andrew Waterman [Tue, 10 Jul 2018 16:56:32 +0000 (09:56 -0700)]
Refactor and fix LR/SC implementation (#217)

- Use physical addresses to avoid homonym ambiguity (closes #215)

- Yield reservation on store-conditional (https://github.com/riscv/riscv-isa-manual/commit/03a5e722fc0fe7b94dd0a49f550ff7b41a63f612)

- Don't yield reservation on exceptions (it's no longer required).

6 years agoMerge pull request #212 from riscv/hartsel
Tim Newsome [Tue, 12 Jun 2018 00:45:07 +0000 (17:45 -0700)]
Merge pull request #212 from riscv/hartsel

Update debug_defines.h

6 years agoUpdate debug_defines.h
Tim Newsome [Mon, 11 Jun 2018 20:36:30 +0000 (13:36 -0700)]
Update debug_defines.h

Add support for hartselhi parsing, but other parts of the debug code
still don't support more than 1024 harts.

6 years agoPut simif_t declaration in its own file. (#209)
Andy Wright [Thu, 31 May 2018 17:53:12 +0000 (13:53 -0400)]
Put simif_t declaration in its own file. (#209)

By separating the simif_t declaration from the sim_t declaration, the
simif_t declaration no longer depends on fesvr header files. This
simplifies compilation of custom sim class implementations that don't
depend on fesvr.

6 years agoFix install of missed header. (#207)
Prashanth Mundkur [Fri, 18 May 2018 20:45:35 +0000 (13:45 -0700)]
Fix install of missed header. (#207)

6 years agoExtract out device-tree generation and compilation into an exported api. (#197)
Prashanth Mundkur [Fri, 18 May 2018 20:38:57 +0000 (13:38 -0700)]
Extract out device-tree generation and compilation into an exported api. (#197)

6 years agoRevert "C.LWSP and C.LDSP with rd=0 are legal instructions"
Andrew Waterman [Fri, 4 May 2018 19:05:33 +0000 (12:05 -0700)]
Revert "C.LWSP and C.LDSP with rd=0 are legal instructions"

See https://github.com/riscv/riscv-isa-manual/commit/01190b6ebeb29cfac6783a3e7ce30cd529bf6c59

6 years agoC.LWSP and C.LDSP with rd=0 are legal instructions
Andrew Waterman [Fri, 4 May 2018 00:14:28 +0000 (17:14 -0700)]
C.LWSP and C.LDSP with rd=0 are legal instructions

This mistake derives from an ambiguity in the specification that has since been corrected: https://github.com/riscv/riscv-isa-manual/commit/272d038abebe7f006ed7960b522f1e51890bb982

6 years agoFix commit log for serializing instructions
Andrew Waterman [Tue, 1 May 2018 03:20:43 +0000 (20:20 -0700)]
Fix commit log for serializing instructions

Resolves #199

6 years agoOnly break out of the simulator loop on WFI, not on CSR writes
Andrew Waterman [Mon, 30 Apr 2018 22:06:52 +0000 (15:06 -0700)]
Only break out of the simulator loop on WFI, not on CSR writes

Breaking out of the loop on WFI was intended to let other threads run
when the current thread has no work to do.  There's no advantage to doing
so on CSR writes, and the unintentional change in thread interleaving
broke some test programs that relied on short timer periods.

6 years agoWhen no arguments are passed, print spike help, not fesvr help
Andrew Waterman [Sun, 29 Apr 2018 07:41:42 +0000 (00:41 -0700)]
When no arguments are passed, print spike help, not fesvr help

6 years agoAllow querying the mmu configuration chosen during the build. (#191)
Prashanth Mundkur [Thu, 5 Apr 2018 00:25:01 +0000 (17:25 -0700)]
Allow querying the mmu configuration chosen during the build. (#191)

6 years agoRevert "Fix for issue #183: No illegal instruction exception for c.sxxi instructions...
Andrew Waterman [Wed, 4 Apr 2018 20:00:29 +0000 (13:00 -0700)]
Revert "Fix for issue #183: No illegal instruction exception for c.sxxi instructions encoded with zero shift amount"

This reverts commit be0555d585b332fd0496affe559c0a5a4e7e5644.

See #190

6 years agoMerge pull request #189 from pmundkur/pm-csr-name-api
Palmer Dabbelt [Fri, 30 Mar 2018 16:59:06 +0000 (09:59 -0700)]
Merge pull request #189 from pmundkur/pm-csr-name-api

Add an api to get the name for a CSR.

6 years agoAdd an api to get the name for a CSR.
Prashanth Mundkur [Mon, 26 Mar 2018 19:07:03 +0000 (12:07 -0700)]
Add an api to get the name for a CSR.

6 years agoImplement Hauser misa.C misalignment proposal (#187)
Andrew Waterman [Thu, 22 Mar 2018 00:19:16 +0000 (17:19 -0700)]
Implement Hauser misa.C misalignment proposal (#187)

See https://github.com/riscv/riscv-isa-manual/commit/0472bcdd166f45712492829a250e228bb45fa5e7

- Reads of xEPC[1] are masked when RVC is disabled
- Writes to MISA are suppressed if they would cause a misaligned fetch
- Misaligned PCs no longer need to be checked upon fetch

6 years agoFix the access exception during page-table walks to match the original access type...
Prashanth Mundkur [Wed, 21 Mar 2018 20:24:51 +0000 (13:24 -0700)]
Fix the access exception during page-table walks to match the original access type, as specified in the manual. (#185)

6 years agoFix spike-dasm. (#184)
Tim Newsome [Mon, 19 Mar 2018 20:10:06 +0000 (13:10 -0700)]
Fix spike-dasm. (#184)

It had been broken by 90bafe660b323250338fd564bb9ab4316576d59b.

6 years agoMerge pull request #182 from riscv/reset_bits
Tim Newsome [Mon, 19 Mar 2018 16:35:55 +0000 (09:35 -0700)]
Merge pull request #182 from riscv/reset_bits

Implement debug havereset bits

6 years agoImplement debug havereset bits
Tim Newsome [Fri, 16 Mar 2018 21:52:09 +0000 (14:52 -0700)]
Implement debug havereset bits

6 years agoMerge branch 'deepsrc-b_fix_issue183'
Andrew Waterman [Fri, 16 Mar 2018 17:08:47 +0000 (10:08 -0700)]
Merge branch 'deepsrc-b_fix_issue183'

6 years agoFix for issue #183: No illegal instruction exception for c.sxxi instructions encoded...
Shubhodeep Roy Choudhury [Fri, 16 Mar 2018 08:16:20 +0000 (13:46 +0530)]
Fix for issue #183: No illegal instruction exception for c.sxxi instructions encoded with zero shift amount

6 years agoFix a bug caused by moving misa into state_t. (#180)
Prashanth Mundkur [Wed, 14 Mar 2018 16:48:11 +0000 (09:48 -0700)]
Fix a bug caused by moving misa into state_t. (#180)

* Fix misa losing its value in processor constructor due to state:reset() following state.misa initialization.
Make state:reset() preserve misa.

* Set state.misa to max_isa on reset().

* Idiomatic fix for earlier commit.

6 years agoMove processor.isa to state.misa, since it really belongs there.
Prashanth Mundkur [Tue, 13 Mar 2018 23:32:41 +0000 (16:32 -0700)]
Move processor.isa to state.misa, since it really belongs there.

6 years agoFix single stepping csrrw instructions (#178)
Tim Newsome [Sat, 10 Mar 2018 01:54:07 +0000 (17:54 -0800)]
Fix single stepping csrrw instructions (#178)

This code is still a bit voodoo to me, but now we pass all the tests
again. (Stepping was broken by
4299874ad4b07ef457776513a64e5b2397a6a75e.)

6 years agoMerge pull request #177 from riscv/debug_auth
Tim Newsome [Thu, 8 Mar 2018 01:17:39 +0000 (17:17 -0800)]
Merge pull request #177 from riscv/debug_auth

Add debug module authentication.

6 years agoNarrow the interface used by the processors and memory to the top-level simulator...
Prashanth Mundkur [Tue, 20 Feb 2018 23:16:53 +0000 (15:16 -0800)]
Narrow the interface used by the processors and memory to the top-level simulator/htif.
This allows the implementation of an alternative top-level simulator class.

6 years agoFix install of a missed header from debug_rom.
Prashanth Mundkur [Mon, 26 Feb 2018 23:37:01 +0000 (15:37 -0800)]
Fix install of a missed header from debug_rom.

The installed header files from the riscv subproject were incomplete, since
processor.h includes debug_rom_defines.h, and the latter was not installed.
Fix by moving it into riscv/, add it to the riscv subproject header list, which
ensures it will get installed.  While here, also add a missed dependency of debug_rom
on riscv/encoding.h to debug_rom/Makefile.

6 years agoFix a missed header file in the softfloat include install.
Prashanth Mundkur [Mon, 26 Feb 2018 23:21:27 +0000 (15:21 -0800)]
Fix a missed header file in the softfloat include install.

6 years agoImplement clearing-misa.C-while-PC-is-misaligned proposal
Andrew Waterman [Thu, 22 Feb 2018 23:19:26 +0000 (15:19 -0800)]
Implement clearing-misa.C-while-PC-is-misaligned proposal

See https://github.com/riscv/riscv-isa-manual/pull/139

Not adopted yet, but I'm putting the implementation here for reference.

6 years agoEnforce 2-byte alignment of mepc/sepc/dpc
Andrew Waterman [Thu, 22 Feb 2018 00:09:31 +0000 (16:09 -0800)]
Enforce 2-byte alignment of mepc/sepc/dpc

6 years agoMerge pull request #173 from riscv/no_progbuf3
Tim Newsome [Thu, 1 Mar 2018 23:18:01 +0000 (15:18 -0800)]
Merge pull request #173 from riscv/no_progbuf3

Add support for abstract debug access to CSRs and FPRs

6 years agoAdd debug module authentication.
Tim Newsome [Tue, 27 Feb 2018 20:30:46 +0000 (12:30 -0800)]
Add debug module authentication.

Off by default, enabled with --debug-auth.
The protocol is very simple (definitely not secure) to allow debuggers
to test their authentication feature. To authenticate a debugger must:
1. Read authdata
2. Write to authdata the value that it just read, plus 1

6 years agoDon't allow 32-bit instructions to take up multiple slots in I$
Andrew Waterman [Wed, 21 Feb 2018 21:25:44 +0000 (13:25 -0800)]
Don't allow 32-bit instructions to take up multiple slots in I$

I$ indices now maintain a 1:N relationship with PCs.  This is somewhat
faster and also simpler.

6 years agoMerge pull request #171 from riscv/sysbusbits
Tim Newsome [Mon, 19 Feb 2018 19:55:19 +0000 (11:55 -0800)]
Merge pull request #171 from riscv/sysbusbits

Add support for debug bus mastering

6 years agoPasses smoke tests with --progsize=0
Tim Newsome [Tue, 30 Jan 2018 22:13:23 +0000 (14:13 -0800)]
Passes smoke tests with --progsize=0

6 years agoWIP. Doesn't work.
Tim Newsome [Tue, 30 Jan 2018 20:19:55 +0000 (12:19 -0800)]
WIP. Doesn't work.

6 years agoImplement cycleh/instreth CSRs for RV32 (#172)
Andrew Waterman [Tue, 13 Feb 2018 18:43:36 +0000 (10:43 -0800)]
Implement cycleh/instreth CSRs for RV32 (#172)

6 years agoAdd --debug-sba option
Tim Newsome [Thu, 1 Feb 2018 22:32:00 +0000 (14:32 -0800)]
Add --debug-sba option

This lets the user control whether the system bus access implements bus
mastering.

6 years agoUpdate debug_defines
Tim Newsome [Mon, 29 Jan 2018 19:52:31 +0000 (11:52 -0800)]
Update debug_defines

6 years agoSupport debug system bus access.
Tim Newsome [Fri, 12 Jan 2018 23:26:00 +0000 (15:26 -0800)]
Support debug system bus access.

6 years agoUse new debug_defines.h.
Tim Newsome [Tue, 9 Jan 2018 20:29:34 +0000 (12:29 -0800)]
Use new debug_defines.h.

6 years agomem_t: Throw an error if zero-sized memory is requested (#168)
Jonathan Neuschäfer [Tue, 9 Jan 2018 00:00:55 +0000 (01:00 +0100)]
mem_t: Throw an error if zero-sized memory is requested (#168)

* mem_t: Throw an error if zero-sized memory is requested

If for some reason the user requests a memory size of 0 megabytes, print
a useful error message.

* Check for overflow in memory size

If the user passes in a large enough memory size (-m) that the size in
bytes doesn't fit into size_t, catch this error in the make_mems function.

6 years agoAdd some missing RVC instructions to disassembler
Andrew Waterman [Wed, 3 Jan 2018 21:06:21 +0000 (13:06 -0800)]
Add some missing RVC instructions to disassembler

6 years agoMerge pull request #165 from riscv/small_progbuf
Tim Newsome [Mon, 18 Dec 2017 22:25:42 +0000 (14:25 -0800)]
Merge pull request #165 from riscv/small_progbuf

Add support for program buffer of size 2

6 years agoUpdate debug_defines to latest version.
Tim Newsome [Mon, 11 Dec 2017 22:28:10 +0000 (14:28 -0800)]
Update debug_defines to latest version.

6 years agoSet impebreak.
Tim Newsome [Thu, 12 Oct 2017 19:07:11 +0000 (12:07 -0700)]
Set impebreak.

6 years agoUpdate to latest debug_defines.h.
Tim Newsome [Thu, 12 Oct 2017 19:05:26 +0000 (12:05 -0700)]
Update to latest debug_defines.h.

6 years agoMake progbuf a run-time option.
Tim Newsome [Tue, 10 Oct 2017 22:53:23 +0000 (15:53 -0700)]
Make progbuf a run-time option.

Also add an implicit ebreak after the program buffer. This is not part
of the spec, but hopefully it will be.

6 years agoRename badaddr to tval
Andrew Waterman [Mon, 27 Nov 2017 22:29:03 +0000 (14:29 -0800)]
Rename badaddr to tval

6 years agoRename sptbr to satp
Andrew Waterman [Mon, 27 Nov 2017 22:28:29 +0000 (14:28 -0800)]
Rename sptbr to satp

6 years agoSet tval to 0 on traps with no specified tval
Andrew Waterman [Mon, 27 Nov 2017 22:18:06 +0000 (14:18 -0800)]
Set tval to 0 on traps with no specified tval

Simply not writing the register was not a conformant implementation.

6 years agoImplement priv-1.11 interrupt-priority scheme (#161)
Andrew Waterman [Mon, 20 Nov 2017 19:58:14 +0000 (11:58 -0800)]
Implement priv-1.11 interrupt-priority scheme (#161)

Closes #159.

https://github.com/riscv/riscv-isa-manual/commit/a62e76cb16eb508199f74632eb8bf263739f25a3

6 years agoFix commitlog. (#162)
Christopher Celio [Mon, 20 Nov 2017 19:41:31 +0000 (11:41 -0800)]
Fix commitlog. (#162)

A regression caused any instruction with rd=x0 to not be emitted.

6 years agoMerge pull request #156 from p12nGH/noncontiguous_harts
Andrew Waterman [Thu, 16 Nov 2017 00:17:40 +0000 (16:17 -0800)]
Merge pull request #156 from p12nGH/noncontiguous_harts

Support for non-contiguous hartids

6 years agohartids knob description added
Gleb Gagarin [Wed, 15 Nov 2017 23:42:39 +0000 (15:42 -0800)]
hartids knob description added

6 years agoSupport for non-contiguous hartids
Gleb Gagarin [Wed, 15 Nov 2017 23:35:59 +0000 (15:35 -0800)]
Support for non-contiguous hartids

7 years agoRemove redundant U/S mode advertisement
Andrew Waterman [Fri, 10 Nov 2017 03:27:20 +0000 (19:27 -0800)]
Remove redundant U/S mode advertisement

7 years agoH-mode no longer exists
Andrew Waterman [Fri, 10 Nov 2017 02:46:27 +0000 (18:46 -0800)]
H-mode no longer exists

It's supplanted by the hypervisor extension, which doesn't use the privilege
encoding of 2; it still looks like supervisor (i.e. 1).

7 years agoMPP is now WARL
Andrew Waterman [Fri, 10 Nov 2017 02:45:48 +0000 (18:45 -0800)]
MPP is now WARL

7 years agoImplement Q extension for disassembler (#153)
Kito Cheng [Mon, 6 Nov 2017 20:16:50 +0000 (04:16 +0800)]
Implement Q extension for disassembler (#153)

7 years agoFix disassembly of c.li 0
Andrew Waterman [Sat, 4 Nov 2017 01:13:22 +0000 (18:13 -0700)]
Fix disassembly of c.li 0

Resolves #152

7 years agoMerge pull request #151 from riscv/htif_dts
Palmer Dabbelt [Fri, 3 Nov 2017 23:29:57 +0000 (16:29 -0700)]
Merge pull request #151 from riscv/htif_dts

Put HTIF in the device tree

7 years agoPut HTIF in the device tree
Palmer Dabbelt [Fri, 3 Nov 2017 22:38:12 +0000 (15:38 -0700)]
Put HTIF in the device tree

I wanted to actually put the address of the HTIF into the DTS, but that
seems to be a bit too much work: since the HTIF addresses are just
defined in an ELF file it's a bit awkward to make that work.

Instead, I'm just putting a dummy HTIF key in the DTS.

7 years agoMask medeleg correctly
Andrew Waterman [Fri, 3 Nov 2017 02:15:42 +0000 (19:15 -0700)]
Mask medeleg correctly

7 years agoDon't permit delegation of interrupts that M-mode should handle
Andrew Waterman [Thu, 2 Nov 2017 01:57:02 +0000 (18:57 -0700)]
Don't permit delegation of interrupts that M-mode should handle

7 years agoFix commit-log for Q extension, and for RV32 (#143)
Andrew Waterman [Fri, 20 Oct 2017 04:07:22 +0000 (00:07 -0400)]
Fix commit-log for Q extension, and for RV32 (#143)

* Fix commit-log for Q extension, and for RV32

The number of nibbles printed out now depends upon XLEN or FLEN,
as appropriate.

* Factor out FLEN calculation

7 years agoFix bus_t bug with devices at 0x0
Evan Cox [Thu, 19 Oct 2017 16:40:10 +0000 (11:40 -0500)]
Fix bus_t bug with devices at 0x0

Fix a bug that prevented bus_t from storing to, loading from,
or finding a device that existed at address 0x0.

Resolves: #135

7 years agoFix implementation of FMIN/FMAX NaN case
Andrew Waterman [Thu, 19 Oct 2017 19:18:23 +0000 (12:18 -0700)]
Fix implementation of FMIN/FMAX NaN case

If rd=rs1 or rd=rs2, the NaN check examined the wrong value.

7 years agoInclude math.h for NAN (#137)
jar [Sun, 15 Oct 2017 18:22:45 +0000 (14:22 -0400)]
Include math.h for NAN (#137)

commit 85c40db208db3e26f507dc6a74a5dc540b504b5c introduced a NAN dependency but did not include the math.h header

7 years agoMerge pull request #129 from riscv/q-extension
Andrew Waterman [Wed, 11 Oct 2017 01:17:58 +0000 (18:17 -0700)]
Merge pull request #129 from riscv/q-extension

Implement Q extension

7 years agoImplement Q extension
Andrew Waterman [Mon, 25 Sep 2017 03:34:04 +0000 (20:34 -0700)]
Implement Q extension

7 years agoMerge pull request #128 from riscv/reset
Tim Newsome [Mon, 25 Sep 2017 18:05:36 +0000 (11:05 -0700)]
Merge pull request #128 from riscv/reset

Fix debug reset.

7 years agoUpdate SoftFloat
Andrew Waterman [Mon, 25 Sep 2017 03:25:34 +0000 (20:25 -0700)]
Update SoftFloat

7 years agoActually let hartreset be set.
Tim Newsome [Thu, 21 Sep 2017 21:54:06 +0000 (14:54 -0700)]
Actually let hartreset be set.