openpower-isa.git
3 years agoget op always using function PowerDecoder.op_get
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 22:32:07 +0000 (23:32 +0100)]
get op always using function PowerDecoder.op_get
need to mux this when doing SVP64 bitrev LD/ST detection

3 years agoadd PowerOp.like function to be able to duplicate a PowerOp
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 22:15:04 +0000 (23:15 +0100)]
add PowerOp.like function to be able to duplicate a PowerOp

3 years agoadd SVP64 alternative LDST decoder (unused so far)
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 21:57:30 +0000 (22:57 +0100)]
add SVP64 alternative LDST decoder (unused so far)

3 years agoonly add SVP64 bitreverse mode for LDs at the moment. ST would need 4 operands
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 21:42:37 +0000 (22:42 +0100)]
only add SVP64 bitreverse mode for LDs at the moment. ST would need 4 operands
add RC to PowerDecoder
add create_decode_svp64
sort out Forms and Const names in enums

3 years agoadd SVP64 LD/ST "bitrev" alternative CSV
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 20:17:47 +0000 (21:17 +0100)]
add SVP64 LD/ST "bitrev" alternative CSV

3 years agoadd sv bitrev "major" CSV table
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 20:12:48 +0000 (21:12 +0100)]
add sv bitrev "major" CSV table

3 years agoadd start of bit-reverse mode for LD/ST to SVP64 encode/decode
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 17:57:22 +0000 (18:57 +0100)]
add start of bit-reverse mode for LD/ST to SVP64 encode/decode

3 years agolooks like spec error on maddhd etc. should be a comma rather than fullstop
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 16:31:55 +0000 (17:31 +0100)]
looks like spec error on maddhd etc. should be a comma rather than fullstop

3 years agoadd mul-add to list of instructions
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 16:28:34 +0000 (17:28 +0100)]
add mul-add to list of instructions

3 years agoadd ASCII art example to int predicated SVP64
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 16:21:05 +0000 (17:21 +0100)]
add ASCII art example to int predicated SVP64

3 years agoadd VL and srcstep to ISACaller namespace
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 15:33:32 +0000 (16:33 +0100)]
add VL and srcstep to ISACaller namespace

3 years agoadd SHL64 helper function
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 15:29:54 +0000 (16:29 +0100)]
add SHL64 helper function

3 years agoadd bitrev to pywriter autogenerator
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 15:26:02 +0000 (16:26 +0100)]
add bitrev to pywriter autogenerator

3 years agoadd bitrev function to be used in LD-ST-bitrev FFT/DCT
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 15:23:56 +0000 (16:23 +0100)]
add bitrev function to be used in LD-ST-bitrev FFT/DCT

3 years agobetter ways to do sign-inversion (without multiply which rounds)
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 15:07:12 +0000 (16:07 +0100)]
better ways to do sign-inversion (without multiply which rounds)
also fix FP unit tests

3 years agoadd sign-inversion argument to FPMUL/DIV helpers
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 14:46:02 +0000 (15:46 +0100)]
add sign-inversion argument to FPMUL/DIV helpers

3 years agoadd comments for SVP64 FP FFT/DCT
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 13:48:31 +0000 (14:48 +0100)]
add comments for SVP64 FP FFT/DCT

3 years agoadd FFT/DCT to titles
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 13:44:24 +0000 (14:44 +0100)]
add FFT/DCT to titles

3 years agoadd SV FP arithmetic in "Overflow" mode for FFT/DCT +/-
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 13:42:40 +0000 (14:42 +0100)]
add SV FP arithmetic in "Overflow" mode for FFT/DCT +/-

3 years agouse SHL64 function for shift because "<<" operator doesnt exist in
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 11:26:37 +0000 (12:26 +0100)]
use SHL64 function for shift because "<<" operator doesnt exist in
v3.0B pseudocode syntax

3 years agoadd in bitreverse function call into svfixedload
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 11:19:04 +0000 (12:19 +0100)]
add in bitreverse function call into svfixedload

3 years agoadd RC and SVD/SVDS-Form to svfixedload
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 11:06:33 +0000 (12:06 +0100)]
add RC and SVD/SVDS-Form to svfixedload

3 years agoadd svfixedload.mdwn at correct place
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 11:04:53 +0000 (12:04 +0100)]
add svfixedload.mdwn at correct place

3 years agoadd SVD-Form and SVDS-Form, variants of fixedload for SVP64
Luke Kenneth Casson Leighton [Wed, 23 Jun 2021 11:04:06 +0000 (12:04 +0100)]
add SVD-Form and SVDS-Form, variants of fixedload for SVP64

3 years ago128 regs added to simulator - works
Luke Kenneth Casson Leighton [Sat, 19 Jun 2021 19:41:14 +0000 (20:41 +0100)]
128 regs added to simulator - works

3 years agosigh cannot add comments at end of SV lines in SVP64 asm yet
Luke Kenneth Casson Leighton [Sat, 19 Jun 2021 19:40:13 +0000 (20:40 +0100)]
sigh cannot add comments at end of SV lines in SVP64 asm yet

3 years agoincrease number of registers to 128 in pypowersim
Luke Kenneth Casson Leighton [Sat, 19 Jun 2021 18:57:36 +0000 (19:57 +0100)]
increase number of registers to 128 in pypowersim

3 years agoset regfile in ISACaller equal to length of initial variables
Luke Kenneth Casson Leighton [Sat, 19 Jun 2021 18:53:50 +0000 (19:53 +0100)]
set regfile in ISACaller equal to length of initial variables

3 years agoadd mapreduce "reverse gear" unit tests
Luke Kenneth Casson Leighton [Sat, 19 Jun 2021 12:52:42 +0000 (13:52 +0100)]
add mapreduce "reverse gear" unit tests
add svp64 assembly mode "/mrr" - mapreduce reverse
add non-reverse mapreduce unit test as well (pascal triangle)

3 years agoadd mapreduce "reverse gear" to PowerDecoder2. gets the reg num to
Luke Kenneth Casson Leighton [Sat, 19 Jun 2021 12:13:33 +0000 (13:13 +0100)]
add mapreduce "reverse gear" to PowerDecoder2. gets the reg num to
swap direction instead of 0..VL-1 it is VL-1..0

3 years agoadd decode of "reverse gear" in SVP64 reduce mode
Luke Kenneth Casson Leighton [Sat, 19 Jun 2021 12:02:03 +0000 (13:02 +0100)]
add decode of "reverse gear" in SVP64 reduce mode

3 years agoadd "reverse-gear" mode to mapreduce in SVP64
Luke Kenneth Casson Leighton [Sat, 19 Jun 2021 11:47:56 +0000 (12:47 +0100)]
add "reverse-gear" mode to mapreduce in SVP64

3 years agoadd SV Context SPRs (SVCTX0-7)
Luke Kenneth Casson Leighton [Fri, 18 Jun 2021 12:16:13 +0000 (13:16 +0100)]
add SV Context SPRs (SVCTX0-7)

3 years agoadd SVR-Form and associated fields
Luke Kenneth Casson Leighton [Fri, 18 Jun 2021 11:57:59 +0000 (12:57 +0100)]
add SVR-Form and associated fields

3 years agoadd four SVSHAPE SPRs for REMAP
Luke Kenneth Casson Leighton [Fri, 18 Jun 2021 11:27:02 +0000 (12:27 +0100)]
add four SVSHAPE SPRs for REMAP
https://libre-soc.org/openpower/sv/remap/

3 years agoadd SV "Context Propagation" Form
Luke Kenneth Casson Leighton [Thu, 17 Jun 2021 18:57:57 +0000 (19:57 +0100)]
add SV "Context Propagation" Form

3 years agoadd SVP64REMAP Record
Luke Kenneth Casson Leighton [Thu, 17 Jun 2021 18:43:00 +0000 (19:43 +0100)]
add SVP64REMAP Record
https://libre-soc.org/openpower/sv/remap/

3 years agoshuffle comments
Luke Kenneth Casson Leighton [Thu, 17 Jun 2021 14:47:19 +0000 (15:47 +0100)]
shuffle comments

3 years agofix MP3 CODEC basic demo by using fmuls and fadds/fsubs not fmadds
Luke Kenneth Casson Leighton [Thu, 17 Jun 2021 10:30:44 +0000 (11:30 +0100)]
fix MP3 CODEC basic demo by using fmuls and fadds/fsubs not fmadds
now accurate to scalar version

3 years agosorted out order of FPMULADD32 helper, only have rounding errors now
Luke Kenneth Casson Leighton [Wed, 16 Jun 2021 19:29:54 +0000 (20:29 +0100)]
sorted out order of FPMULADD32 helper, only have rounding errors now

3 years agoadd extra comments to mp3 svp64 codec assembler
Luke Kenneth Casson Leighton [Wed, 16 Jun 2021 19:27:40 +0000 (20:27 +0100)]
add extra comments to mp3 svp64 codec assembler

3 years agofix fmadds/fmsubs FPMULADD32 helper
Luke Kenneth Casson Leighton [Wed, 16 Jun 2021 18:58:37 +0000 (19:58 +0100)]
fix fmadds/fmsubs FPMULADD32 helper

3 years agomore code-comments in mp3 codec svp64 example
Luke Kenneth Casson Leighton [Wed, 16 Jun 2021 18:41:59 +0000 (19:41 +0100)]
more code-comments in mp3 codec svp64 example

3 years agoalthough unused read first sum from *dither_state
Luke Kenneth Casson Leighton [Wed, 16 Jun 2021 16:59:11 +0000 (17:59 +0100)]
although unused read first sum from *dither_state

3 years agouse addi where sv.addi is inappropriate (scalar values)
Luke Kenneth Casson Leighton [Wed, 16 Jun 2021 16:47:49 +0000 (17:47 +0100)]
use addi where sv.addi is inappropriate (scalar values)
although later win and win2 will move to above 32.
looking for possible discrepancies in assembler code

3 years agoreorder arguments to FPMULADD32 to match pseudocode
Luke Kenneth Casson Leighton [Wed, 16 Jun 2021 16:20:51 +0000 (17:20 +0100)]
reorder arguments to FPMULADD32 to match pseudocode

3 years agouse fnmsubs instead of fmadds followed by fsubs
Luke Kenneth Casson Leighton [Wed, 16 Jun 2021 12:14:48 +0000 (13:14 +0100)]
use fnmsubs instead of fmadds followed by fsubs

3 years agofnmadds and fnmsubs were inverted
Luke Kenneth Casson Leighton [Wed, 16 Jun 2021 12:14:07 +0000 (13:14 +0100)]
fnmadds and fnmsubs were inverted

3 years agoad fnmadd and fnmsubs to ISA pseudocode
Luke Kenneth Casson Leighton [Wed, 16 Jun 2021 12:07:34 +0000 (13:07 +0100)]
ad fnmadd and fnmsubs to ISA pseudocode

3 years agoreverting removal of tmpsum and tmpsum2, not using fmsubs
Luke Kenneth Casson Leighton [Wed, 16 Jun 2021 10:24:48 +0000 (11:24 +0100)]
reverting removal of tmpsum and tmpsum2, not using fmsubs
see http://lists.libre-soc.org/pipermail/libre-soc-dev/2021-June/003145.html

3 years agowhoops forgot import
Luke Kenneth Casson Leighton [Tue, 15 Jun 2021 19:22:50 +0000 (20:22 +0100)]
whoops forgot import

3 years agowhoops still using DOUBLE(SINGLE(x)) rather than DOUBLE2SINGLE
Luke Kenneth Casson Leighton [Tue, 15 Jun 2021 19:21:58 +0000 (20:21 +0100)]
whoops still using DOUBLE(SINGLE(x)) rather than DOUBLE2SINGLE

3 years agoremove predicate mask r30, no longer needed
Luke Kenneth Casson Leighton [Tue, 15 Jun 2021 18:14:03 +0000 (19:14 +0100)]
remove predicate mask r30, no longer needed

3 years agono need for tmpsu or tmpsum2, fmadds if replaced with fmsubs does the job
Luke Kenneth Casson Leighton [Tue, 15 Jun 2021 17:58:50 +0000 (18:58 +0100)]
no need for tmpsu or tmpsum2, fmadds if replaced with fmsubs does the job

3 years agouse new sv.fmadds SVP64 instruction in MP3 CODEC assembler
Luke Kenneth Casson Leighton [Tue, 15 Jun 2021 17:43:50 +0000 (18:43 +0100)]
use new sv.fmadds SVP64 instruction in MP3 CODEC assembler

3 years agofix sv_analysis.py for 3R-1W-CRo case, add fmadds/fmsubs and SVP64 tests
Luke Kenneth Casson Leighton [Tue, 15 Jun 2021 17:43:18 +0000 (18:43 +0100)]
fix sv_analysis.py for 3R-1W-CRo case, add fmadds/fmsubs and SVP64 tests

3 years agomark as possible bug, the fneg sum,sum
Luke Kenneth Casson Leighton [Tue, 15 Jun 2021 15:47:45 +0000 (16:47 +0100)]
mark as possible bug, the fneg sum,sum

3 years agoadd fmadds and fmsubs to Power ISA pseudo-code, add unit test (scalar)
Luke Kenneth Casson Leighton [Tue, 15 Jun 2021 15:36:59 +0000 (16:36 +0100)]
add fmadds and fmsubs to Power ISA pseudo-code, add unit test (scalar)

3 years agoremove negate of sum for last value in SVP64 MP3 CODEC assembler
Luke Kenneth Casson Leighton [Tue, 15 Jun 2021 15:01:29 +0000 (16:01 +0100)]
remove negate of sum for last value in SVP64 MP3 CODEC assembler

3 years agoSVP64 mp3 assembler almost correct
Luke Kenneth Casson Leighton [Tue, 15 Jun 2021 14:53:41 +0000 (15:53 +0100)]
SVP64 mp3 assembler almost correct
lkcl@fizzy:~/src/libresoc/openpower-isa/media$ diff -u /tmp/x1 /tmp/x2
--- /tmp/x1     2021-06-15 15:51:06.016530558 +0100
+++ /tmp/x2     2021-06-15 15:51:16.816549772 +0100
@@ -2,7 +2,7 @@
 00000010  91 38 c2 aa b0 65 00 2a  ec 4d ea 2a c6 99 f3 ab  |.8...e.*.M.*....|
 00000020  5e 86 5c 2b c7 79 ce aa  05 b1 30 ab c2 b7 35 2c  |^.\+.y....0...5,|
 00000030  b2 48 35 ab 00 d8 91 2b  26 7e 6c 2b 52 c9 ac ac  |.H5....+&~l+R...|
-00000040  00 00 00 00 fc 57 cf 2c  61 ee ce ab 00 3a ff ab  |.....W.,a....:..|
+00000040  00 00 00 80 fc 57 cf 2c  61 ee ce ab 00 3a ff ab  |.....W.,a....:..|
 00000050  42 b6 f1 2b d2 49 08 ad  46 dd 5c 2c b9 f3 0d 2c  |B..+.I..F.\,...,|
 00000060  2c 2d b3 ac 8d 26 55 2d  ec 4d ea ac 0b 6c 08 ac  |,-...&U-.M...l..|
 00000070  2c a3 e6 2c 52 97 db ac  a8 7c 03 2d 1d b3 58 ac  |,..,R....|.-..X.|

3 years agoadd comments into mapreduce example
Luke Kenneth Casson Leighton [Tue, 15 Jun 2021 14:32:15 +0000 (15:32 +0100)]
add comments into mapreduce example

3 years agowhoops overlap of fv0-2 with sum/2/tmp, move further up
Luke Kenneth Casson Leighton [Tue, 15 Jun 2021 10:09:03 +0000 (11:09 +0100)]
whoops overlap of fv0-2 with sum/2/tmp, move further up

3 years agosigh bug in setvl, temporarily setting to 7 not 8
Luke Kenneth Casson Leighton [Mon, 14 Jun 2021 23:53:54 +0000 (00:53 +0100)]
sigh bug in setvl, temporarily setting to 7 not 8

3 years agonope, win = win2 + 31
Luke Kenneth Casson Leighton [Mon, 14 Jun 2021 23:40:21 +0000 (00:40 +0100)]
nope, win = win2 + 31

3 years agoguessing probably supposed to be 128 not 124
Luke Kenneth Casson Leighton [Mon, 14 Jun 2021 23:39:31 +0000 (00:39 +0100)]
guessing probably supposed to be 128 not 124

3 years agotmpsum2 probably needed to be fp3
Luke Kenneth Casson Leighton [Mon, 14 Jun 2021 23:37:09 +0000 (00:37 +0100)]
tmpsum2 probably needed to be fp3

3 years agotemporary move regs into range 0-31
Luke Kenneth Casson Leighton [Mon, 14 Jun 2021 22:00:24 +0000 (23:00 +0100)]
temporary move regs into range 0-31

3 years agorecognise setvl instruction during SVP64 translation
Luke Kenneth Casson Leighton [Mon, 14 Jun 2021 22:00:06 +0000 (23:00 +0100)]
recognise setvl instruction during SVP64 translation

3 years agowhoops forgot format-to-format conversion
Luke Kenneth Casson Leighton [Mon, 14 Jun 2021 21:49:59 +0000 (22:49 +0100)]
whoops forgot format-to-format conversion

3 years agoseries of text macro formats to look for: x.v, x.s (x)
Luke Kenneth Casson Leighton [Mon, 14 Jun 2021 21:46:57 +0000 (22:46 +0100)]
series of text macro formats to look for: x.v, x.s (x)

3 years agoadd basic "macro" (.set) support to SVP64Asm
Luke Kenneth Casson Leighton [Mon, 14 Jun 2021 21:36:16 +0000 (22:36 +0100)]
add basic "macro" (.set) support to SVP64Asm
also fix bug where immediate fields were not being translated

3 years agomp3_0 initial sv
Lauri Kasanen [Mon, 14 Jun 2021 12:25:12 +0000 (15:25 +0300)]
mp3_0 initial sv

3 years agoReorder mp3_0_basicsv back to the C loop style
Lauri Kasanen [Mon, 14 Jun 2021 11:53:40 +0000 (14:53 +0300)]
Reorder mp3_0_basicsv back to the C loop style

3 years agoUpdate mp3_1.gpr missed in b04990f79c
Lauri Kasanen [Mon, 14 Jun 2021 11:20:56 +0000 (14:20 +0300)]
Update mp3_1.gpr missed in b04990f79c

3 years agoadd some more comments in the mapreduce svp64 examples/unit tests
Luke Kenneth Casson Leighton [Wed, 9 Jun 2021 20:33:16 +0000 (21:33 +0100)]
add some more comments in the mapreduce svp64 examples/unit tests

3 years agoadd sv.fmuls/mr - mapreduce - FP multiply-single test
Luke Kenneth Casson Leighton [Wed, 9 Jun 2021 17:31:25 +0000 (18:31 +0100)]
add sv.fmuls/mr - mapreduce - FP multiply-single test

3 years agoadd first scalar mapreduce SVP64 example
Luke Kenneth Casson Leighton [Wed, 9 Jun 2021 17:19:40 +0000 (18:19 +0100)]
add first scalar mapreduce SVP64 example

3 years agoadd what might turn out to be only what is needed to support mapreduce
Luke Kenneth Casson Leighton [Wed, 9 Jun 2021 17:05:05 +0000 (18:05 +0100)]
add what might turn out to be only what is needed to support mapreduce
scalar mode

3 years agowhoops, carry-over during rounding picks MSB not LSB
Luke Kenneth Casson Leighton [Tue, 8 Jun 2021 16:33:16 +0000 (17:33 +0100)]
whoops, carry-over during rounding picks MSB not LSB

3 years agowhoops copy sign over on zero
Luke Kenneth Casson Leighton [Tue, 8 Jun 2021 16:13:45 +0000 (17:13 +0100)]
whoops copy sign over on zero

3 years agoexponent bitwidth in DOUBLE2SINGLE needs to be 11 bits not 12
Luke Kenneth Casson Leighton [Tue, 8 Jun 2021 12:54:18 +0000 (13:54 +0100)]
exponent bitwidth in DOUBLE2SINGLE needs to be 11 bits not 12

3 years agouse new auto-generated DOUBLE2SINGLE from isafunctions pseudocode in FPMUL32
Luke Kenneth Casson Leighton [Tue, 8 Jun 2021 12:12:40 +0000 (13:12 +0100)]
use new auto-generated DOUBLE2SINGLE from isafunctions pseudocode in FPMUL32

3 years agoadd detection of function parameters in parser
Luke Kenneth Casson Leighton [Tue, 8 Jun 2021 12:11:18 +0000 (13:11 +0100)]
add detection of function parameters in parser
and stop assuming they are uninitialised variables (auto-assigned)
when slices are used

3 years agoadd better debug logs and asserts for SelectableInt slice
Luke Kenneth Casson Leighton [Tue, 8 Jun 2021 12:09:01 +0000 (13:09 +0100)]
add better debug logs and asserts for SelectableInt slice

3 years agoadd support in pyparser for negative numbers
Luke Kenneth Casson Leighton [Tue, 8 Jun 2021 12:08:18 +0000 (13:08 +0100)]
add support in pyparser for negative numbers

3 years agowhoops fraction in fpfromint off-by-one
Luke Kenneth Casson Leighton [Mon, 7 Jun 2021 12:24:03 +0000 (13:24 +0100)]
whoops fraction in fpfromint off-by-one

3 years agowhoops, in1_isvec and dec_bi are optional
Luke Kenneth Casson Leighton [Thu, 3 Jun 2021 12:02:34 +0000 (13:02 +0100)]
whoops, in1_isvec and dec_bi are optional

3 years agofmuls test showing rounding error against qemu
Luke Kenneth Casson Leighton [Wed, 2 Jun 2021 20:43:30 +0000 (21:43 +0100)]
fmuls test showing rounding error against qemu

3 years agofound FP single-conversion error, from the pseudocode, incorrectly
Luke Kenneth Casson Leighton [Wed, 2 Jun 2021 13:34:52 +0000 (14:34 +0100)]
found FP single-conversion error, from the pseudocode, incorrectly
translated to python by hand.  really should replace it with actual
pseudocode

3 years agomove mp3 test params slightly higher up so as not to clash with qemu BIOS
Luke Kenneth Casson Leighton [Wed, 2 Jun 2021 12:35:55 +0000 (13:35 +0100)]
move mp3 test params slightly higher up so as not to clash with qemu BIOS

3 years agoadd commented-out debug prints
Luke Kenneth Casson Leighton [Wed, 2 Jun 2021 12:33:31 +0000 (13:33 +0100)]
add commented-out debug prints

3 years agowhoops sorting SPRs, stop that for now
Luke Kenneth Casson Leighton [Wed, 2 Jun 2021 12:33:17 +0000 (13:33 +0100)]
whoops sorting SPRs, stop that for now

3 years agoget qemu FP regs correctly
Luke Kenneth Casson Leighton [Wed, 2 Jun 2021 12:32:51 +0000 (13:32 +0100)]
get qemu FP regs correctly

3 years agoFP basic qemu sim, testing fadds loads and stores
Luke Kenneth Casson Leighton [Wed, 2 Jun 2021 12:31:29 +0000 (13:31 +0100)]
FP basic qemu sim, testing fadds loads and stores

3 years agoappears that the FP operation takes place at full 64-bit precision
Luke Kenneth Casson Leighton [Wed, 2 Jun 2021 12:23:44 +0000 (13:23 +0100)]
appears that the FP operation takes place at full 64-bit precision
then is truncated afterwards to 32-bit, then converted to fit into 64

3 years agowhoops missing argument
Luke Kenneth Casson Leighton [Tue, 1 Jun 2021 13:42:39 +0000 (14:42 +0100)]
whoops missing argument

3 years agomove spot-check mem compare to a function
Luke Kenneth Casson Leighton [Tue, 1 Jun 2021 13:41:15 +0000 (14:41 +0100)]
move spot-check mem compare to a function
use for further debugging by checking a corrupted address

3 years agocheck both LD and ST in qemu compare
Luke Kenneth Casson Leighton [Tue, 1 Jun 2021 13:32:43 +0000 (14:32 +0100)]
check both LD and ST in qemu compare

3 years agobizarre, GPR 3 is set by qemu to non-zero at startup.
Luke Kenneth Casson Leighton [Tue, 1 Jun 2021 13:21:13 +0000 (14:21 +0100)]
bizarre, GPR 3 is set by qemu to non-zero at startup.
clear all GPRs: set to zero

3 years agowhoops start basic sim from 0x20000000
Luke Kenneth Casson Leighton [Tue, 1 Jun 2021 13:16:41 +0000 (14:16 +0100)]
whoops start basic sim from 0x20000000