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Author SHA1 Message Date
Michael Munday
90334d3be9 Add support for function definitions. 2016-12-20 15:49:21 -05:00
Michael Munday
e0e98f94d3 Add support for modulo (%) operations. 
Only the slow path for now.
 2016-12-20 14:54:26 -05:00
Michael Munday
419869b20e Fixes for DynASM. 
* s/hle/nle/
 * Fix RRF-b encoding (didbr instruction)
 2016-12-20 14:53:31 -05:00
Michael Munday
d006b07127 Add support for division. 2016-12-20 13:37:42 -05:00
Michael Munday
d94f4ac079 Add support for multiplication. 
Multiplication instructions don't set the overflow flag so we need
to manually check, which is why this is more complicated than
addition.
 2016-12-20 13:14:53 -05:00
Michael Munday
d256d99659 Add support for floating point add/sub. 2016-12-20 12:09:32 -05:00
Michael Munday
5df5e1f144 Add support for integer add/subtract. 
Still need to support floating point operations. Multiplication is a
little more complicated because it doesn't set the overflow flag.
 2016-12-20 09:41:19 -05:00
Michael Munday
5076a3ee2e Fix some DynASM instructions. 2016-12-20 09:27:40 -05:00
niravthakkar
28b6fe8759 Updated encoding for instructions 
Have replaced the characters used for encoding with their respective addressing modes
 2016-12-20 17:50:29 +05:30
Michael Munday
e467d784a9 Fix floating point fallback code for for loops. 
Adds a dependency on clfi. Not sure how to work around (don't
really want to always introduce a temporary).
 2016-12-19 16:03:21 -05:00
Michael Munday
299dc34db2 Add basic integer for loop support. 
> for i=1,3 do print(i) end
1
2
3
 2016-12-19 14:21:48 -05:00
Michael Munday
0d442ec688 Add some more instructions to DynASM. 2016-12-19 14:21:24 -05:00
Michael Munday
3330f6adc2 Fix KSHORT destination slot address. 2016-12-19 10:49:21 -05:00
Michael Munday
6a9855d988 Add support for print function call. 
Hello world now works.

> print("hello world!")
hello world!
 2016-12-17 19:56:56 -05:00
Michael Munday
bee112d431 Add support for global short assignments. 
In other words 'a = 1' now works.
 2016-12-16 17:23:46 -05:00
Michael Munday
24bdb7576d Add debug options to Makefile. 
We're going to need these for a while, so better to put in the
repository. Once we're happy things are working we can disable
the debug info and enable optimizations again.
 2016-12-15 11:03:13 -05:00
Michael Munday
2dcbf5be3e Implement more functions in the VM. 
Also adds segmentation faults to stubbed out functions to make it
easier to work out what the control flow is.
 2016-12-15 11:01:59 -05:00
ketank-new
b7c4e4b3d6 Added rre instruction format example 
example includes instruction fidr
 2016-12-15 13:51:46 +05:30
Michael Munday
ee4b942c94 Add vm_call handling code. 
Now prints the prompt (!).
 2016-12-14 22:22:49 -05:00
Michael Munday
f79a6f3f0b Add support for clm instruction. 2016-12-14 21:16:30 -05:00
Michael Munday
24f2ab48f5 Various fixes for vm_s390x.dasc. 2016-12-14 18:43:21 -05:00
Michael Munday
00d00e995f Fix extern handling in host vm builder. 2016-12-14 16:31:52 -05:00
Michael Munday
ef3ff100f2 Fix decoding of REL_EXT. 
REL_EXT has an argument which wasn't being properly jumped,
resulting in an early STOP (because the argument is 0).
 2016-12-14 16:27:38 -05:00
niravthakkar
49182c4d2e Added test for RRD and RRF-e 
Also have modified the function which can handle 3 arguments now
 2016-12-14 19:14:10 +05:30
niravthakkar
d63ff89c54 Added support for RRD addressing mode 
We may not require RRD mode but, Added to check working of RRF-e.
 2016-12-14 19:07:05 +05:30
niravthakkar
df7c3245e0 Minor Fix, correct the parameter used 
Instead of params[2] , params[1] was used, corrected it.
 2016-12-14 17:45:32 +05:30
niravthakkar
52368ac005 Minor cleanup 2016-12-14 14:47:15 +05:30
niravthakkar
ccd2614902 Added support for RIE-e, RSI, RXF, SI instructions 2016-12-14 14:18:07 +05:30
niravthakkar
f01f459573 Added support for RIL-c and RX-b instructions 2016-12-14 13:51:58 +05:30
niravthakkar
a8244c02ec Added support for RI-b and RI-c mode instructions 2016-12-14 13:41:55 +05:30
niravthakkar
4641b9a42d Added C support for I mode instructions 2016-12-14 13:30:49 +05:30
niravthakkar
cdb31062b7 Added the action part for I mode 2016-12-14 13:24:44 +05:30
niravthakkar
52ab0596da Added support for I mode instructions 2016-12-14 13:16:44 +05:30
niravthakkar
bc490013a3 Adding S mode instructions support 2016-12-14 13:08:32 +05:30
niravthakkar
45669fecef Added RRF-b mode support 2016-12-14 12:34:11 +05:30
niravthakkar
2f96ca3d91 Adding support for RXE mode instructions 2016-12-14 12:29:46 +05:30
niravthakkar
fc5874c951 Added RRF-e support 2016-12-14 12:22:08 +05:30
Michael Munday
7644f40b1a Add more interpreter code. 
Compilation is currently broken, a label is missing.
 2016-12-13 18:31:43 -05:00
Michael Munday
c83f4af9cc Add more RI-a (register-immediate) instructions. 2016-12-13 17:01:44 -05:00
Michael Munday
3ef1f21531 Add support for SIL instructions in DynASM. 2016-12-13 11:26:53 -05:00
Michael Munday
0b120ac64b Add partial implementation of vm_cpcall. 
Currently works if the call returns 0. Haven't yet written the code
needed to handle the non-zero case.
 2016-12-12 17:17:34 -05:00
Michael Munday
361a298371 Add lhi instruction and fix immediate parsing. 
We were reading immediate values as hexadecimal values, really we
want the default to be decimal unless the immediate has a '0x' prefix.
 2016-12-12 14:38:55 -05:00
niravthakkar
1c7a727f4a Correct the range of parameter, and merge the two case 2016-12-12 11:21:42 +05:30
Michael Munday
625aad5da0 Make LuaJIT compile on s390x. 
I've disabled both the JIT and FFI for now. I've also stripped almost
all of the assembly out of vm_s390x.dasc, leaving only labels for the
most part. This is enough to get LuaJIT to compile but of course if
you try and run it it will explode.

The idea now is to re-add enough functionality to get a very basic
Lua program to run.
 2016-12-09 16:28:39 -05:00
Michael Munday
111b62229a Define DASM_CHECKS when running tests. 2016-12-09 14:38:37 -05:00
Michael Munday
308fa09b6f Fix warning in dasm_s390x.h. 2016-12-09 14:35:21 -05:00
Michael Munday
052eb69750 Make host/buildvm_asm.c compile. 
I've added a rough implementation of this code. It is untested but
does compile.
 2016-12-09 14:32:02 -05:00
niravthakkar
aa096eda0e Minor fix 2016-12-09 19:46:12 +05:30
niravthakkar
cf4813f4ab Added SS-b support in C 2016-12-09 19:24:55 +05:30
niravthakkar
9b9e1ea667 Added SS-b mode 
Currently I am not able to test the functionality of this mode, need some help in that.
Also for the time being I have created different function for parsing, we can merge that later, just to make sure SS-a doesnt break, I have not merged this since I was not able to test it.
Let me know your comments on this
 2016-12-09 19:18:02 +05:30