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47 commits

Author SHA1 Message Date
Toby Jaffey
dc0e5b0bcf Update latest precompiled binaries
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2025-12-18 12:24:25 +00:00
Toby Jaffey
4e61e3bd4a Make self and mandel examples a bit smaller
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2025-12-15 01:12:47 +00:00
Toby Jaffey
035608b04a Add agnes NES emulator (very slow). 
Add -W <n> -H <n> width and height options to host-sdl
 2025-12-15 00:37:12 +00:00
Toby Jaffey
2e90bfa812 Doom binary with audio
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2025-12-14 23:34:06 +00:00
Toby Jaffey
f917ba38ff Tighten up internal vs external functions, which lets optimiser do a better job, self.bin about 10% smaller. 2025-12-14 19:51:36 +00:00
Toby Jaffey
07bab3cca6 Rebuild precompiled bins 2025-12-14 19:37:00 +00:00
Toby Jaffey
e5fd17aff6 Fix issues with unaligned memory bus rd/wr. Improve fuzzing. 2025-12-14 18:35:00 +00:00
Toby Jaffey
5fb03b7d66 Remove RV32 breakpoints and interrupts, to save a tiny bit of code size.
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2025-12-14 15:05:35 +00:00
Toby Jaffey
065d2c64aa TinyGL example 2025-12-14 14:45:10 +00:00
Toby Jaffey
0736381925 Slim down mini-rv32imaa by removing zicsr and atomics - which are unused. 2025-12-14 11:49:28 +00:00
Toby Jaffey
861c75d80e Remove cycle counting and timers from mini-rv32ima 2025-12-14 11:19:23 +00:00
Toby Jaffey
5dc9acdf3d When a trap occurs in mini-rv32ima, always pass to the host rather than allowing running code to handle it. This would be important for a real OS, but the aim of uvm32 is embeddable logic - not full emulation. 
As all traps are caught by host, begin testing mini-rv32ima internals by checking PC oob and PC alignment.
 2025-12-14 11:00:45 +00:00
Toby Jaffey
be5dbbfa44 Latest doom binary (since crt0.S changes) 2025-12-14 11:00:26 +00:00
Toby Jaffey
8d67bf2fc3 Latest maze binary 2025-12-14 10:59:59 +00:00
Toby Jaffey
cfc1286874 Regenerate binaries, now default crt0 has changed 2025-12-14 01:36:47 +00:00
Toby Jaffey
173d5056a5 Completely remove UVM32_STACK_PROTECTION unless enabled (requires manually changing crt0.S), as this saves 16 bytes on every .bin 2025-12-14 00:09:32 +00:00
Toby Jaffey
2039de73f2 Rename getbuf to getslice 2025-12-13 23:15:06 +00:00
Toby Jaffey
1c9e9296be xxd -n (set variable name) doesn't exist on all systems, use shell utilities to build the headers 
Fixes #1
 2025-12-13 22:20:38 +00:00
Toby Jaffey
789cd74516 Disable stack canary by default 2025-12-12 21:01:40 +00:00
Toby Jaffey
8158ac647c Renaming and documentating header 2025-12-12 20:42:26 +00:00
Toby Jaffey
147a9f2198 Split includes. 
All code needs uvm32_sys.h, but uvm32_common_custom.h is optional (and has defs needed for demos)
 2025-12-12 15:56:47 +00:00
Toby Jaffey
ce63353156 Update makefile 2025-12-12 14:29:50 +00:00
Toby Jaffey
577aaadacd Zig allocator demo, using extram 2025-12-11 21:18:21 +00:00
Toby Jaffey
5fc4575888 Add precompiled heap example 2025-12-11 20:37:33 +00:00
Toby Jaffey
6878c5210f Fix weird definition of NULL 2025-12-11 16:57:23 +00:00
Toby Jaffey
1213c5673f Do .bin inclusion in C code at build 2025-12-11 12:48:41 +00:00
Toby Jaffey
a55300c8c3 Updated maze binary 2025-12-11 01:11:41 +00:00
Toby Jaffey
15806b592b Rebuilt binaries 2025-12-11 00:01:03 +00:00
Toby Jaffey
3e7b7cea4d Round power of 2 for memory size 2025-12-11 00:00:01 +00:00
Toby Jaffey
da7f70c456 Initial test framework 
Clean up makefiles
Everything buildable under docker (or natively)
 2025-12-10 16:36:33 +00:00
Toby Jaffey
e07eeab043 Make yield a regular syscall taking an argument. 
Allows "wait for interrupt"/"wait for event" type operation where VM code blocks until the host has something for it.
 2025-12-10 10:35:18 +00:00
Toby Jaffey
9baedb42e8 Add a stack canary, setup on boot 2025-12-10 01:00:36 +00:00
Toby Jaffey
9596838a4b Recursive maze demo, causes big stack usage 2025-12-09 23:29:16 +00:00
Toby Jaffey
76fba39a21 Rework syscall ABI. 
Syscalls now accept two parameters, allowing for things like "int count = read(buf, len)"
Rather than providing safe signatures for syscalls, the user is now given helper functions to safely parse incoming values, c-strings and slices.
 2025-12-09 21:51:35 +00:00
Toby Jaffey
8c11b45670 Move CPU core out of RAM. This limits possibilities for self-modifying code hacks, but is cleaner/safer. 2025-12-09 10:46:29 +00:00
Toby Jaffey
d56f34dc4e Use cursors 2025-12-09 00:56:07 +00:00
Toby Jaffey
04e7aaef88 Exit on keypress 2025-12-09 00:54:22 +00:00
Toby Jaffey
c37286cf01 Add "self", example of building uvm32 to run inside uvm32 
mandelbrot app is embedded in host-mini, which is then compiled to a .bin
 2025-12-08 23:54:14 +00:00
Toby Jaffey
7e7cabeb24 Prettier, better terminal handling, more variation 2025-12-08 21:41:51 +00:00
Toby Jaffey
ebb6518ec3 Lissajous, showing floating point arithmetic 2025-12-08 21:20:57 +00:00
Toby Jaffey
6735b159ac Make syscall names closer to libc 2025-12-08 16:28:00 +00:00
Toby Jaffey
9d6e6790e1 Cleanup syscall numbers 2025-12-08 12:53:33 +00:00
Toby Jaffey
274f347d90 Break console io example out into own app 2025-12-08 10:35:42 +00:00
Toby Jaffey
751f068486 Rework host/target interface to use ecall and proper syscalls instead of CSRs 2025-12-08 02:44:38 +00:00
Toby Jaffey
c0711213ae Add console tetris demo 2025-12-07 21:02:22 +00:00
Toby Jaffey
95333e06d8 More precompiled examples 2025-12-07 01:04:28 +00:00
Toby Jaffey
c9d30b6d28 uvm32 initial version 2025-12-06 16:44:23 +00:00