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.
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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
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
1c9e9296be
xxd -n (set variable name) doesn't exist on all systems, use shell utilities to build the headers
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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.
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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
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
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
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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.
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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
76fba39a21
Rework syscall ABI.
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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
c37286cf01
Add "self", example of building uvm32 to run inside uvm32
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mandelbrot app is embedded in host-mini, which is then compiled to a .bin
2025-12-08 23:54:14 +00:00
