16 commits

Author	SHA1	Message	Date
Toby Jaffey	9baedb42e8	Add a stack canary, setup on boot	2025-12-10 01:00:36 +00:00
Toby Jaffey	ac554865a6	Make ROM const	2025-12-09 22:08:53 +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	9be9e056cd	Use internal memcpy/memset	2025-12-08 23:48:50 +00:00
Toby Jaffey	ee2ba56423	Add cmdline option to host <file.bin> [max_instrs_to_run], to set instruction meter. ... Allow a host to continue after a hung error, if it wants to. So, a program with while(1) {} can be run indefinitely.	2025-12-08 20:36:00 +00:00
Toby Jaffey	c691c3ebdf	Fix overly long event name	2025-12-08 13:04:05 +00:00
Toby Jaffey	a3c8b7584d	Remove debug	2025-12-08 12:54:30 +00:00
Toby Jaffey	9d6e6790e1	Cleanup syscall numbers	2025-12-08 12:53:33 +00:00
Toby Jaffey	61fe0e8647	Rename ioreq to syscall	2025-12-08 12:26:47 +00:00
Toby Jaffey	f6cd790fcb	ABI info	2025-12-08 07:31:21 +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	af3b48cb01	Fix comment, uvm32_reset() doesn't exist	2025-12-07 13:13:36 +00:00
Toby Jaffey	f235265e3f	Set stack pointer to before core registers in RAM	2025-12-07 00:59:35 +00:00
Toby Jaffey	047c9e3853	Move error strings out of header, to prevent unused warning	2025-12-06 21:35:00 +00:00
Toby Jaffey	c9d30b6d28	uvm32 initial version	2025-12-06 16:44:23 +00:00