13 commits

Author	SHA1	Message	Date
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	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	3cdc9ae0ca	Default behaviour is to run to end of main	2025-12-09 01:19:09 +00:00
Toby Jaffey	d7673eb0b9	Add common typedefs	2025-12-08 23:48:32 +00:00
Toby Jaffey	41a94d0629	Fix putc()	2025-12-08 20:45:39 +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	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	9e6f6c5a67	Added IOREQ_MILLIS and IOREQ_GETC to get current time and poll keyboard. ... IOREQ_GETC implemented inefficiently, but is fine for demo purposes.	2025-12-07 20:29:10 +00:00
Toby Jaffey	c9d30b6d28	uvm32 initial version	2025-12-06 16:44:23 +00:00