23 commits

Author	SHA1	Message	Date
Toby Jaffey	d780c4e69d	Add UVM32_SYSCALL_RAND to get a "true" random number from the host, as I want to play zigtris and not have it be the same every time.	2025-12-17 20:19:31 +00:00
Toby Jaffey	09985655a2	Fix host-sdl/doom audio. Have app ask via syscall if audio can be rendered before sending, else any mismatch in rates will cause queue over/underflow in host-sdl.	2025-12-15 10:48:10 +00:00
Toby Jaffey	39e7dddc5a	Quick and dirty sound for DOOM. Samplerate seems off, but it's just a demo.	2025-12-14 23:32:34 +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	ef948e9797	Move target app only includes under apps/common	2025-12-12 15:49:03 +00:00
Toby Jaffey	ed57b62f79	Add render and getkey syscalls, for host-sdl use.	2025-12-12 14:25:01 +00:00
Toby Jaffey	dc93c314e6	Add uintptr_t	2025-12-11 20:36:49 +00:00
Toby Jaffey	6878c5210f	Fix weird definition of NULL	2025-12-11 16:57:23 +00:00
Toby Jaffey	b55c2bc88a	Add system for memory mapping a block of memory from the host.	2025-12-11 02:36:46 +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	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