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Merge branch 'claude/shm-runtime-meaning-4fce7c'

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# Conflicts:
#	build.zig
#	system/drivers/virtio-gpu/virtio-gpu.zig
This commit is contained in:
Daniel Samson
2026-07-21 17:27:39 +01:00
parent ad0fd52cb8 0045fd87ba
commit 0a4388c3bc
24 changed files with 191 additions and 191 deletions
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system/abi.zig
+4 -4
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@@ -60,9 +60,9 @@ pub const SystemCall = enum(u64) {
timer_bind = 31, // timer_bind(endpoint, ms) -> 0/-errno: one-shot timer — posts a notification when ms elapse
klog_read = 32, // klog_read(offset, ptr, len) -> bytes copied: copy tagged log-ring stream bytes from `offset` out to a user buffer; fails once `offset` falls behind the ring's tail (re-sync via klog_status)
wall_clock = 33, // wall_clock() -> Unix epoch seconds (UTC): the RTC wall-clock time, for filesystem timestamps (mtime). Monotonic time is `clock`.
shm_create = 34, // shm_create(len) -> virtual_address (rax), handle (rdx): a shareable, zeroed, cacheable RAM region mapped into this AS; the handle is a capability passed to another process as an ipc_call send_cap (docs/display-v2.md)
shm_map = 35, // shm_map(cap) -> virtual_address: map the shared region named by a received capability into this address space (the same physical pages the creator sees)
shm_physical = 36, // shm_physical(cap) -> physical_address: the guest-physical base of a shared region held by capability, so a driver can program it into a device (e.g. virtio-gpu attach_backing); the pages are contiguous (docs/display-v2.md)
shared_memory_create = 34, // shared_memory_create(len) -> virtual_address (rax), handle (rdx): a shareable, zeroed, cacheable RAM region mapped into this AS; the handle is a capability passed to another process as an ipc_call send_cap (docs/display-v2.md)
shared_memory_map = 35, // shared_memory_map(cap) -> virtual_address: map the shared region named by a received capability into this address space (the same physical pages the creator sees)
shared_memory_physical = 36, // shared_memory_physical(cap) -> physical_address: the guest-physical base of a shared region held by capability, so a driver can program it into a device (e.g. virtio-gpu attach_backing); the pages are contiguous (docs/display-v2.md)
thread_spawn = 37, // thread_spawn(entry, stack_top, arg, exit_endpoint) -> tid: start a task sharing the caller's address space at `entry` on `stack_top`, `arg` in rdi; exit_endpoint (a handle, or no_cap) is notified when it ends — how join waits (docs/threading.md)
thread_exit = 38, // thread_exit(): end the calling thread, dropping one reference to its address space (destroyed on the last)
current_core = 39, // current_core() -> index: the dense 0-based index of the core the caller is running on (for parallelism/affinity introspection)
@@ -291,7 +291,7 @@ pub const ServiceId = enum(u32) {
block = 7, // a block-device driver (USB mass storage today): read/write of fixed-size blocks, the storage a filesystem sits on
fat = 8, // the FAT filesystem server; the VFS mounts it and forwards paths under its mount point (/mnt/usb) to it
display = 9, // the display service: owns the framebuffer, composites a layer stack, presents frames (docs/display.md)
shm_test = 10, // the shm test server (V2): a client passes it a shared-memory capability, it maps + verifies (docs/display-v2.md)
shared_memory_test = 10, // the shared-memory test server (V2): a client passes it a shared-memory capability, it maps + verifies (docs/display-v2.md)
scanout = 11, // a native scanout driver (virtio-gpu): the compositor finds it here to upgrade off the GOP framebuffer (docs/display-v2.md)
_,
};