lots and lots of userspace stuff

1 files changed, 25 insertions, 0 deletions

diff --git a/documentation/kernel-interfaces/syscalls.txt b/documentation/kernel-interfaces/syscalls.txt
index ca93b56..399eb19 100644
--- a/documentation/kernel-interfaces/syscalls.txt
+++ b/documentation/kernel-interfaces/syscalls.txt
@@ -20,6 +20,7 @@ stream result:
   12 = other end closed
   13 = already exists
   14 = not sized
+  15 = not readable
 
 encode color:
   rax in: 0
@@ -173,3 +174,27 @@ get other end process handle:
   rdi in: stream handle
   rax out: stream result
   rdi out: process handle (if rax = success)
+
+start thread:
+  rax in: 20
+  rdi in: entry point
+  rsi in: argument
+  at entry, rsp is set to the top of a new stack, rdi is set
+  to the argument, and the other registers are undefined.
+
+clear socket read queue:
+  rax in: 21
+  rdi in: stream handle
+  rax out: number of bytes cleared (0 on bad handle or not a socket)
+
+get environment variable length:
+  rax in: 22
+  rdi in: pointer to variable name
+  rsi in: variable name length
+  rax out: variable value length, or -1 if unset
+
+get environment variable value:
+  rax in: 23
+  rdi in: pointer to variable name
+  rsi in: variable name length
+  rdx in: pointer to buffer for variable value