rewrite application stuff in the kernel to support multitasking

1 files changed, 0 insertions, 178 deletions

diff --git a/documentation/kernel-interface/syscalls.txt b/documentation/kernel-interface/syscalls.txt
deleted file mode 100644
index 792c300..0000000
--- a/documentation/kernel-interface/syscalls.txt
+++ /dev/null
@@ -1,178 +0,0 @@
-on application entry:
-  there is a 1MiB - 8KiB area mapped writable and not
-  executable with guard pages on either side, and rsp is
-  set to the top of that. all other registers are set to 0.
-
-the ARGC environment variable holds the number of arguments to main.
-the ARGV0, ARGV1, ARGV2, etc environment variables hold those arguments.
-
-for all system calls:
-  rax, rdi, rsi, rdx are in/out paramters.
-  rbx, rbp, rsp, r12-r15 are preserved.
-  rcx, rflags, r8-r11 are clobbered.
-
-interrupts (including the timer!) are disabled during system calls.
-
-stream result:
-   0 = success
-   1 = bad handle
-   2 = io error
-   3 = out of bounds
-   4 = does not exist
-   5 = not a regular file
-   6 = not an executable
-   7 = not writable
-   8 = not seekable
-   9 = socket id already used
-  10 = socket id not in use
-  11 = socket listener closed
-  12 = other end closed
-  13 = already exists
-  14 = not sized
-
-encode color:
-  rax in: 0
-  edi in: r + g * 256 + b * 65536
-  eax out: encoded color
-
-get framebuffer:
-  rax in: 1
-  rax out: pointer to framebuffer
-  rdi out: width + height * 2 ** 32
-  esi out: pitch
-  framebuffer is always 32 bpp. use the encode color syscall
-  to encode colors. pitch is in dwords, not in bytes.
-
-open file:
-  rax in: 2
-  rdi in: pointer to file path
-  rsi in: file path length
-  rdx in:
-    bit 0: allow creation
-    bit 1: only allow creation
-  rax out: stream result
-  rdi out: stream handle (if rax = success)
-
-end this thread:
-  rax in: 3
-  edi in: exit code (signed, only used if this was last thread)
-
-get new pages:
-  rax in: 4
-  rdi in: number of pages to allocate
-  rax out: start of first page
-  the allocated pages are next to each other, writable, and not executable.
-
-get input packet:
-  rax in: 5
-  al out:
-    bit 7: was mouse packet
-    if bit 7:
-      bit 0: left mouse button down
-      bit 1: right mouse button down
-      bit 2: middle mouse button down
-  if bit 7:
-    di out: mouse x change (signed)
-    si out: mouse y change (signed)
-  else:
-    edi out: key packet
-
-create private socket:
-  rax in: 6
-  rax out: end 1 stream handle
-  rdi out: end 2 stream handle
-
-create socket listener:
-  rax in: 7
-  rdi in: pointer to id string
-  rsi in: id string length
-  rax out: stream result
-  rdi out: listener handle (if rax = 0)
-
-stop socket listener:
-  rax in: 8
-  rdi in: listener handle
-
-accept socket connection:
-  rax in: 9
-  rdi in: listener handle
-  rax out: stream result
-  rdi out: stream handle
-
-connect to socket:
-  rax in: 10
-  rdi in: pointer to id string
-  rsi in: id string length
-  rax out: stream result
-  rdi out: stream handle (if rax = 0)
-  if the listener is closed while this syscall is blocked, rax is
-  set to "socket id not in use" and not "socket listener closed"
-
-close stream:
-  rax in: 11
-  rdi in: stream handle
-
-seek stream:
-  returns "not seekable" for sockets
-  rax in: 12
-  rdi in: stream handle
-  sil in:
-    0 = relative to beginning
-    1 = relative to end
-    2 = relative to current position
-  rdx in: offset (signed)
-  rax out: stream result
-
-read from stream:
-  rax in: 13
-  rdi in: stream handle
-  rsi in: count
-  rdx in: pointer to buffer
-  rax out: stream result
-
-write to stream:
-  rax in: 14
-  rdi in: stream handle
-  rsi in: count
-  rdx in: pointer to buffer
-  rax out: stream result
-
-get stream length:
-  returns "not sized" for sockets
-  rax in: 15
-  rdi in: stream handle
-  rax out: stream result
-  rdi out: stream length (if rax = success)
-
-start process:
-  rax in: 16
-  rdi in: pointer to process start info struct
-  rax out: stream result
-  rdi out: process handle (if rax = success)
-  process start info struct:
-    qword: file path length
-    qword: pointer to file path
-    qword: count of environment variables
-    qword: pointer to array of environment variable structs
-    qword: count of gifted stream ends
-    qword: pointer to array of gifted stream structs
-  environment variable struct:
-    qword: name length
-    qword: pointer to name
-    qword: value length
-    qword: pointer to value
-  gifted stream struct:
-    qword: stream handle here
-    qword: new stream handle in child
-      new handle must be < 65536
-
-end this process:
-  rax in: 17
-  edi in: exit code (signed)
-
-set stream length:
-  returns "not sized" for sockets
-  rax in: 18
-  rdi in: stream handle
-  rsi in: new length
-  rax out: stream result