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Diffstat (limited to 'documentation/kernel-interface/syscalls.txt')
| -rw-r--r-- | documentation/kernel-interface/syscalls.txt | 178 |
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 |