diff options
Diffstat (limited to 'doc/ints.txt')
| -rw-r--r-- | doc/ints.txt | 58 |
1 files changed, 36 insertions, 22 deletions
diff --git a/doc/ints.txt b/doc/ints.txt index c89b433..ca4d91f 100644 --- a/doc/ints.txt +++ b/doc/ints.txt @@ -13,35 +13,49 @@ modifies ecx, edx modifies eax even if no value is returned see table 1 -file system calls have units of bytes unless otherwise specified -functions returning handles or pointers use 0 to indicate error -see keys.txt for the return type of the "get key" system call +file system calls have units of bytes unless otherwise specified. +functions returning handles or pointers use 0 to indicate error. +see keys.txt for the return type of the "get key" system call. the edx register of "start task" is a pointer to a null-terminated string. a pointer to a readonly copy of this string is put into the new task's edx. + the esi register of the new task contains a handle to the caller's task. + the edi register is copied directly, and is intended to hold a task handle. + this task handle is who stdio ipc communication should be done with. +ipc operations return 0xffffffff if the specified task doesn't exist. + "find unread ipc" system call returns 0 if there is no unread ipc. invalid system call numbers change eax to -1, and have no other effect. table 1: - function | eax | eax out | ebx | ecx | edx | esi | edi -----------------|-----|-----------------|----------------|----------------|-------------|--------|----- - open file | 0x0 | handle | drive number | path | | | - close file | 0x1 | | handle | | | | - file read | 0x2 | read | handle | file offset | count | buffer | - get file size | 0x3 | size | handle | | | | - start task | 0x4 | handle | drive number | path | passed sz | | - log string | 0x5 | | sz string | | | | - get key | 0x6 | keycode | | | | | - allocate ram | 0x7 | start pointer | pages | | | | - memory info | 0x8 | see table 2 | see table 2 | | | | - wait for task | 0x9 | | handle | | | | - enumerate dir | 0xa | count | drive number | path | see table 3 | max | - vga print at | 0xb | | row << 8 | col | sz string | | | - count of dir | 0xc | number of files | drive number | path | | | - clear screen | 0xd | | | | | | - set color | 0xe | | VGA color code | | | | - swap color | 0xf | | row << 8 | col | | | | + function | eax | eax out | ebx | ecx | edx | esi | edi +-------------------|------|-----------------|----------------|----------------|--------------|--------------|-------------- + open file | 0x00 | handle | drive number | path | | | + close file | 0x01 | | handle | | | | + file read | 0x02 | read | handle | file offset | count | buffer | + get file size | 0x03 | size | handle | | | | + start task | 0x04 | handle | drive number | path | passed sz | | passed dword + ipc send | 0x05 | written | task handle | max count | buffer | | + ipc read | 0x06 | read | task handle | max count | buffer | | + allocate ram | 0x07 | start pointer | pages | | | | + memory info | 0x08 | see table 2 | see table 2 | | | | + wait for task | 0x09 | | handle | | | | + enumerate dir | 0x0a | count | drive number | path | see table 3 | max | + system log | 0x0b | | message sz | | | | + count of dir | 0x0c | number of files | drive number | path | | | + new window | 0x0d | window handle | width | height | pixel buffer | | + delete window | 0x0e | | window handle | | | | + resize window | 0x0f | | window handle | width | height | | + reassign pixbuf | 0x10 | | window handle | pixel buffer | | | + paint window | 0x11 | | window handle | | | | + get win action | 0x12 | | window handle | action pointer | | | + wait for action | 0x13 | | | | | | + wait ipc send | 0x14 | | sending task | | | | + wait any ipc send | 0x15 | | | | | | + find unread ipc | 0x16 | sending task | | | | | + wait ipc read | 0x17 | | reading task | | | | + is task running | 0x18 | boolean | task handle | | | | table 2: @@ -63,4 +77,4 @@ esi is the maximum number of "directory info"s to be placed in the buffer. the "directory info" structure is 128 bytes long. The first 100 bytes are a null-terminated string indicating the name of the file represented by this entry. The next four bytes are a 32-bit integer indicating the size of the file represented in bytes. The next byte's lowest bit is a one if this - entry is a directory, and a zero if this entry is not. The remainder of the structure is reserved.
\ No newline at end of file + entry is a directory, and a zero if this entry is not. The remainder of the structure is reserved. |