1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
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.
a "mibisecond" is a 1024th of a second
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
15 = not readable
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)
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
any gifted streams must not have threads waiting to read from our end.
any environment variables in the current process whose names do not begin
with an underscore are also set in the child process. the environment
variables in the process start info override any with the same name.
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
get other end process handle:
returns "other end closed" for files
rax in: 19
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
set thread name:
rax in: 24
rdi in: pointer to thread name
rsi in: thread name length
sleep:
rax in: 25
rdi in: "mibiseconds" to sleep for
get time:
rax in: 26
rax out: "mibiseconds" since january 1st 2000
|