NAME¶

qcvm — A standalone QuakeC VM binary executor

SYNOPSIS¶

DESCRIPTION¶

qcvm is an executor for QuakeC VM binary files created using a QC compiler such as gmqcc(1) or fteqcc. It provides a small set of builtin functions, and by default executes the main() function if there is one. Some options useful for debugging are available as well.

OPTIONS¶

There are 2 types of options. Options for the executor, and parameter options used to add parameters which are passed to the main function on execution.

-h, --help

Show a usage message and exit.

-trace

Trace the execution. Each instruction will be printed to stdout before executing it.

-profile

Perform some profiling. This is currently not really implemented, the option is available nonetheless.

-info

Print information from the program's header instead of executing.

-disasm

Disassemble the program by function instead of executing.

-disasm-func function

Search for and disassemble the given function.

-printdefs

List all entries from the program's defs-section. Effectively listing all the global variables of the program. This option disables execution.

-printfields

List all entries from the program's fields-section. Listing all entity-fields declared in the program. This option disables execution.

-printfuns

List functions and some information about their parameters. This option disables execution. With a verbosity level of 1, builtin numbers are printed. With a verbosity of 2, the function's sizes are printed as well. This takes a little longer since the size is found by searching for a ‘DONE’ instruction in the code.

-v

Increase verbosity level, can be used multiple times.

-vector 'x y z'

Append a vector parameter to be passed to main().

-float number

Append a float parameter to be passed to main().

-string 'text'

Append a string parameter to be passed to main().

BUILTINS¶

The following builtin functions are available:

1) void print(string...) = #1;

Print the passed strings to stdout. At most 8 strings are allowed.

2) string ftos(float) = #2;

Convert a float to a string.

3) entity spawn() = #3;

Spawn an entity.

4) void remove(entity) = #4;

Remove an entity.

5) string vtos(vector) = #5;

Convert a vector to a string.

6) void error(string...) = #6;

Print strings to stdout and then exit with an error (limited to 8 arguments)

7) float vlen(vector) = #7;

Get the length of a vector.

8) string etos(entity) = #8;

Get the entity ID as string.

9) float stof(string) = #9;

Convert a string to a float.

10) string strcat(string, string) = #10;

Concatenate two strings, returning a tempstring.

11) float strcmp(string, string) = #11;

12) float strncmp(string, string, float) = #11;

Compare two strings. Returns the same as the corresponding C functions.

12) vector normalize(vector) = #12;

Normalize a vector so its length is 1.

13) float sqrt(float) = #13;

Get a value's square root.

SEE ALSO¶

gmqcc(1)

AUTHOR¶

See <http://graphitemaster.github.com/gmqcc>.

BUGS¶

Please report bugs on <http://github.com/graphitemaster/gmqcc/issues>, or see <http://graphitemaster.github.com/gmqcc> on how to contact us.