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* kernel: iterate over string with indexDanny Holman2021-01-201-6/+6
| | | | | | | | Iterate over a formatted string with an index and strlen instead of using a non-const pointer. The latter method may result in unsafe memory conditions. Signed-off-by: Danny Holman <dholman@gymli.xyz>
* kernel: maintain const on stringsDanny Holman2021-01-201-2/+2
| | | | | | Keep const pointers const when casting from void to char. Signed-off-by: Danny Holman <dholman@gymli.xyz>
* serial: don't declare serial_init as staticDanny Holman2021-01-201-0/+1
| | | | | | | | The function serial_init should not be declared as static. This function could change under a different architecture and should be defined with the target architecture. Signed-off-by: Danny Holman <dholman@gymli.xyz>
* i386: add serial port supportDanny Holman2021-01-201-1/+2
| | | | | | Add support for serial communication in the i386 architecture. Signed-off-by: Danny Holman <dholman@gymli.xyz>
* kernel: finish implementing string functionsDanny Holman2021-01-181-4/+38
| | | | | | Finish implementing the functions from string.h in string.c. Signed-off-by: Danny Holman <dholman@gymli.xyz>
* kernel: implement a basic printf functionDanny Holman2021-01-171-0/+72
| | | | | | Implement a basic printf function using primitives from the TTY library. Signed-off-by: Danny Holman <dholman@gymli.xyz>
* kernel: add main initialization functionsDanny Holman2021-01-171-0/+7
| | | | | | Add the main initialiazation functions within the main kernel directory. Signed-off-by: Danny Holman <dholman@gymli.xyz>
* kernel: add string.h implementationsDanny Holman2021-01-171-0/+24
Add implementations for functions declared in string.h. Signed-off-by: Danny Holman <dholman@gymli.xyz>