christoph/lecture-operating-system-development
1
Fork 0
Code Activity

add ioport cast to unsigned short (for offsetting)

Browse Source
This commit is contained in:
Christoph Urlacher
2022-07-23 14:28:57 +02:00
parent d83df8c180
commit c658d55fe6
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
c_os/kernel/IOport.h
View File

@ -37,7 +37,7 @@ public:
void outb(unsigned char offset, unsigned char val) const { void outb(unsigned char offset, unsigned char val) const {
asm volatile("outb %0, %1" asm volatile("outb %0, %1"
: :
: "a"(val), "Nd"(address + offset)); : "a"(val), "Nd"((unsigned short)(address + offset)));
} }
// Wortweise Ausgabe eines Wertes ueber einen I/O-Port. // Wortweise Ausgabe eines Wertes ueber einen I/O-Port.
@ -70,7 +70,7 @@ public:
asm volatile("inb %1, %0" asm volatile("inb %1, %0"
: "=a"(ret) : "=a"(ret)
: "Nd"(address + offset)); : "Nd"((unsigned short)(address + offset)));
return ret; return ret;
} }