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| author | Andrew Lee <alee14498@protonmail.com> | 2021-08-15 00:16:45 -0400 |
|---|---|---|
| committer | Andrew Lee <alee14498@protonmail.com> | 2021-08-15 00:16:45 -0400 |
| commit | 723428bebe3105ad3c3406e416402d1831b482c4 (patch) | |
| tree | ff990e306163515973746ddfb261f29ba8765441 /linux/include/asm/io.h | |
| download | linux-0.01-distro-723428bebe3105ad3c3406e416402d1831b482c4.tar.gz linux-0.01-distro-723428bebe3105ad3c3406e416402d1831b482c4.tar.bz2 linux-0.01-distro-723428bebe3105ad3c3406e416402d1831b482c4.zip | |
Inital commit
Diffstat (limited to 'linux/include/asm/io.h')
| -rw-r--r-- | linux/include/asm/io.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/linux/include/asm/io.h b/linux/include/asm/io.h new file mode 100644 index 0000000..d5cc42a --- /dev/null +++ b/linux/include/asm/io.h @@ -0,0 +1,24 @@ +#define outb(value,port) \ +__asm__ ("outb %%al,%%dx"::"a" (value),"d" (port)) + + +#define inb(port) ({ \ +unsigned char _v; \ +__asm__ volatile ("inb %%dx,%%al":"=a" (_v):"d" (port)); \ +_v; \ +}) + +#define outb_p(value,port) \ +__asm__ ("outb %%al,%%dx\n" \ + "\tjmp 1f\n" \ + "1:\tjmp 1f\n" \ + "1:"::"a" (value),"d" (port)) + +#define inb_p(port) ({ \ +unsigned char _v; \ +__asm__ volatile ("inb %%dx,%%al\n" \ + "\tjmp 1f\n" \ + "1:\tjmp 1f\n" \ + "1:":"=a" (_v):"d" (port)); \ +_v; \ +}) |