tailix/libkernaux
1
0
Fork 0
mirror of https://github.com/tailix/libkernaux.git synced 2024-11-13 11:04:27 -05:00
Code Releases Activity

Implement serial console for x86_64

Browse source
This commit is contained in:
Alex Kotov 2022-01-11 11:48:54 +05:00
parent a793875c40
commit 67b3469318
Signed by: kotovalexarian
GPG key ID: 553C0EBBEB5D5F08
3 changed files with 66 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
include/kernaux/arch/x86_64.h
View file

@ -5,6 +5,8 @@
extern "C" {
#endif
#include <stdint.h>
#ifdef __cplusplus
}
#endif

58
include/kernaux/asm/x86_64.h
View file

@ -9,6 +9,64 @@ extern "C" {
void kernaux_asm_x86_64_hang() __attribute__((noreturn));
inline static uint8_t kernaux_asm_x86_64_inportb(uint16_t port);
inline static uint16_t kernaux_asm_x86_64_inportw(uint16_t port);
inline static uint32_t kernaux_asm_x86_64_inportd(uint16_t port);
inline static uint64_t kernaux_asm_x86_64_inportq(uint16_t port);
inline static void kernaux_asm_x86_64_outportb(uint16_t port, uint8_t value);
inline static void kernaux_asm_x86_64_outportw(uint16_t port, uint16_t value);
inline static void kernaux_asm_x86_64_outportd(uint16_t port, uint32_t value);
inline static void kernaux_asm_x86_64_outportq(uint16_t port, uint64_t value);
uint8_t kernaux_asm_x86_64_inportb(const uint16_t port)
{
register uint8_t result;
__asm__ volatile("inb %1, %0" : "=a" (result) : "dN" (port));
return result;
}
uint16_t kernaux_asm_x86_64_inportw(const uint16_t port)
{
register uint16_t result;
__asm__ volatile("inw %1, %0" : "=a" (result) : "dN" (port));
return result;
}
uint32_t kernaux_asm_x86_64_inportd(const uint16_t port)
{
register uint32_t result;
__asm__ volatile("ind %1, %0" : "=a" (result) : "dN" (port));
return result;
}
uint64_t kernaux_asm_x86_64_inportq(const uint16_t port)
{
register uint64_t result;
__asm__ volatile("inq %1, %0" : "=a" (result) : "dN" (port));
return result;
}
void kernaux_asm_x86_64_outportb(const uint16_t port, const uint8_t value)
{
__asm__ volatile("outb %1, %0" : : "dN" (port), "a" (value));
}
void kernaux_asm_x86_64_outportw(const uint16_t port, const uint16_t value)
{
__asm__ volatile("outw %1, %0" : : "dN" (port), "a" (value));
}
void kernaux_asm_x86_64_outportd(const uint16_t port, const uint32_t value)
{
__asm__ volatile("outd %1, %0" : : "dN" (port), "a" (value));
}
void kernaux_asm_x86_64_outportq(const uint16_t port, const uint64_t value)
{
__asm__ volatile("outq %1, %0" : : "dN" (port), "a" (value));
}
#ifdef __cplusplus
}
#endif

6
src/console.c
View file

@ -5,6 +5,9 @@
#ifdef ASM_I386
#include <kernaux/asm/i386.h>
#endif
#ifdef ASM_X86_64
#include <kernaux/asm/x86_64.h>
#endif
#include <kernaux/console.h>
#include <kernaux/libc.h>
@ -15,6 +18,9 @@ void kernaux_console_putc(const char c __attribute__((unused)))
#ifdef ASM_I386
kernaux_asm_i386_outportb(0x3F8, c);
#endif
#ifdef ASM_X86_64
kernaux_asm_x86_64_outportb(0x3F8, c);
#endif
}
void kernaux_console_print(const char *const s)