/branches/network/uspace/lib/libc/arch/ia32/_link.ld.in |
---|
1,4 → 1,4 |
STARTUP(LIBC_PREFIX/arch/ARCH/src/entry.o) |
STARTUP(LIBC_PREFIX/arch/UARCH/src/entry.o) |
ENTRY(__entry) |
PHDRS { |
/branches/network/uspace/lib/libc/arch/ia32/include/syscall.h |
---|
36,8 → 36,25 |
#ifndef LIBC_ia32_SYSCALL_H_ |
#define LIBC_ia32_SYSCALL_H_ |
#include <syscall.h> |
#include <sys/types.h> |
#include <kernel/syscall/syscall.h> |
#define __syscall0 __syscall_sysenter |
#define __syscall1 __syscall_sysenter |
#define __syscall2 __syscall_sysenter |
#define __syscall3 __syscall_sysenter |
#define __syscall4 __syscall_sysenter |
#define __syscall5 __syscall_int |
#define __syscall6 __syscall_int |
extern sysarg_t |
__syscall_sysenter(const sysarg_t, const sysarg_t, const sysarg_t, const sysarg_t, |
const sysarg_t, const sysarg_t, const syscall_t); |
extern sysarg_t |
__syscall_int(const sysarg_t, const sysarg_t, const sysarg_t, const sysarg_t, |
const sysarg_t, const sysarg_t, const syscall_t); |
#endif |
/** @} |
/branches/network/uspace/lib/libc/arch/ia32/include/ddi.h |
---|
33,43 → 33,72 |
#ifndef LIBC_ia32_DDI_H_ |
#define LIBC_ia32_DDI_H_ |
static inline void outb(int16_t port, uint8_t b) |
{ |
asm volatile ("outb %0, %1\n" :: "a" (b), "d" (port)); |
} |
#include <sys/types.h> |
#include <libarch/types.h> |
static inline void outw(int16_t port, int16_t w) |
{ |
asm volatile ("outw %0, %1\n" :: "a" (w), "d" (port)); |
} |
#define IO_SPACE_BOUNDARY ((void *) (64 * 1024)) |
static inline void outl(int16_t port, uint32_t l) |
static inline uint8_t pio_read_8(ioport8_t *port) |
{ |
asm volatile ("outl %0, %1\n" :: "a" (l), "d" (port)); |
} |
static inline uint8_t inb(int16_t port) |
{ |
uint8_t val; |
asm volatile ("inb %1, %0 \n" : "=a" (val) : "d"(port)); |
asm volatile ( |
"inb %w[port], %b[val]\n" |
: [val] "=a" (val) |
: [port] "d" (port) |
); |
return val; |
} |
static inline int16_t inw(int16_t port) |
static inline uint16_t pio_read_16(ioport16_t *port) |
{ |
int16_t val; |
uint16_t val; |
asm volatile ("inw %1, %0 \n" : "=a" (val) : "d"(port)); |
asm volatile ( |
"inw %w[port], %w[val]\n" |
: [val] "=a" (val) |
: [port] "d" (port) |
); |
return val; |
} |
static inline uint32_t inl(int16_t port) |
static inline uint32_t pio_read_32(ioport32_t *port) |
{ |
uint32_t val; |
asm volatile ("inl %1, %0 \n" : "=a" (val) : "d"(port)); |
asm volatile ( |
"inl %w[port], %[val]\n" |
: [val] "=a" (val) |
: [port] "d" (port) |
); |
return val; |
} |
static inline void pio_write_8(ioport8_t *port, uint8_t val) |
{ |
asm volatile ( |
"outb %b[val], %w[port]\n" |
:: [val] "a" (val), [port] "d" (port) |
); |
} |
static inline void pio_write_16(ioport16_t *port, uint16_t val) |
{ |
asm volatile ( |
"outw %w[val], %w[port]\n" |
:: [val] "a" (val), [port] "d" (port) |
); |
} |
static inline void pio_write_32(ioport32_t *port, uint32_t val) |
{ |
asm volatile ( |
"outl %[val], %w[port]\n" |
:: [val] "a" (val), [port] "d" (port) |
); |
} |
#endif |
/branches/network/uspace/lib/libc/arch/ia32/Makefile.inc |
---|
29,17 → 29,13 |
## Toolchain configuration |
# |
ifndef CROSS_PREFIX |
CROSS_PREFIX = /usr/local |
endif |
TARGET = i686-pc-linux-gnu |
TOOLCHAIN_DIR = $(CROSS_PREFIX)/i686/bin |
ARCH_SOURCES += arch/$(ARCH)/src/syscall.S \ |
arch/$(ARCH)/src/fibril.S \ |
arch/$(ARCH)/src/tls.c \ |
arch/$(ARCH)/src/setjmp.S |
ARCH_SOURCES += arch/$(UARCH)/src/syscall.S \ |
arch/$(UARCH)/src/fibril.S \ |
arch/$(UARCH)/src/tls.c \ |
arch/$(UARCH)/src/setjmp.S |
LFLAGS += -N |
/branches/network/uspace/lib/libc/arch/ia32/src/syscall.S |
---|
28,14 → 28,14 |
.text |
/** Syscall wrapper. |
/** Syscall wrapper - INT $0x30 version. |
* |
* Mind the order of arguments. First two arguments and the syscall number go to |
* scratch registers. An optimized version of this wrapper for fewer arguments |
* could benefit from this and not save unused registers on the stack. |
*/ |
.global __syscall |
__syscall: |
.global __syscall_int |
__syscall_int: |
pushl %ebx |
pushl %esi |
pushl %edi |
53,3 → 53,38 |
popl %esi |
popl %ebx |
ret |
/** Syscall wrapper - SYSENTER version. |
* |
* This is an optimized version of syscall for four or less arguments. Note |
* that EBP and EDI are used to remember user stack address and the return |
* address. The kernel part doesn't save DS, ES and FS so the handler restores |
* these to the selector immediately following CS (it must be the flat data |
* segment, otherwise the SYSENTER wouldn't work in the first place). |
*/ |
.global __syscall_sysenter |
__syscall_sysenter: |
pushl %ebx |
pushl %esi |
pushl %edi |
pushl %ebp |
mov %esp, %ebp |
lea ra, %edi |
movl 20(%esp), %edx # First argument. |
movl 24(%esp), %ecx # Second argument. |
movl 28(%esp), %ebx # Third argument. |
movl 32(%esp), %esi # Fourth argument. |
movl 44(%esp), %eax # Syscall number. |
sysenter |
ra: |
movw %cs, %cx |
addw $8, %cx |
movw %cx, %ds |
movw %cx, %es |
movw %cx, %fs |
popl %ebp |
popl %edi |
popl %esi |
popl %ebx |
ret |