diff options
Diffstat (limited to 'src/farptr.h')
| -rw-r--r-- | src/farptr.h | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/src/farptr.h b/src/farptr.h index a270f87..1f3df9d 100644 --- a/src/farptr.h +++ b/src/farptr.h @@ -1,6 +1,6 @@ // Code to access multiple segments within gcc. // -// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net> +// Copyright (C) 2008,2009 Kevin O'Connor <kevin@koconnor.net> // // This file may be distributed under the terms of the GNU LGPLv3 license. #ifndef __FARPTR_H @@ -15,13 +15,13 @@ extern u16 __segment_FS, __segment_GS; // Low level macros for reading/writing memory via a segment selector. #define READ8_SEG(SEG, value, var) \ - __asm__("movb %%" #SEG ":%1, %b0" : "=Qi"(value) \ + __asm__("addr32 movb %%" #SEG ":%1, %b0" : "=Qi"(value) \ : "m"(var), "m"(__segment_ ## SEG)) #define READ16_SEG(SEG, value, var) \ - __asm__("movw %%" #SEG ":%1, %w0" : "=ri"(value) \ + __asm__("addr32 movw %%" #SEG ":%1, %w0" : "=ri"(value) \ : "m"(var), "m"(__segment_ ## SEG)) #define READ32_SEG(SEG, value, var) \ - __asm__("movl %%" #SEG ":%1, %0" : "=ri"(value) \ + __asm__("addr32 movl %%" #SEG ":%1, %0" : "=ri"(value) \ : "m"(var), "m"(__segment_ ## SEG)) #define READ64_SEG(SEG, value, var) do { \ union u64_u32_u __value; \ @@ -31,18 +31,19 @@ extern u16 __segment_FS, __segment_GS; *(u64*)&(value) = __value.val; \ } while (0) #define WRITE8_SEG(SEG, var, value) \ - __asm__("movb %b1, %%" #SEG ":%0" : "=m"(var) \ + __asm__("addr32 movb %b1, %%" #SEG ":%0" : "=m"(var) \ : "Q"(value), "m"(__segment_ ## SEG)) #define WRITE16_SEG(SEG, var, value) \ - __asm__("movw %w1, %%" #SEG ":%0" : "=m"(var) \ + __asm__("addr32 movw %w1, %%" #SEG ":%0" : "=m"(var) \ : "r"(value), "m"(__segment_ ## SEG)) #define WRITE32_SEG(SEG, var, value) \ - __asm__("movl %1, %%" #SEG ":%0" : "=m"(var) \ + __asm__("addr32 movl %1, %%" #SEG ":%0" : "=m"(var) \ : "r"(value), "m"(__segment_ ## SEG)) #define WRITE64_SEG(SEG, var, value) do { \ union u64_u32_u __value; \ union u64_u32_u *__w64_ptr = (union u64_u32_u *)&(var); \ - __value.val = (value); \ + typeof(var) __value_tmp = (value); \ + __value.val = *(u64*)&__value_tmp; \ WRITE32_SEG(SEG, __w64_ptr->hi, __value.hi); \ WRITE32_SEG(SEG, __w64_ptr->lo, __value.lo); \ } while (0) |