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authorAkinobu Mita <akinobu.mita@gmail.com>2009-07-18 11:11:06 -0400
committerIngo Molnar <mingo@elte.hu>2009-07-19 12:27:52 -0400
commit57594742a2b545f8f114cda34f15650be8ae976d (patch)
tree2682b10d68f3fb33aa047fa2a3ff6db2061c0740 /arch/x86/include/asm/system.h
parentfde0312d01b60a3fd5dc56e69a9613defbbc7097 (diff)
x86: Introduce set_desc_base() and set_desc_limit()
Rename set_base()/set_limit to set_desc_base()/set_desc_limit() and rewrite them in C. These are naturally introduced by the idea of get_desc_base()/get_desc_limit(). The conversion actually found the bug in apm_32.c: bad_bios_desc is written at run-time, but it is defined const variable. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> LKML-Reference: <20090718151105.GC11294@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include/asm/system.h')
-rw-r--r--arch/x86/include/asm/system.h27
1 files changed, 0 insertions, 27 deletions
diff --git a/arch/x86/include/asm/system.h b/arch/x86/include/asm/system.h
index 643c59b4bc6e..75c49c782e20 100644
--- a/arch/x86/include/asm/system.h
+++ b/arch/x86/include/asm/system.h
@@ -150,33 +150,6 @@ do { \
150#endif 150#endif
151 151
152#ifdef __KERNEL__ 152#ifdef __KERNEL__
153#define _set_base(addr, base) do { unsigned long __pr; \
154__asm__ __volatile__ ("movw %%dx,%1\n\t" \
155 "rorl $16,%%edx\n\t" \
156 "movb %%dl,%2\n\t" \
157 "movb %%dh,%3" \
158 :"=&d" (__pr) \
159 :"m" (*((addr)+2)), \
160 "m" (*((addr)+4)), \
161 "m" (*((addr)+7)), \
162 "0" (base) \
163 ); } while (0)
164
165#define _set_limit(addr, limit) do { unsigned long __lr; \
166__asm__ __volatile__ ("movw %%dx,%1\n\t" \
167 "rorl $16,%%edx\n\t" \
168 "movb %2,%%dh\n\t" \
169 "andb $0xf0,%%dh\n\t" \
170 "orb %%dh,%%dl\n\t" \
171 "movb %%dl,%2" \
172 :"=&d" (__lr) \
173 :"m" (*(addr)), \
174 "m" (*((addr)+6)), \
175 "0" (limit) \
176 ); } while (0)
177
178#define set_base(ldt, base) _set_base(((char *)&(ldt)) , (base))
179#define set_limit(ldt, limit) _set_limit(((char *)&(ldt)) , ((limit)-1))
180 153
181extern void native_load_gs_index(unsigned); 154extern void native_load_gs_index(unsigned);
182 155