2 * include/asm-i386/mach-default/apm.h
4 * Machine specific APM BIOS functions for generic.
5 * Split out from apm.c by Osamu Tomita <tomita@cinet.co.jp>
12 # define APM_DO_ZERO_SEGS \
15 "xorl %%edx, %%edx\n\t" \
16 "mov %%dx, %%ds\n\t" \
17 "mov %%dx, %%es\n\t" \
18 "mov %%dx, %%fs\n\t" \
20 # define APM_DO_POP_SEGS \
24 # define APM_DO_ZERO_SEGS
25 # define APM_DO_POP_SEGS
28 static inline void apm_bios_call_asm(u32 func, u32 ebx_in, u32 ecx_in,
29 u32 *eax, u32 *ebx, u32 *ecx,
33 * N.B. We do NOT need a cld after the BIOS call
34 * because we always save and restore the flags.
36 __asm__ __volatile__(APM_DO_ZERO_SEGS
39 "lcall *%%cs:apm_bios_entry\n\t"
44 : "=a" (*eax), "=b" (*ebx), "=c" (*ecx), "=d" (*edx),
46 : "a" (func), "b" (ebx_in), "c" (ecx_in)
50 static inline u8 apm_bios_call_simple_asm(u32 func, u32 ebx_in,
57 * N.B. We do NOT need a cld after the BIOS call
58 * because we always save and restore the flags.
60 __asm__ __volatile__(APM_DO_ZERO_SEGS
63 "lcall *%%cs:apm_bios_entry\n\t"
68 : "=a" (*eax), "=b" (error), "=c" (cx), "=d" (dx),
70 : "a" (func), "b" (ebx_in), "c" (ecx_in)
75 #endif /* _ASM_APM_H */