Commit Graph

8 Commits

Author SHA1 Message Date
kleink 5663256d0a Unlike in an i386 a.out assembler, where in an .align n directive n is meant
to be the logarithm to base 2 of the alignment, in an ELF environment n is
the actual alignment boundary; thus, adjust the directives accordingly.

Albeit the wonderful i386 architecture doesn't mind the smaller alignment in
an obvious way, it is likely to have resulted in some performance penalty
during the a.out->ELF transition.
1999-08-23 08:24:36 +00:00
jtk 10ec6359b5 add 32-bit register support to BIOSCALL interface 1998-08-31 23:52:40 +00:00
jtc 1bcecdd613 Fix tipo inherited from old version of TNF copyright template. 1997-10-09 08:48:33 +00:00
jtc 4620e80691 The copyright for this file has been assigned to the NetBSD Foundation 1996-11-04 23:04:43 +00:00
jtk 04f1e23fe1 BIOS trampoline is a static beast; generate it in the sources like
syscalls.h & friends, and include it when needed from the source directory.
1996-09-13 00:02:36 +00:00
mycroft dbacbd3636 Use machine/asm.h. Garbage collect. 1996-09-09 18:42:51 +00:00
jtk ec11419661 fix compilation problems when APM not configured 1996-09-09 11:31:40 +00:00
jtk fda7345c98 re-implement BIOS trampoline as a more general-purpose, reusable trampoline.
calling interface (via a grapple in locore.s) is:
/*
 * void bioscall(int function, struct apmregs *regs):
 * 	call the BIOS interrupt "function" from real mode with
 *	registers as specified in "regs"
 *	(for the flags, though, only these flags are passed to the BIOS;
 *	the remainder come from the flags register at the time of the call:
 *	(PSL_C|PSL_PF|PSL_AF|PSL_Z|PSL_N|PSL_D|PSL_V)
 *
 *	Fills in *regs with registers as returned by BIOS.
 */

still some generalization to do (moving this to a better named location,
cleaning up #if tests from NAPM > 0 to something else to allow easy
sharing by other drivers)

Thanks to Charles Hannum for complaining about the previous BIOS grapple
and inspiring me to hack this one together.
1996-09-08 15:36:51 +00:00