freebsd-skq/sys/compat/ia32/ia32_genassym.c
kib 7c2eaa21fe Add support for executing the FreeBSD 1/i386 a.out binaries on amd64.
In particular:
- implement compat shims for old stat(2) variants and ogetdirentries(2);
- implement delivery of signals with ancient stack frame layout and
  corresponding sigreturn(2);
- implement old getpagesize(2);
- provide a user-mode trampoline and LDT call gate for lcall $7,$0;
- port a.out image activator and connect it to the build as a module
  on amd64.

The changes are hidden under COMPAT_43.

MFC after:   1 month
2011-04-01 11:16:29 +00:00

30 lines
1.1 KiB
C

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_compat.h"
#include <sys/param.h>
#include <sys/assym.h>
#include <sys/systm.h>
#include <sys/signal.h>
#include <compat/freebsd32/freebsd32_signal.h>
#include <compat/ia32/ia32_signal.h>
ASSYM(IA32_SIGF_HANDLER, offsetof(struct ia32_sigframe, sf_ah));
ASSYM(IA32_SIGF_UC, offsetof(struct ia32_sigframe, sf_uc));
#ifdef COMPAT_43
ASSYM(IA32_SIGF_SC, offsetof(struct ia32_sigframe3, sf_siginfo.si_sc));
#endif
ASSYM(IA32_UC_GS, offsetof(struct ia32_ucontext, uc_mcontext.mc_gs));
ASSYM(IA32_UC_FS, offsetof(struct ia32_ucontext, uc_mcontext.mc_fs));
ASSYM(IA32_UC_ES, offsetof(struct ia32_ucontext, uc_mcontext.mc_es));
ASSYM(IA32_UC_DS, offsetof(struct ia32_ucontext, uc_mcontext.mc_ds));
#ifdef COMPAT_FREEBSD4
ASSYM(IA32_SIGF_UC4, offsetof(struct ia32_sigframe4, sf_uc));
ASSYM(IA32_UC4_GS, offsetof(struct ia32_ucontext4, uc_mcontext.mc_gs));
ASSYM(IA32_UC4_FS, offsetof(struct ia32_ucontext4, uc_mcontext.mc_fs));
ASSYM(IA32_UC4_ES, offsetof(struct ia32_ucontext4, uc_mcontext.mc_es));
ASSYM(IA32_UC4_DS, offsetof(struct ia32_ucontext4, uc_mcontext.mc_ds));
#endif