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Initial sweep at dividing up the generic 32bit-on-64bit kernel support

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from the ia32 specific stuff.  Some of this still needs to move to the MI
freebsd32 area, and some needs to move to the MD area.  This is still
work-in-progress.
This commit is contained in:
Peter Wemm 2003-08-22 23:19:02 +00:00
parent 1c7abef7a8
commit c639ca93f4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=119334
5 changed files with 9 additions and 55 deletions
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1
sys/amd64/ia32/ia32_sigtramp.S
View File

@ -37,6 +37,7 @@
.code32
/*
* Signal trampoline, copied to top of user stack
* XXX may need to be MD to match backend sendsig handoff protocol
*/
ALIGN_TEXT
.globl ia32_sigcode

2
sys/compat/ia32/ia32_genassym.c
View File

@ -8,7 +8,7 @@ __FBSDID("$FreeBSD$");
#include <sys/systm.h>
#include <sys/signal.h>
#include <amd64/ia32/ia32_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));

1
sys/compat/ia32/ia32_sigtramp.S
View File

@ -37,6 +37,7 @@
.code32
/*
* Signal trampoline, copied to top of user stack
* XXX may need to be MD to match backend sendsig handoff protocol
*/
ALIGN_TEXT
.globl ia32_sigcode

9
sys/compat/ia32/ia32_sysvec.c
View File

@ -79,11 +79,11 @@ static register_t *ia32_copyout_strings(struct image_params *imgp);
static void ia32_setregs(struct thread *td, u_long entry, u_long stack,
u_long ps_strings);
extern struct sysent ia32_sysent[];
extern struct sysent freebsd32_sysent[];
struct sysentvec ia32_freebsd_sysvec = {
SYS_MAXSYSCALL,
ia32_sysent,
freebsd32_sysent,
0,
0,
NULL,
@ -124,8 +124,7 @@ SYSINIT(ia32, SI_SUB_EXEC, SI_ORDER_ANY,
(sysinit_cfunc_t) elf32_insert_brand_entry,
&ia32_brand_info);
extern int _ucode32sel, _udatasel;
/* XXX may be freebsd32 MI */
static register_t *
ia32_copyout_strings(struct image_params *imgp)
{
@ -232,7 +231,9 @@ ia32_copyout_strings(struct image_params *imgp)
/*
* Clear registers on exec
* XXX backend MD
*/
extern int _ucode32sel, _udatasel;
void
ia32_setregs(td, entry, stack, ps_strings)
struct thread *td;

51
sys/compat/ia32/ia32_util.h
View File

@ -37,53 +37,4 @@
#include <sys/sysent.h>
#include <sys/cdefs.h>
struct ia32_ps_strings {
u_int32_t ps_argvstr; /* first of 0 or more argument strings */
int ps_nargvstr; /* the number of argument strings */
u_int32_t ps_envstr; /* first of 0 or more environment strings */
int ps_nenvstr; /* the number of environment strings */
};
#define IA32_USRSTACK ((1ul << 32) - PAGE_SIZE)
#define IA32_PS_STRINGS (IA32_USRSTACK - sizeof(struct ia32_ps_strings))
static __inline caddr_t stackgap_init(void);
static __inline void *stackgap_alloc(caddr_t *, size_t);
static __inline caddr_t
stackgap_init()
{
#define szsigcode (*(curproc->p_sysent->sv_szsigcode))
return (caddr_t)(((caddr_t)IA32_PS_STRINGS) - szsigcode - SPARE_USRSPACE);
#undef szsigcode
}
static __inline void *
stackgap_alloc(sgp, sz)
caddr_t *sgp;
size_t sz;
{
void *p;
p = (void *) *sgp;
*sgp += ALIGN(sz);
return p;
}
extern const char ia32_emul_path[];
int ia32_emul_find(struct thread *, caddr_t *, const char *, char *,
char **, int);
#define CHECKALT(p, sgp, path, i) \
do { \
int _error; \
\
_error = ia32_emul_find(p, sgp, ia32_emul_path, path, \
&path, i); \
if (_error == EFAULT) \
return (_error); \
} while (0)
#define CHECKALTEXIST(p, sgp, path) CHECKALT((p), (sgp), (path), 0)
#define CHECKALTCREAT(p, sgp, path) CHECKALT((p), (sgp), (path), 1)
#define FREEBSD32_USRSTACK ((1ul << 32) - PAGE_SIZE)