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Add sv_flags field to struct sysentvec with intention to provide description

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of the ABI of the currently executing image. Change some places to test
the flags instead of explicit comparing with address of known sysentvec
structures to determine ABI features.

Discussed with:	dchagin, imp, jhb, peter
This commit is contained in:
Konstantin Belousov 2008-11-22 12:36:15 +00:00
parent c85e8dcf18
commit b4cf0e62f4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=185169
16 changed files with 50 additions and 20 deletions
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3
sys/amd64/amd64/elf_machdep.c
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@ -72,7 +72,8 @@ struct sysentvec elf64_freebsd_sysvec = {
.sv_copyout_strings = exec_copyout_strings,
.sv_setregs = exec_setregs,
.sv_fixlimit = NULL,
.sv_maxssiz = NULL
.sv_maxssiz = NULL,
.sv_flags = SV_ABI_FREEBSD | SV_LP64
};
static Elf64_Brandinfo freebsd_brand_info = {

1
sys/amd64/linux32/linux32_sysvec.c
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@ -1026,6 +1026,7 @@ struct sysentvec elf_linux_sysvec = {
.sv_setregs = exec_linux_setregs,
.sv_fixlimit = linux32_fixlimit,
.sv_maxssiz = &linux32_maxssiz,
.sv_flags = SV_ABI_LINUX | SV_ILP32 | SV_IA32
};
static Elf32_Brandinfo linux_brand = {

3
sys/arm/arm/elf_machdep.c
View File

@ -72,7 +72,8 @@ struct sysentvec elf32_freebsd_sysvec = {
.sv_copyout_strings = exec_copyout_strings,
.sv_setregs = exec_setregs,
.sv_fixlimit = NULL,
.sv_maxssiz = NULL
.sv_maxssiz = NULL,
.sv_flags = SV_ABI_FREEBSD | SV_ILP32
};
static Elf32_Brandinfo freebsd_brand_info = {

3
sys/compat/ia32/ia32_sysvec.c
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@ -135,7 +135,8 @@ struct sysentvec ia32_freebsd_sysvec = {
.sv_copyout_strings = ia32_copyout_strings,
.sv_setregs = ia32_setregs,
.sv_fixlimit = ia32_fixlimit,
.sv_maxssiz = &ia32_maxssiz
.sv_maxssiz = &ia32_maxssiz,
.sv_flags = SV_ABI_FREEBSD | SV_IA32 | SV_ILP32
};

3
sys/compat/svr4/svr4_sysvec.c
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@ -190,7 +190,8 @@ struct sysentvec svr4_sysvec = {
.sv_copyout_strings = exec_copyout_strings,
.sv_setregs = exec_setregs,
.sv_fixlimit = NULL,
.sv_maxssiz = NULL
.sv_maxssiz = NULL,
.sv_flags = SV_ABI_UNDEF | SV_IA32 | SV_ILP32
};
const char svr4_emul_path[] = "/compat/svr4";

3
sys/i386/i386/elf_machdep.c
View File

@ -72,7 +72,8 @@ struct sysentvec elf32_freebsd_sysvec = {
.sv_copyout_strings = exec_copyout_strings,
.sv_setregs = exec_setregs,
.sv_fixlimit = NULL,
.sv_maxssiz = NULL
.sv_maxssiz = NULL,
.sv_flags = SV_ABI_FREEBSD | SV_IA32 | SV_ILP32
};
static Elf32_Brandinfo freebsd_brand_info = {

3
sys/i386/ibcs2/ibcs2_sysvec.c
View File

@ -85,7 +85,8 @@ struct sysentvec ibcs2_svr3_sysvec = {
.sv_copyout_strings = exec_copyout_strings,
.sv_setregs = exec_setregs,
.sv_fixlimit = NULL,
.sv_maxssiz = NULL
.sv_maxssiz = NULL,
.sv_flags = SV_ABI_UNDEF | SV_IA32 | SV_ILP32
};
static int

6
sys/i386/linux/linux_sysvec.c
View File

@ -837,7 +837,8 @@ struct sysentvec linux_sysvec = {
.sv_copyout_strings = exec_copyout_strings,
.sv_setregs = exec_linux_setregs,
.sv_fixlimit = NULL,
.sv_maxssiz = NULL
.sv_maxssiz = NULL,
.sv_flags = SV_ABI_LINUX | SV_AOUT | SV_IA32 | SV_ILP32
};
struct sysentvec elf_linux_sysvec = {
@ -867,7 +868,8 @@ struct sysentvec elf_linux_sysvec = {
.sv_copyout_strings = exec_copyout_strings,
.sv_setregs = exec_linux_setregs,
.sv_fixlimit = NULL,
.sv_maxssiz = NULL
.sv_maxssiz = NULL,
.sv_flags = SV_ABI_LINUX | SV_IA32 | SV_ILP32
};
static Elf32_Brandinfo linux_brand = {

3
sys/ia64/ia64/elf_machdep.c
View File

@ -80,7 +80,8 @@ struct sysentvec elf64_freebsd_sysvec = {
.sv_copyout_strings = exec_copyout_strings,
.sv_setregs = exec_setregs,
.sv_fixlimit = NULL,
.sv_maxssiz = NULL
.sv_maxssiz = NULL,
.sv_flags = SV_ABI_FREEBSD | SV_LP64
};
static Elf64_Brandinfo freebsd_brand_info = {

8
sys/kern/imgact_aout.c
View File

@ -82,7 +82,13 @@ struct sysentvec aout_sysvec = {
.sv_copyout_strings = exec_copyout_strings,
.sv_setregs = exec_setregs,
.sv_fixlimit = NULL,
.sv_maxssiz = NULL
.sv_maxssiz = NULL,
.sv_flags = SV_ABI_FREEBSD | SV_AOUT |
#if defined(__i386__)
SV_IA32 | SV_ILP32
#else
#error Choose SV_XXX flags for the platform
#endif
};
static int

4
sys/kern/kern_thr.c
View File

@ -57,14 +57,12 @@ __FBSDID("$FreeBSD$");
#ifdef COMPAT_IA32
extern struct sysentvec ia32_freebsd_sysvec;
static inline int
suword_lwpid(void *addr, lwpid_t lwpid)
{
int error;
if (curproc->p_sysent != &ia32_freebsd_sysvec)
if (SV_CURPROC_FLAG(SV_LP64))
error = suword(addr, lwpid);
else
error = suword32(addr, lwpid);

7
sys/kern/uipc_socket.c
View File

@ -136,9 +136,8 @@ __FBSDID("$FreeBSD$");
#ifdef COMPAT_IA32
#include <sys/mount.h>
#include <sys/sysent.h>
#include <compat/freebsd32/freebsd32.h>
extern struct sysentvec ia32_freebsd_sysvec;
#endif
static int soreceive_rcvoob(struct socket *so, struct uio *uio,
@ -2280,7 +2279,7 @@ sosetopt(struct socket *so, struct sockopt *sopt)
case SO_SNDTIMEO:
case SO_RCVTIMEO:
#ifdef COMPAT_IA32
if (curthread->td_proc->p_sysent == &ia32_freebsd_sysvec) {
if (SV_CURPROC_FLAG(SV_ILP32)) {
struct timeval32 tv32;
error = sooptcopyin(sopt, &tv32, sizeof tv32,
@ -2461,7 +2460,7 @@ sogetopt(struct socket *so, struct sockopt *sopt)
tv.tv_sec = optval / hz;
tv.tv_usec = (optval % hz) * tick;
#ifdef COMPAT_IA32
if (curthread->td_proc->p_sysent == &ia32_freebsd_sysvec) {
if (SV_CURPROC_FLAG(SV_ILP32)) {
struct timeval32 tv32;
CP(tv, tv32, tv_sec);

3
sys/mips/mips/elf_machdep.c
View File

@ -74,7 +74,8 @@ struct sysentvec elf32_freebsd_sysvec = {
.sv_copyout_strings = exec_copyout_strings,
.sv_setregs = exec_setregs,
.sv_fixlimit = NULL,
.sv_maxssiz = NULL
.sv_maxssiz = NULL,
.sv_flags = SV_ABI_FREEBSD | SV_ILP32
};
static Elf32_Brandinfo freebsd_brand_info = {

3
sys/powerpc/powerpc/elf_machdep.c
View File

@ -75,7 +75,8 @@ struct sysentvec elf32_freebsd_sysvec = {
.sv_copyout_strings = exec_copyout_strings,
.sv_setregs = exec_setregs,
.sv_fixlimit = NULL,
.sv_maxssiz = NULL
.sv_maxssiz = NULL,
.sv_flags = SV_ABI_FREEBSD | SV_ILP32
};
static Elf32_Brandinfo freebsd_brand_info = {

3
sys/sparc64/sparc64/elf_machdep.c
View File

@ -87,7 +87,8 @@ static struct sysentvec elf64_freebsd_sysvec = {
.sv_copyout_strings = exec_copyout_strings,
.sv_setregs = exec_setregs,
.sv_fixlimit = NULL,
.sv_maxssiz = NULL
.sv_maxssiz = NULL,
.sv_flags = SV_ABI_FREEBSD | SV_LP64
};
static Elf64_Brandinfo freebsd_brand_info = {

14
sys/sys/sysent.h
View File

@ -100,8 +100,22 @@ struct sysentvec {
void (*sv_setregs)(struct thread *, u_long, u_long, u_long);
void (*sv_fixlimit)(struct rlimit *, int);
u_long *sv_maxssiz;
u_int sv_flags;
};
#define SV_ILP32 0x000100
#define SV_LP64 0x000200
#define SV_IA32 0x004000
#define SV_AOUT 0x008000
#define SV_ABI_MASK 0xff
#define SV_CURPROC_FLAG(x) (curproc->p_sysent->sv_flags & (x))
#define SV_CURPROC_ABI() (curproc->p_sysent->sv_flags & SV_ABI_MASK)
/* same as ELFOSABI_XXX, to prevent header pollution */
#define SV_ABI_LINUX 3
#define SV_ABI_FREEBSD 9
#define SV_ABI_UNDEF 255
#ifdef _KERNEL
extern struct sysentvec aout_sysvec;
extern struct sysentvec elf_freebsd_sysvec;