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bsd-user: FreeBSD update 

basic FreeBSD sysarch(2) handling
fixed syscall errno return

Signed-off-by: Juergen Lock <nox@jelal.kn-bremen.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Juergen Lock 2009-10-17 00:34:26 +02:00 committed by Blue Swirl
parent 976b2037e5
commit 78cfb07fe0
9 changed files with 462 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
bsd-user/elfload.c
View File

@ -126,6 +126,9 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
regs->rax = 0;
regs->rsp = infop->start_stack;
regs->rip = infop->entry;
if (bsd_type == target_freebsd) {
regs->rdi = infop->start_stack;
}
}
#else
@ -249,8 +252,13 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
#else
if (personality(infop->personality) == PER_LINUX32)
regs->u_regs[14] = infop->start_stack - 16 * 4;
else
else {
regs->u_regs[14] = infop->start_stack - 16 * 8 - STACK_BIAS;
if (bsd_type == target_freebsd) {
regs->u_regs[8] = infop->start_stack;
regs->u_regs[11] = infop->start_stack;
}
}
#endif
}

1
bsd-user/freebsd/strace.list
View File

@ -39,6 +39,7 @@
{ TARGET_FREEBSD_NR_ftruncate, "ftruncate", NULL, NULL, NULL },
{ TARGET_FREEBSD_NR_futimes, "futimes", NULL, NULL, NULL },
{ TARGET_FREEBSD_NR_getdirentries, "getdirentries", NULL, NULL, NULL },
{ TARGET_FREEBSD_NR_freebsd6_mmap, "freebsd6_mmap", NULL, NULL, NULL },
{ TARGET_FREEBSD_NR_getegid, "getegid", "%s()", NULL, NULL },
{ TARGET_FREEBSD_NR_geteuid, "geteuid", "%s()", NULL, NULL },
{ TARGET_FREEBSD_NR_getfh, "getfh", NULL, NULL, NULL },

14
bsd-user/i386/syscall.h
View File

@ -143,5 +143,19 @@ struct target_vm86plus_struct {
struct target_vm86plus_info_struct vm86plus;
};
/* FreeBSD sysarch(2) */
#define TARGET_FREEBSD_I386_GET_LDT 0
#define TARGET_FREEBSD_I386_SET_LDT 1
/* I386_IOPL */
#define TARGET_FREEBSD_I386_GET_IOPERM 3
#define TARGET_FREEBSD_I386_SET_IOPERM 4
/* xxxxx */
#define TARGET_FREEBSD_I386_VM86 6
#define TARGET_FREEBSD_I386_GET_FSBASE 7
#define TARGET_FREEBSD_I386_SET_FSBASE 8
#define TARGET_FREEBSD_I386_GET_GSBASE 9
#define TARGET_FREEBSD_I386_SET_GSBASE 10
#define UNAME_MACHINE "i386"

116
bsd-user/main.c
View File

@ -46,6 +46,7 @@ int have_guest_base;
static const char *interp_prefix = CONFIG_QEMU_PREFIX;
const char *qemu_uname_release = CONFIG_UNAME_RELEASE;
extern char **environ;
enum BSDType bsd_type;
/* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
we allocate a bigger stack. Need a better solution, for example
@ -168,7 +169,7 @@ static void set_idt(int n, unsigned int dpl)
}
#endif
void cpu_loop(CPUX86State *env, enum BSDType bsd_type)
void cpu_loop(CPUX86State *env)
{
int trapnr;
abi_ulong pc;
@ -179,27 +180,90 @@ void cpu_loop(CPUX86State *env, enum BSDType bsd_type)
switch(trapnr) {
case 0x80:
/* syscall from int $0x80 */
env->regs[R_EAX] = do_openbsd_syscall(env,
env->regs[R_EAX],
env->regs[R_EBX],
env->regs[R_ECX],
env->regs[R_EDX],
env->regs[R_ESI],
env->regs[R_EDI],
env->regs[R_EBP]);
if (bsd_type == target_freebsd) {
abi_ulong params = (abi_ulong) env->regs[R_ESP] +
sizeof(int32_t);
int32_t syscall_nr = env->regs[R_EAX];
int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8;
if (syscall_nr == TARGET_FREEBSD_NR_syscall) {
get_user_s32(syscall_nr, params);
params += sizeof(int32_t);
} else if (syscall_nr == TARGET_FREEBSD_NR___syscall) {
get_user_s32(syscall_nr, params);
params += sizeof(int64_t);
}
get_user_s32(arg1, params);
params += sizeof(int32_t);
get_user_s32(arg2, params);
params += sizeof(int32_t);
get_user_s32(arg3, params);
params += sizeof(int32_t);
get_user_s32(arg4, params);
params += sizeof(int32_t);
get_user_s32(arg5, params);
params += sizeof(int32_t);
get_user_s32(arg6, params);
params += sizeof(int32_t);
get_user_s32(arg7, params);
params += sizeof(int32_t);
get_user_s32(arg8, params);
env->regs[R_EAX] = do_freebsd_syscall(env,
syscall_nr,
arg1,
arg2,
arg3,
arg4,
arg5,
arg6,
arg7,
arg8);
} else { //if (bsd_type == target_openbsd)
env->regs[R_EAX] = do_openbsd_syscall(env,
env->regs[R_EAX],
env->regs[R_EBX],
env->regs[R_ECX],
env->regs[R_EDX],
env->regs[R_ESI],
env->regs[R_EDI],
env->regs[R_EBP]);
}
if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
env->regs[R_EAX] = -env->regs[R_EAX];
env->eflags |= CC_C;
} else {
env->eflags &= ~CC_C;
}
break;
#ifndef TARGET_ABI32
case EXCP_SYSCALL:
/* linux syscall from syscall intruction */
env->regs[R_EAX] = do_openbsd_syscall(env,
env->regs[R_EAX],
env->regs[R_EDI],
env->regs[R_ESI],
env->regs[R_EDX],
env->regs[10],
env->regs[8],
env->regs[9]);
/* syscall from syscall intruction */
if (bsd_type == target_freebsd)
env->regs[R_EAX] = do_freebsd_syscall(env,
env->regs[R_EAX],
env->regs[R_EDI],
env->regs[R_ESI],
env->regs[R_EDX],
env->regs[R_ECX],
env->regs[8],
env->regs[9], 0, 0);
else { //if (bsd_type == target_openbsd)
env->regs[R_EAX] = do_openbsd_syscall(env,
env->regs[R_EAX],
env->regs[R_EDI],
env->regs[R_ESI],
env->regs[R_EDX],
env->regs[10],
env->regs[8],
env->regs[9]);
}
env->eip = env->exception_next_eip;
if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
env->regs[R_EAX] = -env->regs[R_EAX];
env->eflags |= CC_C;
} else {
env->eflags &= ~CC_C;
}
break;
#endif
#if 0
@ -446,7 +510,7 @@ static void flush_windows(CPUSPARCState *env)
#endif
}
void cpu_loop(CPUSPARCState *env, enum BSDType bsd_type)
void cpu_loop(CPUSPARCState *env)
{
int trapnr, ret, syscall_nr;
//target_siginfo_t info;
@ -458,6 +522,10 @@ void cpu_loop(CPUSPARCState *env, enum BSDType bsd_type)
#ifndef TARGET_SPARC64
case 0x80:
#else
/* FreeBSD uses 0x141 for syscalls too */
case 0x141:
if (bsd_type != target_freebsd)
goto badtrap;
case 0x100:
#endif
syscall_nr = env->gregs[1];
@ -465,7 +533,7 @@ void cpu_loop(CPUSPARCState *env, enum BSDType bsd_type)
ret = do_freebsd_syscall(env, syscall_nr,
env->regwptr[0], env->regwptr[1],
env->regwptr[2], env->regwptr[3],
env->regwptr[4], env->regwptr[5]);
env->regwptr[4], env->regwptr[5], 0, 0);
else if (bsd_type == target_netbsd)
ret = do_netbsd_syscall(env, syscall_nr,
env->regwptr[0], env->regwptr[1],
@ -482,6 +550,7 @@ void cpu_loop(CPUSPARCState *env, enum BSDType bsd_type)
env->regwptr[4], env->regwptr[5]);
}
if ((unsigned int)ret >= (unsigned int)(-515)) {
ret = -ret;
#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
env->xcc |= PSR_CARRY;
#else
@ -587,6 +656,9 @@ void cpu_loop(CPUSPARCState *env, enum BSDType bsd_type)
}
break;
default:
#ifdef TARGET_SPARC64
badtrap:
#endif
printf ("Unhandled trap: 0x%x\n", trapnr);
cpu_dump_state(env, stderr, fprintf, 0);
exit (1);
@ -668,7 +740,7 @@ int main(int argc, char **argv)
int gdbstub_port = 0;
char **target_environ, **wrk;
envlist_t *envlist = NULL;
enum BSDType bsd_type = target_openbsd;
bsd_type = target_openbsd;
if (argc <= 1)
usage();
@ -1033,7 +1105,7 @@ int main(int argc, char **argv)
gdbserver_start (gdbstub_port);
gdb_handlesig(env, 0);
}
cpu_loop(env, bsd_type);
cpu_loop(env);
/* never exits */
return 0;
}

6
bsd-user/qemu.h
View File

@ -18,6 +18,7 @@ enum BSDType {
target_netbsd,
target_openbsd,
};
extern enum BSDType bsd_type;
#include "syscall_defs.h"
#include "syscall.h"
@ -130,7 +131,8 @@ abi_long do_brk(abi_ulong new_brk);
void syscall_init(void);
abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1,
abi_long arg2, abi_long arg3, abi_long arg4,
abi_long arg5, abi_long arg6);
abi_long arg5, abi_long arg6, abi_long arg7,
abi_long arg8);
abi_long do_netbsd_syscall(void *cpu_env, int num, abi_long arg1,
abi_long arg2, abi_long arg3, abi_long arg4,
abi_long arg5, abi_long arg6);
@ -139,7 +141,7 @@ abi_long do_openbsd_syscall(void *cpu_env, int num, abi_long arg1,
abi_long arg5, abi_long arg6);
void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
extern THREAD CPUState *thread_env;
void cpu_loop(CPUState *env, enum BSDType bsd_type);
void cpu_loop(CPUState *env);
char *target_strerror(int err);
int get_osversion(void);
void fork_start(void);

295
bsd-user/syscall.c
View File

@ -29,6 +29,7 @@
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/syscall.h>
#include <sys/sysctl.h>
#include <signal.h>
#include <utime.h>
@ -40,20 +41,283 @@
static abi_ulong target_brk;
static abi_ulong target_original_brk;
#define get_errno(x) (x)
static inline abi_long get_errno(abi_long ret)
{
if (ret == -1)
/* XXX need to translate host -> target errnos here */
return -(errno);
else
return ret;
}
#define target_to_host_bitmask(x, tbl) (x)
static inline int is_error(abi_long ret)
{
return (abi_ulong)ret >= (abi_ulong)(-4096);
}
void target_set_brk(abi_ulong new_brk)
{
target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk);
}
/* do_obreak() must return target errnos. */
static abi_long do_obreak(abi_ulong new_brk)
{
abi_ulong brk_page;
abi_long mapped_addr;
int new_alloc_size;
if (!new_brk)
return 0;
if (new_brk < target_original_brk)
return -TARGET_EINVAL;
brk_page = HOST_PAGE_ALIGN(target_brk);
/* If the new brk is less than this, set it and we're done... */
if (new_brk < brk_page) {
target_brk = new_brk;
return 0;
}
/* We need to allocate more memory after the brk... */
new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page + 1);
mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size,
PROT_READ|PROT_WRITE,
MAP_ANON|MAP_FIXED|MAP_PRIVATE, -1, 0));
if (!is_error(mapped_addr))
target_brk = new_brk;
else
return mapped_addr;
return 0;
}
#if defined(TARGET_I386)
static abi_long do_freebsd_sysarch(CPUX86State *env, int op, abi_ulong parms)
{
abi_long ret = 0;
abi_ulong val;
int idx;
switch(op) {
#ifdef TARGET_ABI32
case TARGET_FREEBSD_I386_SET_GSBASE:
case TARGET_FREEBSD_I386_SET_FSBASE:
if (op == TARGET_FREEBSD_I386_SET_GSBASE)
#else
case TARGET_FREEBSD_AMD64_SET_GSBASE:
case TARGET_FREEBSD_AMD64_SET_FSBASE:
if (op == TARGET_FREEBSD_AMD64_SET_GSBASE)
#endif
idx = R_GS;
else
idx = R_FS;
if (get_user(val, parms, abi_ulong))
return -TARGET_EFAULT;
cpu_x86_load_seg(env, idx, 0);
env->segs[idx].base = val;
break;
#ifdef TARGET_ABI32
case TARGET_FREEBSD_I386_GET_GSBASE:
case TARGET_FREEBSD_I386_GET_FSBASE:
if (op == TARGET_FREEBSD_I386_GET_GSBASE)
#else
case TARGET_FREEBSD_AMD64_GET_GSBASE:
case TARGET_FREEBSD_AMD64_GET_FSBASE:
if (op == TARGET_FREEBSD_AMD64_GET_GSBASE)
#endif
idx = R_GS;
else
idx = R_FS;
val = env->segs[idx].base;
if (put_user(val, parms, abi_ulong))
return -TARGET_EFAULT;
break;
/* XXX handle the others... */
default:
ret = -TARGET_EINVAL;
break;
}
return ret;
}
#endif
#ifdef TARGET_SPARC
static abi_long do_freebsd_sysarch(void *env, int op, abi_ulong parms)
{
/* XXX handle
* TARGET_FREEBSD_SPARC_UTRAP_INSTALL,
* TARGET_FREEBSD_SPARC_SIGTRAMP_INSTALL
*/
return -TARGET_EINVAL;
}
#endif
#ifdef __FreeBSD__
/*
* XXX this uses the undocumented oidfmt interface to find the kind of
* a requested sysctl, see /sys/kern/kern_sysctl.c:sysctl_sysctl_oidfmt()
* (this is mostly copied from src/sbin/sysctl/sysctl.c)
*/
static int
oidfmt(int *oid, int len, char *fmt, uint32_t *kind)
{
int qoid[CTL_MAXNAME+2];
uint8_t buf[BUFSIZ];
int i;
size_t j;
qoid[0] = 0;
qoid[1] = 4;
memcpy(qoid + 2, oid, len * sizeof(int));
j = sizeof(buf);
i = sysctl(qoid, len + 2, buf, &j, 0, 0);
if (i)
return i;
if (kind)
*kind = *(uint32_t *)buf;
if (fmt)
strcpy(fmt, (char *)(buf + sizeof(uint32_t)));
return (0);
}
/*
* try and convert sysctl return data for the target.
* XXX doesn't handle CTLTYPE_OPAQUE and CTLTYPE_STRUCT.
*/
static int sysctl_oldcvt(void *holdp, size_t holdlen, uint32_t kind)
{
switch (kind & CTLTYPE) {
case CTLTYPE_INT:
case CTLTYPE_UINT:
*(uint32_t *)holdp = tswap32(*(uint32_t *)holdp);
break;
#ifdef TARGET_ABI32
case CTLTYPE_LONG:
case CTLTYPE_ULONG:
*(uint32_t *)holdp = tswap32(*(long *)holdp);
break;
#else
case CTLTYPE_LONG:
*(uint64_t *)holdp = tswap64(*(long *)holdp);
case CTLTYPE_ULONG:
*(uint64_t *)holdp = tswap64(*(unsigned long *)holdp);
break;
#endif
case CTLTYPE_QUAD:
*(uint64_t *)holdp = tswap64(*(uint64_t *)holdp);
break;
case CTLTYPE_STRING:
break;
default:
/* XXX unhandled */
return -1;
}
return 0;
}
/* XXX this needs to be emulated on non-FreeBSD hosts... */
static abi_long do_freebsd_sysctl(abi_ulong namep, int32_t namelen, abi_ulong oldp,
abi_ulong oldlenp, abi_ulong newp, abi_ulong newlen)
{
abi_long ret;
void *hnamep, *holdp, *hnewp = NULL;
size_t holdlen;
abi_ulong oldlen = 0;
int32_t *snamep = qemu_malloc(sizeof(int32_t) * namelen), *p, *q, i;
uint32_t kind = 0;
if (oldlenp)
get_user_ual(oldlen, oldlenp);
if (!(hnamep = lock_user(VERIFY_READ, namep, namelen, 1)))
return -TARGET_EFAULT;
if (newp && !(hnewp = lock_user(VERIFY_READ, newp, newlen, 1)))
return -TARGET_EFAULT;
if (!(holdp = lock_user(VERIFY_WRITE, oldp, oldlen, 0)))
return -TARGET_EFAULT;
holdlen = oldlen;
for (p = hnamep, q = snamep, i = 0; i < namelen; p++, i++)
*q++ = tswap32(*p);
oidfmt(snamep, namelen, NULL, &kind);
/* XXX swap hnewp */
ret = get_errno(sysctl(snamep, namelen, holdp, &holdlen, hnewp, newlen));
if (!ret)
sysctl_oldcvt(holdp, holdlen, kind);
put_user_ual(holdlen, oldlenp);
unlock_user(hnamep, namep, 0);
unlock_user(holdp, oldp, holdlen);
if (hnewp)
unlock_user(hnewp, newp, 0);
qemu_free(snamep);
return ret;
}
#endif
/* FIXME
* lock_iovec()/unlock_iovec() have a return code of 0 for success where
* other lock functions have a return code of 0 for failure.
*/
static abi_long lock_iovec(int type, struct iovec *vec, abi_ulong target_addr,
int count, int copy)
{
struct target_iovec *target_vec;
abi_ulong base;
int i;
target_vec = lock_user(VERIFY_READ, target_addr, count * sizeof(struct target_iovec), 1);
if (!target_vec)
return -TARGET_EFAULT;
for(i = 0;i < count; i++) {
base = tswapl(target_vec[i].iov_base);
vec[i].iov_len = tswapl(target_vec[i].iov_len);
if (vec[i].iov_len != 0) {
vec[i].iov_base = lock_user(type, base, vec[i].iov_len, copy);
/* Don't check lock_user return value. We must call writev even
if a element has invalid base address. */
} else {
/* zero length pointer is ignored */
vec[i].iov_base = NULL;
}
}
unlock_user (target_vec, target_addr, 0);
return 0;
}
static abi_long unlock_iovec(struct iovec *vec, abi_ulong target_addr,
int count, int copy)
{
struct target_iovec *target_vec;
abi_ulong base;
int i;
target_vec = lock_user(VERIFY_READ, target_addr, count * sizeof(struct target_iovec), 1);
if (!target_vec)
return -TARGET_EFAULT;
for(i = 0;i < count; i++) {
if (target_vec[i].iov_base) {
base = tswapl(target_vec[i].iov_base);
unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0);
}
}
unlock_user (target_vec, target_addr, 0);
return 0;
}
/* do_syscall() should always have a single exit point at the end so
that actions, such as logging of syscall results, can be performed.
All errnos that do_syscall() returns must be -TARGET_<errcode>. */
abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1,
abi_long arg2, abi_long arg3, abi_long arg4,
abi_long arg5, abi_long arg6)
abi_long arg5, abi_long arg6, abi_long arg7,
abi_long arg8)
{
abi_long ret;
void *p;
@ -86,6 +350,18 @@ abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1,
ret = get_errno(write(arg1, p, arg3));
unlock_user(p, arg2, 0);
break;
case TARGET_FREEBSD_NR_writev:
{
int count = arg3;
struct iovec *vec;
vec = alloca(count * sizeof(struct iovec));
if (lock_iovec(VERIFY_READ, vec, arg2, count, 1) < 0)
goto efault;
ret = get_errno(writev(arg1, vec, count));
unlock_iovec(vec, arg2, count, 0);
}
break;
case TARGET_FREEBSD_NR_open:
if (!(p = lock_user_string(arg1)))
goto efault;
@ -103,12 +379,23 @@ abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1,
case TARGET_FREEBSD_NR_mprotect:
ret = get_errno(target_mprotect(arg1, arg2, arg3));
break;
case TARGET_FREEBSD_NR_break:
ret = do_obreak(arg1);
break;
#ifdef __FreeBSD__
case TARGET_FREEBSD_NR___sysctl:
ret = do_freebsd_sysctl(arg1, arg2, arg3, arg4, arg5, arg6);
break;
#endif
case TARGET_FREEBSD_NR_sysarch:
ret = do_freebsd_sysarch(cpu_env, arg1, arg2);
break;
case TARGET_FREEBSD_NR_syscall:
case TARGET_FREEBSD_NR___syscall:
ret = do_freebsd_syscall(cpu_env,arg1 & 0xffff,arg2,arg3,arg4,arg5,arg6,0);
ret = do_freebsd_syscall(cpu_env,arg1 & 0xffff,arg2,arg3,arg4,arg5,arg6,arg7,arg8,0);
break;
default:
ret = syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
ret = get_errno(syscall(num, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8));
break;
}
fail:

6
bsd-user/syscall_defs.h
View File

@ -106,3 +106,9 @@
#include "freebsd/syscall_nr.h"
#include "netbsd/syscall_nr.h"
#include "openbsd/syscall_nr.h"
struct target_iovec {
abi_long iov_base; /* Starting address */
abi_long iov_len; /* Number of bytes */
};

18
bsd-user/x86_64/syscall.h
View File

@ -90,6 +90,24 @@ struct target_msqid64_ds {
abi_ulong __unused5;
};
/* FreeBSD sysarch(2) */
#define TARGET_FREEBSD_I386_GET_LDT 0
#define TARGET_FREEBSD_I386_SET_LDT 1
/* I386_IOPL */
#define TARGET_FREEBSD_I386_GET_IOPERM 3
#define TARGET_FREEBSD_I386_SET_IOPERM 4
/* xxxxx */
#define TARGET_FREEBSD_I386_GET_FSBASE 7
#define TARGET_FREEBSD_I386_SET_FSBASE 8
#define TARGET_FREEBSD_I386_GET_GSBASE 9
#define TARGET_FREEBSD_I386_SET_GSBASE 10
#define TARGET_FREEBSD_AMD64_GET_FSBASE 128
#define TARGET_FREEBSD_AMD64_SET_FSBASE 129
#define TARGET_FREEBSD_AMD64_GET_GSBASE 130
#define TARGET_FREEBSD_AMD64_SET_GSBASE 131
#define UNAME_MACHINE "x86_64"
#define TARGET_ARCH_SET_GS 0x1001

27
cpu-exec.c
View File

@ -805,6 +805,20 @@ static inline int handle_cpu_signal(unsigned long pc, unsigned long address,
# define TRAP_sig(context) ((context)->uc_mcontext->es.trapno)
# define ERROR_sig(context) ((context)->uc_mcontext->es.err)
# define MASK_sig(context) ((context)->uc_sigmask)
#elif defined (__NetBSD__)
# include <ucontext.h>
# define EIP_sig(context) ((context)->uc_mcontext.__gregs[_REG_EIP])
# define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO])
# define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR])
# define MASK_sig(context) ((context)->uc_sigmask)
#elif defined (__FreeBSD__) || defined(__DragonFly__)
# include <ucontext.h>
# define EIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.mc_eip))
# define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno)
# define ERROR_sig(context) ((context)->uc_mcontext.mc_err)
# define MASK_sig(context) ((context)->uc_sigmask)
#elif defined(__OpenBSD__)
# define EIP_sig(context) ((context)->sc_eip)
# define TRAP_sig(context) ((context)->sc_trapno)
@ -821,7 +835,9 @@ int cpu_signal_handler(int host_signum, void *pinfo,
void *puc)
{
siginfo_t *info = pinfo;
#if defined(__OpenBSD__)
#if defined(__NetBSD__) || defined (__FreeBSD__) || defined(__DragonFly__)
ucontext_t *uc = puc;
#elif defined(__OpenBSD__)
struct sigcontext *uc = puc;
#else
struct ucontext *uc = puc;
@ -855,6 +871,13 @@ int cpu_signal_handler(int host_signum, void *pinfo,
#define TRAP_sig(context) ((context)->sc_trapno)
#define ERROR_sig(context) ((context)->sc_err)
#define MASK_sig(context) ((context)->sc_mask)
#elif defined (__FreeBSD__) || defined(__DragonFly__)
#include <ucontext.h>
#define PC_sig(context) (*((unsigned long*)&(context)->uc_mcontext.mc_rip))
#define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno)
#define ERROR_sig(context) ((context)->uc_mcontext.mc_err)
#define MASK_sig(context) ((context)->uc_sigmask)
#else
#define PC_sig(context) ((context)->uc_mcontext.gregs[REG_RIP])
#define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO])
@ -867,7 +890,7 @@ int cpu_signal_handler(int host_signum, void *pinfo,
{
siginfo_t *info = pinfo;
unsigned long pc;
#ifdef __NetBSD__
#if defined(__NetBSD__) || defined (__FreeBSD__) || defined(__DragonFly__)
ucontext_t *uc = puc;
#elif defined(__OpenBSD__)
struct sigcontext *uc = puc;