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Enable sigsuspend on x86-linux and ppc32-linux.

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git-svn-id: svn://svn.valgrind.org/valgrind/trunk@5819
This commit is contained in:
Tom Hughes 2006-04-03 16:38:33 +00:00
parent 59a899e771
commit 2b63758b93
4 changed files with 37 additions and 22 deletions
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1
coregrind/m_syswrap/priv_syswrap-generic.h
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@ -170,7 +170,6 @@ DECL_TEMPLATE(generic, sys_newfstat); // * P (SVr4,BSD4.3)
// For the remainder, not really sure yet
DECL_TEMPLATE(generic, sys_ptrace); // (x86?) (almost-P)
DECL_TEMPLATE(generic, sys_sigsuspend); // POSIX, but L (proto varies across archs)
DECL_TEMPLATE(generic, sys_setrlimit); // SVr4, 4.3BSD
DECL_TEMPLATE(generic, sys_ioctl); // x86? (various)
DECL_TEMPLATE(generic, sys_old_getrlimit); // SVr4, 4.3BSD L?

18
coregrind/m_syswrap/syswrap-generic.c
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@ -5290,24 +5290,6 @@ PRE(sys_pause)
PRE_REG_READ0(long, "pause");
}
//zz // XXX: x86-specific
//zz PRE(sys_sigsuspend, SfMayBlock)
//zz {
//zz /* The C library interface to sigsuspend just takes a pointer to
//zz a signal mask but this system call has three arguments - the first
//zz two don't appear to be used by the kernel and are always passed as
//zz zero by glibc and the third is the first word of the signal mask
//zz so only 32 signals are supported.
//zz
//zz In fact glibc normally uses rt_sigsuspend if it is available as
//zz that takes a pointer to the signal mask so supports more signals.
//zz */
//zz PRINT("sys_sigsuspend ( %d, %d, %d )", ARG1,ARG2,ARG3 );
//zz PRE_REG_READ3(int, "sigsuspend",
//zz int, history0, int, history1,
//zz vki_old_sigset_t, mask);
//zz }
// XXX: x86-specific
PRE(sys_sigaltstack)
{

19
coregrind/m_syswrap/syswrap-ppc32-linux.c
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@ -392,6 +392,7 @@ DECL_TEMPLATE(ppc32_linux, sys_clone);
DECL_TEMPLATE(ppc32_linux, sys_sigreturn);
DECL_TEMPLATE(ppc32_linux, sys_rt_sigreturn);
DECL_TEMPLATE(ppc32_linux, sys_sigaction);
DECL_TEMPLATE(ppc32_linux, sys_sigsuspend);
PRE(sys_socketcall)
{
@ -1424,6 +1425,20 @@ POST(sys_sigaction)
POST_MEM_WRITE( ARG3, sizeof(struct vki_old_sigaction));
}
PRE(sys_sigsuspend)
{
/* The C library interface to sigsuspend just takes a pointer to
a signal mask but this system call only takes the first word of
the signal mask as an argument so only 32 signals are supported.
In fact glibc normally uses rt_sigsuspend if it is available as
that takes a pointer to the signal mask so supports more signals.
*/
*flags |= SfMayBlock;
PRINT("sys_sigsuspend ( %d )", ARG1 );
PRE_REG_READ1(int, "sigsuspend", vki_old_sigset_t, mask);
}
#undef PRE
#undef POST
@ -1461,7 +1476,7 @@ const SyscallTableEntry ML_(syscall_table)[] = {
GENX_(__NR_execve, sys_execve), // 11
GENX_(__NR_chdir, sys_chdir), // 12
GENXY(__NR_time, sys_time), // 13
//.. GENX_(__NR_mknod, sys_mknod), // 14
GENX_(__NR_mknod, sys_mknod), // 14
//..
GENX_(__NR_chmod, sys_chmod), // 15
//.. LINX_(__NR_lchown, sys_lchown16), // 16 ## P
@ -1531,7 +1546,7 @@ const SyscallTableEntry ML_(syscall_table)[] = {
//..
//.. LINX_(__NR_setreuid, sys_setreuid16), // 70
//.. LINX_(__NR_setregid, sys_setregid16), // 71
//.. GENX_(__NR_sigsuspend, sys_sigsuspend), // 72
PLAX_(__NR_sigsuspend, sys_sigsuspend), // 72
//.. LINXY(__NR_sigpending, sys_sigpending), // 73
//.. // (__NR_sethostname, sys_sethostname), // 74 */*
//..

21
coregrind/m_syswrap/syswrap-x86-linux.c
View File

@ -772,6 +772,7 @@ DECL_TEMPLATE(x86_linux, sys_set_thread_area);
DECL_TEMPLATE(x86_linux, sys_get_thread_area);
DECL_TEMPLATE(x86_linux, sys_ptrace);
DECL_TEMPLATE(x86_linux, sys_sigaction);
DECL_TEMPLATE(x86_linux, sys_sigsuspend);
DECL_TEMPLATE(x86_linux, old_select);
DECL_TEMPLATE(x86_linux, sys_vm86old);
DECL_TEMPLATE(x86_linux, sys_vm86);
@ -1694,6 +1695,24 @@ POST(sys_sigaction)
POST_MEM_WRITE( ARG3, sizeof(struct vki_old_sigaction));
}
PRE(sys_sigsuspend)
{
/* The C library interface to sigsuspend just takes a pointer to
a signal mask but this system call has three arguments - the first
two don't appear to be used by the kernel and are always passed as
zero by glibc and the third is the first word of the signal mask
so only 32 signals are supported.
In fact glibc normally uses rt_sigsuspend if it is available as
that takes a pointer to the signal mask so supports more signals.
*/
*flags |= SfMayBlock;
PRINT("sys_sigsuspend ( %d, %d, %d )", ARG1,ARG2,ARG3 );
PRE_REG_READ3(int, "sigsuspend",
int, history0, int, history1,
vki_old_sigset_t, mask);
}
PRE(sys_vm86old)
{
PRINT("sys_vm86old ( %p )", ARG1);
@ -1863,7 +1882,7 @@ const SyscallTableEntry ML_(syscall_table)[] = {
//zz
LINX_(__NR_setreuid, sys_setreuid16), // 70
LINX_(__NR_setregid, sys_setregid16), // 71
//zz GENX_(__NR_sigsuspend, sys_sigsuspend), // 72
PLAX_(__NR_sigsuspend, sys_sigsuspend), // 72
LINXY(__NR_sigpending, sys_sigpending), // 73
//zz // (__NR_sethostname, sys_sethostname), // 74 */*
//zz