*/
#include "defs.h"
-#include <fcntl.h>
-
-#include "regs.h"
-#include "ptrace.h"
-
-#if defined(SPARC) || defined(SPARC64) || defined(MIPS)
-typedef struct {
- struct pt_regs si_regs;
- int si_mask;
-} m_siginfo_t;
-#elif defined HAVE_ASM_SIGCONTEXT_H
-# if !defined(IA64) && !defined(X86_64) && !defined(X32)
-# include <asm/sigcontext.h>
-# endif
-#else /* !HAVE_ASM_SIGCONTEXT_H */
-# if defined M68K && !defined HAVE_STRUCT_SIGCONTEXT
-struct sigcontext {
- unsigned long sc_mask;
- unsigned long sc_usp;
- unsigned long sc_d0;
- unsigned long sc_d1;
- unsigned long sc_a0;
- unsigned long sc_a1;
- unsigned short sc_sr;
- unsigned long sc_pc;
- unsigned short sc_formatvec;
-};
-# endif /* M68K */
-#endif /* !HAVE_ASM_SIGCONTEXT_H */
#ifndef NSIG
-# warning: NSIG is not defined, using 32
+# warning NSIG is not defined, using 32
# define NSIG 32
#elif NSIG < 32
-# error: NSIG < 32
+# error NSIG < 32
#endif
/* The libc headers do not define this constant since it should only be
# define HAVE_SA_RESTORER 1
# endif
#else /* !SA_RESTORER */
-# if defined SPARC || defined SPARC64
+# if defined SPARC || defined SPARC64 || defined M68K
# define HAVE_SA_RESTORER 1
# else
# define HAVE_SA_RESTORER 0
return count;
}
-static const char *
+const char *
sprintsigmask_n(const char *prefix, const void *sig_mask, unsigned int bytes)
{
/*
return outstr;
}
-#define tprintsigmask_addr(prefix, mask) \
- tprints(sprintsigmask_n((prefix), (mask), sizeof(mask)))
-
#define sprintsigmask_val(prefix, mask) \
sprintsigmask_n((prefix), &(mask), sizeof(mask))
tprints(sprintsigmask_n("", mask, len));
}
-#ifndef ILL_ILLOPC
-#define ILL_ILLOPC 1 /* illegal opcode */
-#define ILL_ILLOPN 2 /* illegal operand */
-#define ILL_ILLADR 3 /* illegal addressing mode */
-#define ILL_ILLTRP 4 /* illegal trap */
-#define ILL_PRVOPC 5 /* privileged opcode */
-#define ILL_PRVREG 6 /* privileged register */
-#define ILL_COPROC 7 /* coprocessor error */
-#define ILL_BADSTK 8 /* internal stack error */
-#define FPE_INTDIV 1 /* integer divide by zero */
-#define FPE_INTOVF 2 /* integer overflow */
-#define FPE_FLTDIV 3 /* floating point divide by zero */
-#define FPE_FLTOVF 4 /* floating point overflow */
-#define FPE_FLTUND 5 /* floating point underflow */
-#define FPE_FLTRES 6 /* floating point inexact result */
-#define FPE_FLTINV 7 /* floating point invalid operation */
-#define FPE_FLTSUB 8 /* subscript out of range */
-#define SEGV_MAPERR 1 /* address not mapped to object */
-#define SEGV_ACCERR 2 /* invalid permissions for mapped object */
-#define BUS_ADRALN 1 /* invalid address alignment */
-#define BUS_ADRERR 2 /* non-existant physical address */
-#define BUS_OBJERR 3 /* object specific hardware error */
-#define SYS_SECCOMP 1 /* seccomp triggered */
-#define TRAP_BRKPT 1 /* process breakpoint */
-#define TRAP_TRACE 2 /* process trace trap */
-#define CLD_EXITED 1 /* child has exited */
-#define CLD_KILLED 2 /* child was killed */
-#define CLD_DUMPED 3 /* child terminated abnormally */
-#define CLD_TRAPPED 4 /* traced child has trapped */
-#define CLD_STOPPED 5 /* child has stopped */
-#define CLD_CONTINUED 6 /* stopped child has continued */
-#define POLL_IN 1 /* data input available */
-#define POLL_OUT 2 /* output buffers available */
-#define POLL_MSG 3 /* input message available */
-#define POLL_ERR 4 /* i/o error */
-#define POLL_PRI 5 /* high priority input available */
-#define POLL_HUP 6 /* device disconnected */
-#define SI_KERNEL 0x80 /* sent by kernel */
-#define SI_USER 0 /* sent by kill, sigsend, raise */
-#define SI_QUEUE -1 /* sent by sigqueue */
-#define SI_TIMER -2 /* sent by timer expiration */
-#define SI_MESGQ -3 /* sent by real time mesq state change */
-#define SI_ASYNCIO -4 /* sent by AIO completion */
-#define SI_SIGIO -5 /* sent by SIGIO */
-#define SI_TKILL -6 /* sent by tkill */
-#define SI_DETHREAD -7 /* sent by execve killing subsidiary threads */
-#define SI_ASYNCNL -60 /* sent by asynch name lookup completion */
-#endif
-
-#ifndef SI_FROMUSER
-# define SI_FROMUSER(sip) ((sip)->si_code <= 0)
-#endif
-
-#include "xlat/siginfo_codes.h"
-#include "xlat/sigill_codes.h"
-#include "xlat/sigfpe_codes.h"
-#include "xlat/sigtrap_codes.h"
-#include "xlat/sigchld_codes.h"
-#include "xlat/sigpoll_codes.h"
-#include "xlat/sigprof_codes.h"
-
-#ifdef SIGEMT
-#include "xlat/sigemt_codes.h"
-#endif
-
-#include "xlat/sigsegv_codes.h"
-#include "xlat/sigbus_codes.h"
-
-#ifndef SYS_SECCOMP
-# define SYS_SECCOMP 1
-#endif
-#include "xlat/sigsys_codes.h"
-
-static void
-printsigsource(const siginfo_t *sip)
-{
- tprintf(", si_pid=%lu, si_uid=%lu",
- (unsigned long) sip->si_pid,
- (unsigned long) sip->si_uid);
-}
-
-static void
-printsigval(const siginfo_t *sip, int verbose)
-{
- if (!verbose)
- tprints(", ...");
- else
- tprintf(", si_value={int=%u, ptr=%#lx}",
- sip->si_int,
- (unsigned long) sip->si_ptr);
-}
-
-void
-printsiginfo(const siginfo_t *sip, int verbose)
-{
- const char *code;
-
- if (sip->si_signo == 0) {
- tprints("{}");
- return;
- }
- tprints("{si_signo=");
- printsignal(sip->si_signo);
- code = xlookup(siginfo_codes, sip->si_code);
- if (!code) {
- switch (sip->si_signo) {
- case SIGTRAP:
- code = xlookup(sigtrap_codes, sip->si_code);
- break;
- case SIGCHLD:
- code = xlookup(sigchld_codes, sip->si_code);
- break;
- case SIGPOLL:
- code = xlookup(sigpoll_codes, sip->si_code);
- break;
- case SIGPROF:
- code = xlookup(sigprof_codes, sip->si_code);
- break;
- case SIGILL:
- code = xlookup(sigill_codes, sip->si_code);
- break;
-#ifdef SIGEMT
- case SIGEMT:
- code = xlookup(sigemt_codes, sip->si_code);
- break;
-#endif
- case SIGFPE:
- code = xlookup(sigfpe_codes, sip->si_code);
- break;
- case SIGSEGV:
- code = xlookup(sigsegv_codes, sip->si_code);
- break;
- case SIGBUS:
- code = xlookup(sigbus_codes, sip->si_code);
- break;
- case SIGSYS:
- code = xlookup(sigsys_codes, sip->si_code);
- break;
- }
- }
- if (code)
- tprintf(", si_code=%s", code);
- else
- tprintf(", si_code=%#x", sip->si_code);
-#ifdef SI_NOINFO
- if (sip->si_code != SI_NOINFO)
-#endif
- {
- if (sip->si_errno) {
- tprints(", si_errno=");
- if ((unsigned) sip->si_errno < nerrnos
- && errnoent[sip->si_errno])
- tprints(errnoent[sip->si_errno]);
- else
- tprintf("%d", sip->si_errno);
- }
-#ifdef SI_FROMUSER
- if (SI_FROMUSER(sip)) {
- switch (sip->si_code) {
-#ifdef SI_USER
- case SI_USER:
- printsigsource(sip);
- break;
-#endif
-#ifdef SI_TKILL
- case SI_TKILL:
- printsigsource(sip);
- break;
-#endif
-#if defined SI_TIMER \
- && defined HAVE_SIGINFO_T_SI_TIMERID && defined HAVE_SIGINFO_T_SI_OVERRUN
- case SI_TIMER:
- tprintf(", si_timerid=%#x, si_overrun=%d",
- sip->si_timerid, sip->si_overrun);
- printsigval(sip, verbose);
- break;
-#endif
- default:
- printsigsource(sip);
- if (sip->si_ptr)
- printsigval(sip, verbose);
- break;
- }
- }
- else
-#endif /* SI_FROMUSER */
- {
- switch (sip->si_signo) {
- case SIGCHLD:
- printsigsource(sip);
- tprints(", si_status=");
- if (sip->si_code == CLD_EXITED)
- tprintf("%d", sip->si_status);
- else
- printsignal(sip->si_status);
- if (!verbose)
- tprints(", ...");
- else
- tprintf(", si_utime=%llu, si_stime=%llu",
- (unsigned long long) sip->si_utime,
- (unsigned long long) sip->si_stime);
- break;
- case SIGILL: case SIGFPE:
- case SIGSEGV: case SIGBUS:
- tprintf(", si_addr=%#lx",
- (unsigned long) sip->si_addr);
- break;
- case SIGPOLL:
- switch (sip->si_code) {
- case POLL_IN: case POLL_OUT: case POLL_MSG:
- tprintf(", si_band=%ld",
- (long) sip->si_band);
- break;
- }
- break;
-#ifdef HAVE_SIGINFO_T_SI_SYSCALL
- case SIGSYS:
- tprintf(", si_call_addr=%#lx, si_syscall=%d, si_arch=%u",
- (unsigned long) sip->si_call_addr,
- sip->si_syscall, sip->si_arch);
- break;
-#endif
- default:
- if (sip->si_pid || sip->si_uid)
- printsigsource(sip);
- if (sip->si_ptr)
- printsigval(sip, verbose);
- }
- }
- }
- tprints("}");
-}
-
-void
-printsiginfo_at(struct tcb *tcp, long addr)
-{
- siginfo_t si;
- if (!addr) {
- tprints("NULL");
- return;
- }
- if (syserror(tcp)) {
- tprintf("%#lx", addr);
- return;
- }
- if (umove(tcp, addr, &si) < 0) {
- tprints("{???}");
- return;
- }
- printsiginfo(&si, verbose(tcp));
-}
-
-int
-sys_sigsetmask(struct tcb *tcp)
+SYS_FUNC(sigsetmask)
{
if (entering(tcp)) {
tprintsigmask_val("", tcp->u_arg[0]);
tprints("}");
}
-int
-sys_sigaction(struct tcb *tcp)
+SYS_FUNC(sigaction)
{
if (entering(tcp)) {
printsignal(tcp->u_arg[0]);
return 0;
}
-int
-sys_signal(struct tcb *tcp)
+SYS_FUNC(signal)
{
if (entering(tcp)) {
printsignal(tcp->u_arg[0]);
#endif /* HAVE_SIGACTION */
-int
-sys_sigreturn(struct tcb *tcp)
-{
-#if defined AARCH64 || defined ARM
- if (entering(tcp)) {
-# define SIZEOF_STRUCT_SIGINFO 128
-# define SIZEOF_STRUCT_SIGCONTEXT (21 * 4)
-# define OFFSETOF_STRUCT_UCONTEXT_UC_SIGMASK (5 * 4 + SIZEOF_STRUCT_SIGCONTEXT)
- const long addr =
-# ifdef AARCH64
- current_personality == 0 ?
- (*aarch64_sp_ptr + SIZEOF_STRUCT_SIGINFO +
- offsetof(struct ucontext, uc_sigmask)) :
-# endif
- (*arm_sp_ptr +
- OFFSETOF_STRUCT_UCONTEXT_UC_SIGMASK);
- tprints("{mask=");
- print_sigset_addr_len(tcp, addr, NSIG / 8);
- tprints("}");
- }
-#elif defined(S390) || defined(S390X)
- if (entering(tcp)) {
- long usp;
- long mask[NSIG / 8 / sizeof(long)];
- if (upeek(tcp->pid, PT_GPR15, &usp) < 0)
- return 0;
- tprints("{mask=");
- const long addr = usp + __SIGNAL_FRAMESIZE;
- if (umove(tcp, addr, &mask) < 0) {
- tprintf("%#lx", addr);
- } else {
-# ifdef S390
- usp = mask[0];
- mask[0] = mask[1];
- mask[1] = usp;
-# endif
- tprintsigmask_addr("", mask);
- }
- tprints("}");
- }
-#elif defined I386 || defined X86_64 || defined X32
- if (entering(tcp)) {
-# ifndef I386
- if (current_personality != 1) {
- const unsigned long addr =
- (unsigned long) *x86_64_rsp_ptr +
- offsetof(struct ucontext, uc_sigmask);
- tprints("{mask=");
- print_sigset_addr_len(tcp, addr, NSIG / 8);
- tprints("}");
- return 0;
- }
-# endif
- /*
- * On i386, sigcontext is followed on stack by struct fpstate
- * and after it an additional u32 extramask which holds
- * upper half of the mask.
- */
- struct {
- uint32_t struct_sigcontext_padding1[20];
- uint32_t oldmask;
- uint32_t struct_sigcontext_padding2;
- uint32_t struct_fpstate_padding[156];
- uint32_t extramask;
- } frame;
- tprints("{mask=");
- if (umove(tcp, *i386_esp_ptr, &frame) < 0) {
- tprintf("%#lx", (unsigned long) *i386_esp_ptr);
- } else {
- uint32_t mask[2] = { frame.oldmask, frame.extramask };
- tprintsigmask_addr("", mask);
- }
- tprints("}");
- }
-#elif defined(IA64)
- if (entering(tcp)) {
- long addr;
- if (upeek(tcp->pid, PT_R12, &addr) < 0)
- return 0;
- /* offsetof(struct sigframe, sc) */
-# define OFFSETOF_STRUCT_SIGFRAME_SC 0xA0
- addr += 16 + OFFSETOF_STRUCT_SIGFRAME_SC +
- offsetof(struct sigcontext, sc_mask);
- tprints("{mask=");
- print_sigset_addr_len(tcp, addr, NSIG / 8);
- tprints("}");
- }
-#elif defined(POWERPC)
- if (entering(tcp)) {
- long esp = ppc_regs.gpr[1];
- struct sigcontext sc;
-
- /* Skip dummy stack frame. */
-#ifdef POWERPC64
- if (current_personality == 0)
- esp += 128;
- else
-#endif
- esp += 64;
-
- tprints("{mask=");
- if (umove(tcp, esp, &sc) < 0) {
- tprintf("%#lx", esp);
- } else {
- unsigned long mask[NSIG / 8 / sizeof(long)];
-#ifdef POWERPC64
- mask[0] = sc.oldmask | (sc._unused[3] << 32);
-#else
- mask[0] = sc.oldmask;
- mask[1] = sc._unused[3];
-#endif
- tprintsigmask_val("", mask);
- }
- tprints("}");
- }
-#elif defined(M68K)
- if (entering(tcp)) {
- long addr;
- if (upeek(tcp->pid, 4*PT_USP, &addr) < 0)
- return 0;
- addr += offsetof(struct sigcontext, sc_mask);
- tprints("{mask=");
- print_sigset_addr_len(tcp, addr, NSIG / 8);
- tprints("}");
- }
-#elif defined(ALPHA)
- if (entering(tcp)) {
- long addr;
- if (upeek(tcp->pid, REG_FP, &addr) < 0)
- return 0;
- addr += offsetof(struct sigcontext, sc_mask);
- tprints("{mask=");
- print_sigset_addr_len(tcp, addr, NSIG / 8);
- tprints("}");
- }
-#elif defined(SPARC) || defined(SPARC64)
- if (entering(tcp)) {
- long fp = sparc_regs.u_regs[U_REG_FP] + sizeof(struct sparc_stackf);
- struct {
- m_siginfo_t si;
- void *fpu_save;
- long insns[2] __attribute__ ((aligned (8)));
- unsigned int extramask[NSIG / 8 / sizeof(int) - 1];
- } frame;
-
- tprints("{mask=");
- if (umove(tcp, fp, &frame) < 0) {
- tprintf("%#lx", fp);
- } else {
- unsigned int mask[NSIG / 8 / sizeof(int)];
-
- mask[0] = frame.si.si_mask;
- memcpy(mask + 1, frame.extramask, sizeof(frame.extramask));
- tprintsigmask_val("", mask);
- }
- tprints("}");
- }
-#elif defined MIPS
- if (entering(tcp)) {
-# if defined LINUX_MIPSO32
- /*
- * offsetof(struct sigframe, sf_mask) ==
- * sizeof(sf_ass) + sizeof(sf_pad) + sizeof(struct sigcontext)
- */
- const long addr = mips_REG_SP + 6 * 4 +
- sizeof(struct sigcontext);
-# else
- /*
- * This decodes rt_sigreturn.
- * The 64-bit ABIs do not have sigreturn.
- *
- * offsetof(struct rt_sigframe, rs_uc) ==
- * sizeof(sf_ass) + sizeof(sf_pad) + sizeof(struct siginfo)
- */
- const long addr = mips_REG_SP + 6 * 4 + 128 +
- offsetof(struct ucontext, uc_sigmask);
-# endif
- tprints("{mask=");
- print_sigset_addr_len(tcp, addr, NSIG / 8);
- tprints("}");
- }
-#elif defined(CRISV10) || defined(CRISV32)
- if (entering(tcp)) {
- long regs[PT_MAX+1];
- if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long)regs) < 0) {
- perror_msg("sigreturn: PTRACE_GETREGS");
- return 0;
- }
- const long addr = regs[PT_USP] +
- offsetof(struct sigcontext, oldmask);
- tprints("{mask=");
- print_sigset_addr_len(tcp, addr, NSIG / 8);
- tprints("}");
- }
-#elif defined(TILE)
- if (entering(tcp)) {
- /* offset of ucontext in the kernel's sigframe structure */
-# define SIGFRAME_UC_OFFSET C_ABI_SAVE_AREA_SIZE + sizeof(siginfo_t)
- const long addr = tile_regs.sp + SIGFRAME_UC_OFFSET +
- offsetof(struct ucontext, uc_sigmask);
- tprints("{mask=");
- print_sigset_addr_len(tcp, addr, NSIG / 8);
- tprints("}");
- }
-#elif defined(MICROBLAZE)
- /* TODO: Verify that this is correct... */
- if (entering(tcp)) {
- long addr;
- /* Read r1, the stack pointer. */
- if (upeek(tcp->pid, 1 * 4, &addr) < 0)
- return 0;
- addr += offsetof(struct sigcontext, oldmask);
- tprints("{mask=");
- print_sigset_addr_len(tcp, addr, NSIG / 8);
- tprints("}");
- }
-#else
-# warning sigreturn/rt_sigreturn signal mask decoding is not implemented for this architecture
-#endif
- return 0;
-}
-
-int
-sys_siggetmask(struct tcb *tcp)
+SYS_FUNC(siggetmask)
{
if (exiting(tcp)) {
tcp->auxstr = sprintsigmask_val("mask ", tcp->u_rval);
return RVAL_HEX | RVAL_STR;
}
-int
-sys_sigsuspend(struct tcb *tcp)
+SYS_FUNC(sigsuspend)
{
if (entering(tcp)) {
tprintsigmask_val("", tcp->u_arg[2]);
return 0;
}
-#if !defined SS_ONSTACK
-#define SS_ONSTACK 1
-#define SS_DISABLE 2
-#endif
-
-#include "xlat/sigaltstack_flags.h"
-
-static void
-print_stack_t(struct tcb *tcp, unsigned long addr)
-{
- stack_t ss;
- int r;
-
- if (!addr) {
- tprints("NULL");
- return;
- }
-
-#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
- if (current_wordsize != sizeof(ss.ss_sp) && current_wordsize == 4) {
- struct {
- uint32_t ss_sp;
- int32_t ss_flags;
- uint32_t ss_size;
- } ss32;
- r = umove(tcp, addr, &ss32);
- if (r >= 0) {
- memset(&ss, 0, sizeof(ss));
- ss.ss_sp = (void*)(unsigned long) ss32.ss_sp;
- ss.ss_flags = ss32.ss_flags;
- ss.ss_size = (unsigned long) ss32.ss_size;
- }
- } else
-#endif
- {
- r = umove(tcp, addr, &ss);
- }
- if (r < 0) {
- tprintf("%#lx", addr);
- } else {
- tprintf("{ss_sp=%#lx, ss_flags=", (unsigned long) ss.ss_sp);
- printflags(sigaltstack_flags, ss.ss_flags, "SS_???");
- tprintf(", ss_size=%lu}", (unsigned long) ss.ss_size);
- }
-}
-
-int
-sys_sigaltstack(struct tcb *tcp)
-{
- if (entering(tcp)) {
- print_stack_t(tcp, tcp->u_arg[0]);
- }
- else {
- tprints(", ");
- print_stack_t(tcp, tcp->u_arg[1]);
- }
- return 0;
-}
-
#ifdef HAVE_SIGACTION
/* "Old" sigprocmask, which operates with word-sized signal masks */
-int
-sys_sigprocmask(struct tcb *tcp)
+SYS_FUNC(sigprocmask)
{
# ifdef ALPHA
if (entering(tcp)) {
#endif /* HAVE_SIGACTION */
-int
-sys_kill(struct tcb *tcp)
+SYS_FUNC(kill)
{
if (entering(tcp)) {
tprintf("%ld, %s",
return 0;
}
-int
-sys_tgkill(struct tcb *tcp)
+SYS_FUNC(tgkill)
{
if (entering(tcp)) {
tprintf("%ld, %ld, %s",
return 0;
}
-int
-sys_sigpending(struct tcb *tcp)
+SYS_FUNC(sigpending)
{
if (exiting(tcp)) {
if (syserror(tcp))
return 0;
}
-int
-sys_rt_sigprocmask(struct tcb *tcp)
+SYS_FUNC(rt_sigprocmask)
{
/* Note: arg[3] is the length of the sigset. Kernel requires NSIG / 8 */
if (entering(tcp)) {
tprints("}");
}
-int
-sys_rt_sigaction(struct tcb *tcp)
+SYS_FUNC(rt_sigaction)
{
if (entering(tcp)) {
printsignal(tcp->u_arg[0]);
return 0;
}
-int
-sys_rt_sigpending(struct tcb *tcp)
+SYS_FUNC(rt_sigpending)
{
if (exiting(tcp)) {
/*
return 0;
}
-int
-sys_rt_sigsuspend(struct tcb *tcp)
+SYS_FUNC(rt_sigsuspend)
{
if (entering(tcp)) {
/* NB: kernel requires arg[1] == NSIG / 8 */
printsiginfo_at(tcp, uinfo);
}
-int
-sys_rt_sigqueueinfo(struct tcb *tcp)
+SYS_FUNC(rt_sigqueueinfo)
{
if (entering(tcp)) {
tprintf("%lu, ", tcp->u_arg[0]);
return 0;
}
-int
-sys_rt_tgsigqueueinfo(struct tcb *tcp)
+SYS_FUNC(rt_tgsigqueueinfo)
{
if (entering(tcp)) {
tprintf("%lu, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
return 0;
}
-int sys_rt_sigtimedwait(struct tcb *tcp)
+SYS_FUNC(rt_sigtimedwait)
{
/* NB: kernel requires arg[3] == NSIG / 8 */
if (entering(tcp)) {
return 0;
};
-int
-sys_restart_syscall(struct tcb *tcp)
+SYS_FUNC(restart_syscall)
{
- if (entering(tcp))
- tprints("<... resuming interrupted call ...>");
+ if (entering(tcp)) {
+ tprintf("<... resuming interrupted %s ...>",
+ tcp->s_prev_ent
+ ? tcp->s_prev_ent->sys_name
+ : "system call"
+ );
+ }
return 0;
}
return 0;
}
-int
-sys_signalfd(struct tcb *tcp)
+SYS_FUNC(signalfd)
{
return do_signalfd(tcp, -1);
}
-int
-sys_signalfd4(struct tcb *tcp)
+SYS_FUNC(signalfd4)
{
return do_signalfd(tcp, 3);
}