Move sigreturn/rt_sigreturn parser to a separate file
* sigreturn.c: New file. * Makefile.am (strace_SOURCES): Add it. * defs.h (sprintsigmask_n): New prototype. (tprintsigmask_addr): New macro. * signal.c (sprintsigmask_n): Make global. (tprintsigmask_addr): Remove. (sys_sigreturn): Move to sigreturn.c.
This commit is contained in:
parent
48f0890953
commit
74219ea36f
@ -93,6 +93,7 @@ strace_SOURCES = \
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scsi.c \
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seccomp.c \
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signal.c \
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sigreturn.c \
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sock.c \
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socketutils.c \
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sram_alloc.c \
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3
defs.h
3
defs.h
@ -501,6 +501,9 @@ extern void printrusage32(struct tcb *, long);
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#endif
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extern void printuid(const char *, const unsigned int);
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extern void print_sigset_addr_len(struct tcb *, long, long);
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extern const char *sprintsigmask_n(const char *, const void *, unsigned int);
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#define tprintsigmask_addr(prefix, mask) \
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tprints(sprintsigmask_n((prefix), (mask), sizeof(mask)))
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extern void printsignal(int);
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extern void tprint_iov(struct tcb *, unsigned long, unsigned long, int decode_iov);
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extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long, int decode_iov, unsigned long);
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255
signal.c
255
signal.c
@ -32,41 +32,12 @@
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*/
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#include "defs.h"
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#include <fcntl.h>
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#include "regs.h"
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#include "ptrace.h"
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#if defined(SPARC) || defined(SPARC64) || defined(MIPS)
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typedef struct {
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struct pt_regs si_regs;
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int si_mask;
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} m_siginfo_t;
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#elif defined HAVE_ASM_SIGCONTEXT_H
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# if !defined(IA64) && !defined(X86_64) && !defined(X32)
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# include <asm/sigcontext.h>
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# endif
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#else /* !HAVE_ASM_SIGCONTEXT_H */
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# if defined M68K && !defined HAVE_STRUCT_SIGCONTEXT
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struct sigcontext {
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unsigned long sc_mask;
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unsigned long sc_usp;
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unsigned long sc_d0;
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unsigned long sc_d1;
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unsigned long sc_a0;
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unsigned long sc_a1;
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unsigned short sc_sr;
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unsigned long sc_pc;
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unsigned short sc_formatvec;
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};
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# endif /* M68K */
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#endif /* !HAVE_ASM_SIGCONTEXT_H */
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#ifndef NSIG
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# warning: NSIG is not defined, using 32
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# warning NSIG is not defined, using 32
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# define NSIG 32
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#elif NSIG < 32
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# error: NSIG < 32
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# error NSIG < 32
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#endif
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/* The libc headers do not define this constant since it should only be
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@ -181,7 +152,7 @@ popcount32(const uint32_t *a, unsigned int size)
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return count;
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}
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static const char *
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const char *
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sprintsigmask_n(const char *prefix, const void *sig_mask, unsigned int bytes)
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{
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/*
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@ -239,9 +210,6 @@ sprintsigmask_n(const char *prefix, const void *sig_mask, unsigned int bytes)
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return outstr;
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}
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#define tprintsigmask_addr(prefix, mask) \
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tprints(sprintsigmask_n((prefix), (mask), sizeof(mask)))
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#define sprintsigmask_val(prefix, mask) \
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sprintsigmask_n((prefix), &(mask), sizeof(mask))
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@ -695,223 +663,6 @@ sys_signal(struct tcb *tcp)
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#endif /* HAVE_SIGACTION */
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int
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sys_sigreturn(struct tcb *tcp)
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{
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#if defined AARCH64 || defined ARM
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if (entering(tcp)) {
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# define SIZEOF_STRUCT_SIGINFO 128
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# define SIZEOF_STRUCT_SIGCONTEXT (21 * 4)
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# define OFFSETOF_STRUCT_UCONTEXT_UC_SIGMASK (5 * 4 + SIZEOF_STRUCT_SIGCONTEXT)
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const long addr =
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# ifdef AARCH64
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current_personality == 0 ?
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(*aarch64_sp_ptr + SIZEOF_STRUCT_SIGINFO +
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offsetof(struct ucontext, uc_sigmask)) :
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# endif
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(*arm_sp_ptr +
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OFFSETOF_STRUCT_UCONTEXT_UC_SIGMASK);
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tprints("{mask=");
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print_sigset_addr_len(tcp, addr, NSIG / 8);
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tprints("}");
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}
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#elif defined(S390) || defined(S390X)
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if (entering(tcp)) {
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long mask[NSIG / 8 / sizeof(long)];
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tprints("{mask=");
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const long addr = *s390_frame_ptr + __SIGNAL_FRAMESIZE;
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if (umove(tcp, addr, &mask) < 0) {
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tprintf("%#lx", addr);
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} else {
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# ifdef S390
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long v = mask[0];
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mask[0] = mask[1];
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mask[1] = v;
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# endif
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tprintsigmask_addr("", mask);
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}
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tprints("}");
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}
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#elif defined I386 || defined X86_64 || defined X32
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if (entering(tcp)) {
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# ifndef I386
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if (current_personality != 1) {
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const unsigned long addr =
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(unsigned long) *x86_64_rsp_ptr +
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offsetof(struct ucontext, uc_sigmask);
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tprints("{mask=");
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print_sigset_addr_len(tcp, addr, NSIG / 8);
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tprints("}");
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return 0;
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}
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# endif
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/*
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* On i386, sigcontext is followed on stack by struct fpstate
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* and after it an additional u32 extramask which holds
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* upper half of the mask.
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*/
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struct {
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uint32_t struct_sigcontext_padding1[20];
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uint32_t oldmask;
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uint32_t struct_sigcontext_padding2;
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uint32_t struct_fpstate_padding[156];
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uint32_t extramask;
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} frame;
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tprints("{mask=");
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if (umove(tcp, *i386_esp_ptr, &frame) < 0) {
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tprintf("%#lx", (unsigned long) *i386_esp_ptr);
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} else {
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uint32_t mask[2] = { frame.oldmask, frame.extramask };
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tprintsigmask_addr("", mask);
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}
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tprints("}");
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}
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#elif defined(IA64)
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if (entering(tcp)) {
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/* offsetof(struct sigframe, sc) */
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# define OFFSETOF_STRUCT_SIGFRAME_SC 0xA0
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const long addr = *ia64_frame_ptr + 16 +
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OFFSETOF_STRUCT_SIGFRAME_SC +
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offsetof(struct sigcontext, sc_mask);
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tprints("{mask=");
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print_sigset_addr_len(tcp, addr, NSIG / 8);
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tprints("}");
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}
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#elif defined(POWERPC)
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if (entering(tcp)) {
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long esp = ppc_regs.gpr[1];
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struct sigcontext sc;
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/* Skip dummy stack frame. */
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#ifdef POWERPC64
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if (current_personality == 0)
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esp += 128;
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else
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#endif
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esp += 64;
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tprints("{mask=");
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if (umove(tcp, esp, &sc) < 0) {
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tprintf("%#lx", esp);
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} else {
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unsigned long mask[NSIG / 8 / sizeof(long)];
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#ifdef POWERPC64
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mask[0] = sc.oldmask | (sc._unused[3] << 32);
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#else
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mask[0] = sc.oldmask;
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mask[1] = sc._unused[3];
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#endif
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tprintsigmask_val("", mask);
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}
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tprints("}");
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}
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#elif defined(M68K)
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if (entering(tcp)) {
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long addr;
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if (upeek(tcp->pid, 4*PT_USP, &addr) < 0)
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return 0;
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addr += offsetof(struct sigcontext, sc_mask);
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tprints("{mask=");
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print_sigset_addr_len(tcp, addr, NSIG / 8);
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tprints("}");
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}
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#elif defined(ALPHA)
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if (entering(tcp)) {
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long addr;
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if (upeek(tcp->pid, REG_FP, &addr) < 0)
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return 0;
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addr += offsetof(struct sigcontext, sc_mask);
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tprints("{mask=");
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print_sigset_addr_len(tcp, addr, NSIG / 8);
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tprints("}");
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}
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#elif defined(SPARC) || defined(SPARC64)
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if (entering(tcp)) {
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long fp = sparc_regs.u_regs[U_REG_FP] + sizeof(struct sparc_stackf);
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struct {
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m_siginfo_t si;
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void *fpu_save;
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long insns[2] __attribute__ ((aligned (8)));
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unsigned int extramask[NSIG / 8 / sizeof(int) - 1];
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} frame;
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tprints("{mask=");
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if (umove(tcp, fp, &frame) < 0) {
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tprintf("%#lx", fp);
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} else {
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unsigned int mask[NSIG / 8 / sizeof(int)];
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mask[0] = frame.si.si_mask;
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memcpy(mask + 1, frame.extramask, sizeof(frame.extramask));
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tprintsigmask_val("", mask);
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}
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tprints("}");
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}
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#elif defined MIPS
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if (entering(tcp)) {
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# if defined LINUX_MIPSO32
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/*
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* offsetof(struct sigframe, sf_mask) ==
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* sizeof(sf_ass) + sizeof(sf_pad) + sizeof(struct sigcontext)
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*/
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const long addr = mips_REG_SP + 6 * 4 +
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sizeof(struct sigcontext);
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# else
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/*
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* This decodes rt_sigreturn.
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* The 64-bit ABIs do not have sigreturn.
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*
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* offsetof(struct rt_sigframe, rs_uc) ==
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* sizeof(sf_ass) + sizeof(sf_pad) + sizeof(struct siginfo)
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*/
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const long addr = mips_REG_SP + 6 * 4 + 128 +
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offsetof(struct ucontext, uc_sigmask);
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# endif
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tprints("{mask=");
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print_sigset_addr_len(tcp, addr, NSIG / 8);
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tprints("}");
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}
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#elif defined(CRISV10) || defined(CRISV32)
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if (entering(tcp)) {
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long regs[PT_MAX+1];
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if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long)regs) < 0) {
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perror_msg("sigreturn: PTRACE_GETREGS");
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return 0;
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}
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const long addr = regs[PT_USP] +
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offsetof(struct sigcontext, oldmask);
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tprints("{mask=");
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print_sigset_addr_len(tcp, addr, NSIG / 8);
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tprints("}");
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}
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#elif defined(TILE)
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if (entering(tcp)) {
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/* offset of ucontext in the kernel's sigframe structure */
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# define SIGFRAME_UC_OFFSET C_ABI_SAVE_AREA_SIZE + sizeof(siginfo_t)
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const long addr = tile_regs.sp + SIGFRAME_UC_OFFSET +
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offsetof(struct ucontext, uc_sigmask);
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tprints("{mask=");
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print_sigset_addr_len(tcp, addr, NSIG / 8);
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tprints("}");
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}
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#elif defined(MICROBLAZE)
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/* TODO: Verify that this is correct... */
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if (entering(tcp)) {
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long addr;
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/* Read r1, the stack pointer. */
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if (upeek(tcp->pid, 1 * 4, &addr) < 0)
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return 0;
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addr += offsetof(struct sigcontext, oldmask);
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tprints("{mask=");
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print_sigset_addr_len(tcp, addr, NSIG / 8);
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tprints("}");
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}
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#else
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# warning sigreturn/rt_sigreturn signal mask decoding is not implemented for this architecture
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#endif
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return 0;
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}
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int
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sys_siggetmask(struct tcb *tcp)
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{
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231
sigreturn.c
Normal file
231
sigreturn.c
Normal file
@ -0,0 +1,231 @@
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#include "defs.h"
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#include "regs.h"
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#include "ptrace.h"
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#if defined HAVE_ASM_SIGCONTEXT_H && !defined HAVE_STRUCT_SIGCONTEXT
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# include <asm/sigcontext.h>
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#endif
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#ifndef NSIG
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# warning NSIG is not defined, using 32
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# define NSIG 32
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#elif NSIG < 32
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# error NSIG < 32
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#endif
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int
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sys_sigreturn(struct tcb *tcp)
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{
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#if defined AARCH64 || defined ARM
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if (entering(tcp)) {
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# define SIZEOF_STRUCT_SIGINFO 128
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# define SIZEOF_STRUCT_SIGCONTEXT (21 * 4)
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# define OFFSETOF_STRUCT_UCONTEXT_UC_SIGMASK (5 * 4 + SIZEOF_STRUCT_SIGCONTEXT)
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const long addr =
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# ifdef AARCH64
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current_personality == 0 ?
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(*aarch64_sp_ptr + SIZEOF_STRUCT_SIGINFO +
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offsetof(struct ucontext, uc_sigmask)) :
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# endif
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(*arm_sp_ptr +
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OFFSETOF_STRUCT_UCONTEXT_UC_SIGMASK);
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tprints("{mask=");
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print_sigset_addr_len(tcp, addr, NSIG / 8);
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tprints("}");
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}
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#elif defined(S390) || defined(S390X)
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if (entering(tcp)) {
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long mask[NSIG / 8 / sizeof(long)];
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tprints("{mask=");
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const long addr = *s390_frame_ptr + __SIGNAL_FRAMESIZE;
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if (umove(tcp, addr, &mask) < 0) {
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tprintf("%#lx", addr);
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} else {
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# ifdef S390
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long v = mask[0];
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mask[0] = mask[1];
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mask[1] = v;
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# endif
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tprintsigmask_addr("", mask);
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}
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tprints("}");
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}
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#elif defined I386 || defined X86_64 || defined X32
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if (entering(tcp)) {
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# ifndef I386
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if (current_personality != 1) {
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const unsigned long addr =
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(unsigned long) *x86_64_rsp_ptr +
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offsetof(struct ucontext, uc_sigmask);
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tprints("{mask=");
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print_sigset_addr_len(tcp, addr, NSIG / 8);
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tprints("}");
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return 0;
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}
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# endif
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/*
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* On i386, sigcontext is followed on stack by struct fpstate
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* and after it an additional u32 extramask which holds
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* upper half of the mask.
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*/
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struct {
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uint32_t struct_sigcontext_padding1[20];
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uint32_t oldmask;
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uint32_t struct_sigcontext_padding2;
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uint32_t struct_fpstate_padding[156];
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uint32_t extramask;
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} frame;
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tprints("{mask=");
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if (umove(tcp, *i386_esp_ptr, &frame) < 0) {
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tprintf("%#lx", (unsigned long) *i386_esp_ptr);
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} else {
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uint32_t mask[2] = { frame.oldmask, frame.extramask };
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tprintsigmask_addr("", mask);
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}
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tprints("}");
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}
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#elif defined(IA64)
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if (entering(tcp)) {
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/* offsetof(struct sigframe, sc) */
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# define OFFSETOF_STRUCT_SIGFRAME_SC 0xA0
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const long addr = *ia64_frame_ptr + 16 +
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OFFSETOF_STRUCT_SIGFRAME_SC +
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offsetof(struct sigcontext, sc_mask);
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tprints("{mask=");
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print_sigset_addr_len(tcp, addr, NSIG / 8);
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tprints("}");
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}
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#elif defined(POWERPC)
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if (entering(tcp)) {
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long esp = ppc_regs.gpr[1];
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struct sigcontext sc;
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/* Skip dummy stack frame. */
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#ifdef POWERPC64
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if (current_personality == 0)
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esp += 128;
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else
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#endif
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esp += 64;
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tprints("{mask=");
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if (umove(tcp, esp, &sc) < 0) {
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tprintf("%#lx", esp);
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} else {
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unsigned long mask[NSIG / 8 / sizeof(long)];
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#ifdef POWERPC64
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mask[0] = sc.oldmask | (sc._unused[3] << 32);
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#else
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mask[0] = sc.oldmask;
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mask[1] = sc._unused[3];
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#endif
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tprintsigmask_addr("", mask);
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}
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tprints("}");
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}
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#elif defined(M68K)
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if (entering(tcp)) {
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long addr;
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if (upeek(tcp->pid, 4*PT_USP, &addr) < 0)
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return 0;
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tprints("{mask=");
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print_sigset_addr_len(tcp, addr, NSIG / 8);
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tprints("}");
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}
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#elif defined(ALPHA)
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if (entering(tcp)) {
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long addr;
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if (upeek(tcp->pid, REG_FP, &addr) < 0)
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return 0;
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addr += offsetof(struct sigcontext, sc_mask);
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tprints("{mask=");
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print_sigset_addr_len(tcp, addr, NSIG / 8);
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tprints("}");
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}
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#elif defined(SPARC) || defined(SPARC64)
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if (entering(tcp)) {
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long fp = sparc_regs.u_regs[U_REG_FP] + sizeof(struct sparc_stackf);
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struct {
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struct pt_regs si_regs;
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int si_mask;
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void *fpu_save;
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long insns[2] __attribute__ ((aligned (8)));
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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_mask;
|
||||
memcpy(mask + 1, frame.extramask, sizeof(frame.extramask));
|
||||
tprintsigmask_addr("", 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;
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user