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| author | Vineet Gupta <Vineet.Gupta1@synopsys.com> | 2013-08-16 12:47:06 +0530 |
|---|---|---|
| committer | Dmitry V. Levin <ldv@altlinux.org> | 2013-09-11 14:44:54 +0000 |
| commit | 7daacbbbe7349677476a3d2fbf174dcf86f171be (patch) | |
| tree | 7e1488f3451b29804ff007f35d5dc30594f3a4f5 /syscall.c | |
| parent | 16b9dcf8b870f47305aa2db174f5abccefb7cd94 (diff) | |
| download | strace-7daacbbbe7349677476a3d2fbf174dcf86f171be.tar.gz strace-7daacbbbe7349677476a3d2fbf174dcf86f171be.tar.bz2 strace-7daacbbbe7349677476a3d2fbf174dcf86f171be.tar.xz | |
Add support for ARC Cores from Synopsys
Take #2 on mainlining strace support for ARC (last one was 4.6 based back
in March 2011), see
http://sourceforge.net/p/strace/mailman/message/27210168/
The syscall ABI is asm-generic/unistd.h based (so no legacy syscalls),
hence very similar to metag port.
test/* all seem to work well.
* linux/arc/ioctlent.h.in: New file.
* linux/arc/syscallent.h: Likewise.
* Makefile.am (EXTRA_DIST): Add linux/arc/ioctlent.h.in and
linux/arc/syscallent.h.
* configure.ac: Add ARC to the list of supported architectures.
* defs.h: Add ARC support.
* process.c (struct_user_offsets): Likewise.
* signal.c (sys_sigreturn): Likewise.
* syscall.c (print_pc, get_regset, get_regs, get_scno, get_syscall_args,
get_syscall_result, get_error): Likewise.
* util.c (change_syscall): Likewise.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'syscall.c')
| -rw-r--r-- | syscall.c | 27 |
1 files changed, 25 insertions, 2 deletions
@@ -774,6 +774,9 @@ static struct user_gp_regs metag_regs; # define ARCH_REGS_FOR_GETREGSET metag_regs #elif defined(XTENSA) static long xtensa_a2; +# elif defined(ARC) +static struct user_regs_struct arc_regs; +# define ARCH_REGS_FOR_GETREGSET arc_regs #endif void @@ -914,6 +917,8 @@ print_pc(struct tcb *tcp) return; } tprintf("[%08lx] ", pc); +#elif defined(ARC) + tprintf("[%08lx] ", arc_regs.efa); #endif /* architecture */ } @@ -1009,7 +1014,8 @@ static void get_regset(pid_t pid) # if defined(ARM) \ || defined(I386) \ || defined(METAG) \ - || defined(OR1K) + || defined(OR1K) \ + || defined(ARC) static struct iovec io = { .iov_base = &ARCH_REGS_FOR_GETREGSET, .iov_len = sizeof(ARCH_REGS_FOR_GETREGSET) @@ -1035,7 +1041,7 @@ void get_regs(pid_t pid) { /* PTRACE_GETREGSET only */ -# if defined(METAG) || defined(OR1K) || defined(X32) || defined(AARCH64) +# if defined(METAG) || defined(OR1K) || defined(X32) || defined(AARCH64) || defined(ARC) get_regset(pid); /* PTRACE_GETREGS only */ @@ -1542,6 +1548,8 @@ get_scno(struct tcb *tcp) #elif defined(XTENSA) if (upeek(tcp->pid, SYSCALL_NR, &scno) < 0) return -1; +# elif defined(ARC) + scno = arc_regs.scratch.r8; #endif tcp->scno = scno; @@ -1932,6 +1940,11 @@ get_syscall_args(struct tcb *tcp) for (i = 0; i < nargs; ++i) if (upeek(tcp->pid, REG_A_BASE + xtensaregs[i], &tcp->u_arg[i]) < 0) return -1; +# elif defined(ARC) + long *arc_args = &arc_regs.scratch.r0; + for (i = 0; i < nargs; ++i) + tcp->u_arg[i] = *arc_args--; + #else /* Other architecture (32bits specific) */ for (i = 0; i < nargs; ++i) if (upeek(tcp->pid, i*4, &tcp->u_arg[i]) < 0) @@ -2130,6 +2143,8 @@ get_syscall_result(struct tcb *tcp) #elif defined(XTENSA) if (upeek(tcp->pid, REG_A_BASE + 2, &xtensa_a2) < 0) return -1; +#elif defined(ARC) + /* already done by get_regs */ #endif return 1; } @@ -2435,6 +2450,14 @@ get_error(struct tcb *tcp) else { tcp->u_rval = xtensa_a2; } +#elif defined(ARC) + if (check_errno && is_negated_errno(arc_regs.scratch.r0)) { + tcp->u_rval = -1; + u_error = -arc_regs.scratch.r0; + } + else { + tcp->u_rval = arc_regs.scratch.r0; + } #endif tcp->u_error = u_error; } |