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| author | Michael Munday <mike.munday@ibm.com> | 2017-12-05 10:05:41 -0500 |
|---|---|---|
| committer | Dave Watson <davejwatson@fb.com> | 2018-01-09 07:37:55 -0800 |
| commit | 441adc46ffe775d83446ec7253f5259864069cba (patch) | |
| tree | c0b5c5fa1535f7007c047b10a54f4413e8a7dbeb /configure.ac | |
| parent | 4c07b170372feb174e11775a01ea3bd718d636d6 (diff) | |
| download | libunwind-441adc46ffe775d83446ec7253f5259864069cba.tar.gz | |
Add port to Linux on IBM Z (s390x)
This adds a port to Linux on the IBM Z platform (a.k.a s390x). It only
supports the 64-bit ABI. Most functionality is working and all the tests
pass with the exception of the coredump tests*.
Unwinding is only supported if DWARF unwind information is present.
libunwind can't currently make use of the backchain (if present).
The getcontext/setcontext functions only preserve/restore a subset of
registers. Currently this only consists of callee-saved registers and
some parameter registers.
Vector registers and access registers are not saved (and aren't callee-
saved) by getcontext and cannot currently be modified. They will however
be restored unmodified after resuming a context from a signal handler.
There is no special libunwind support for setjmp, the functionality is
emulated using glibc (I think all the ports do this for modern Linux
kernels).
* Unwinding on s390x requires floating point register access which the
coredump library doesn't currently support.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 0c512597..2cb006af 100644 --- a/configure.ac +++ b/configure.ac @@ -175,6 +175,7 @@ AM_CONDITIONAL(ARCH_PPC32, test x$target_arch = xppc32) AM_CONDITIONAL(ARCH_PPC64, test x$target_arch = xppc64) AM_CONDITIONAL(ARCH_SH, test x$target_arch = xsh) AM_CONDITIONAL(ARCH_TILEGX, test x$target_arch = xtilegx) +AM_CONDITIONAL(ARCH_S390X, test x$target_arch = xs390x) AM_CONDITIONAL(OS_LINUX, expr x$target_os : xlinux >/dev/null) AM_CONDITIONAL(OS_HPUX, expr x$target_os : xhpux >/dev/null) AM_CONDITIONAL(OS_FREEBSD, expr x$target_os : xfreebsd >/dev/null) @@ -183,7 +184,7 @@ AM_CONDITIONAL(OS_QNX, expr x$target_os : xnto-qnx >/dev/null) AC_MSG_CHECKING([for ELF helper width]) case "${target_arch}" in (arm|hppa|ppc32|x86|sh) use_elf32=yes; AC_MSG_RESULT([32]);; -(aarch64|ia64|ppc64|x86_64|tilegx) use_elf64=yes; AC_MSG_RESULT([64]);; +(aarch64|ia64|ppc64|x86_64|s390x|tilegx) use_elf64=yes; AC_MSG_RESULT([64]);; (mips) use_elfxx=yes; AC_MSG_RESULT([xx]);; *) AC_MSG_ERROR([Unknown ELF target: ${target_arch}]) esac |