[Tarantool-patches] [PATCH] crash: allow to build on non x86-64 machines

[Cyrill Gorcunov <gorcunov@gmail.com>]

The general purpose registers were optional earlier
lets make them optional back allowing the code to
be compiled on non x86-64 machines.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
---
Guys, obviously I didn't test on real non x86 machine.
But since we've been notifying from public chat that
people are trying to compile tarantool on arm lets
make a quick fix.

branch gorcunov/crash-cross-compile

 src/lib/core/crash.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/src/lib/core/crash.c b/src/lib/core/crash.c
index 8397603bc..5b50ed3c4 100644
--- a/src/lib/core/crash.c
+++ b/src/lib/core/crash.c
@@ -30,10 +30,11 @@
 /** Use strlcpy with destination as an array */
 #define strlcpy_a(dst, src) strlcpy(dst, src, sizeof(dst))
 
-#ifdef TARGET_OS_LINUX
-#ifndef __x86_64__
-# error "Non x86-64 architectures are not supported"
+#if defined(TARGET_OS_LINUX) && defined(__x86_64__)
+# define HAS_GREG
 #endif
+
+#ifdef HAS_GREG
 struct crash_greg {
 	uint64_t	r8;
 	uint64_t	r9;
@@ -64,7 +65,7 @@ struct crash_greg {
 	uint64_t	fpstate;
 	uint64_t	reserved1[8];
 };
-#endif /* TARGET_OS_LINUX */
+#endif /* HAS_GREG */
 
 static struct crash_info {
 	/**
@@ -76,7 +77,7 @@ static struct crash_info {
 	 */
 	void *context_addr;
 	void *siginfo_addr;
-#ifdef TARGET_OS_LINUX
+#ifdef HAS_GREG
 	/**
 	 * Registers contents.
 	 */
@@ -199,7 +200,7 @@ crash_collect(int signo, siginfo_t *siginfo, void *ucontext)
 	backtrace(start, sizeof(cinfo->backtrace_buf));
 #endif
 
-#ifdef TARGET_OS_LINUX
+#ifdef HAS_GREG
 	/*
 	 * uc_mcontext on libc level looks somehow strange,
 	 * they define an array of uint64_t where each register
@@ -411,7 +412,7 @@ crash_report_stderr(struct crash_info *cinfo)
 	fprintf(stderr, "  context: %p\n", cinfo->context_addr);
 	fprintf(stderr, "  siginfo: %p\n", cinfo->siginfo_addr);
 
-#ifdef TARGET_OS_LINUX
+#ifdef HAS_GREG
 # define fprintf_reg(__n, __v)				\
 	fprintf(stderr, "  %-9s0x%-17llx%lld\n",	\
 		__n, (long long)__v, (long long)__v)
@@ -441,7 +442,7 @@ crash_report_stderr(struct crash_info *cinfo)
 	fprintf_reg("oldmask", cinfo->greg.oldmask);
 	fprintf_reg("trapno", cinfo->greg.trapno);
 # undef fprintf_reg
-#endif /* TARGET_OS_LINUX */
+#endif /* HAS_GREG */
 
 	fprintf(stderr, "Current time: %u\n", (unsigned)time(0));
 	fprintf(stderr, "Please file a bug at "
-- 
2.26.2