From ac17a394a5701174c705050640e26c9cb95d289b Mon Sep 17 00:00:00 2001
From: Pino Toscano <toscano.pino@tiscali.it>
Date: Thu, 6 Oct 2022 23:17:57 +0200
Subject: [PATCH] Add M68k detection

- detect the M68k architecture (Motorola 68000) and define
  Q_PROCESSOR_M68K
- set the right machine type in QElfParser for M68k ELF files

Change-Id: Ie5694abbe1ae2bfeb5692defba0ca6062c1d60ac
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
---
 src/corelib/global/archdetect.cpp        |    2 ++
 src/corelib/global/qglobal.cpp           |    9 +++++++++
 src/corelib/global/qprocessordetection.h |    9 +++++++++
 src/corelib/plugin/qelfparser_p.cpp      |    3 +++
 4 files changed, 23 insertions(+)

--- a/src/corelib/global/archdetect.cpp
+++ b/src/corelib/global/archdetect.cpp
@@ -25,6 +25,8 @@
 #  define ARCH_PROCESSOR "x86_64"
 #elif defined(Q_PROCESSOR_IA64)
 #  define ARCH_PROCESSOR "ia64"
+#elif defined(Q_PROCESSOR_M68K)
+#  define ARCH_PROCESSOR "m68k"
 #elif defined(Q_PROCESSOR_MIPS_64)
 #  define ARCH_PROCESSOR "mips64"
 #elif defined(Q_PROCESSOR_MIPS)
--- a/src/corelib/global/qprocessordetection.h
+++ b/src/corelib/global/qprocessordetection.h
@@ -197,6 +197,15 @@
 // Q_BYTE_ORDER not defined, use endianness auto-detection
 
 /*
+    Motorola 68000 family, no revisions or variants
+
+    M68K is big-endian.
+*/
+#elif defined(__m68k__)
+#  define Q_PROCESSOR_M68K
+#  define Q_BYTE_ORDER Q_BIG_ENDIAN
+
+/*
     MIPS family, known revisions: I, II, III, IV, 32, 64
 
     MIPS is bi-endian, use endianness auto-detection implemented below.
--- a/src/corelib/plugin/qelfparser_p.cpp
+++ b/src/corelib/plugin/qelfparser_p.cpp
@@ -122,6 +122,8 @@ struct ElfMachineCheck
             EM_PARISC
 #elif defined(Q_PROCESSOR_IA64)
             EM_IA_64
+#elif defined(Q_PROCESSOR_M68K)
+            EM_68K
 #elif defined(Q_PROCESSOR_MIPS)
             EM_MIPS
 #elif defined(Q_PROCESSOR_POWER_32)
@@ -378,6 +380,7 @@ Q_DECL_UNUSED Q_DECL_COLD_FUNCTION stati
     switch (r.machine) {
     // list definitely not exhaustive!
     case EM_NONE:       d << ", no machine"; break;
+    case EM_68K:        d << ", MC68000"; break;
     case EM_ARM:        d << ", ARM"; break;
     case EM_AARCH64:    d << ", AArch64"; break;
 #ifdef EM_BLACKFIN
--- a/src/corelib/global/qglobal.cpp
+++ b/src/corelib/global/qglobal.cpp
@@ -1810,6 +1810,15 @@ bool qSharedBuild() noexcept
 */
 
 /*!
+    \macro Q_PROCESSOR_M68K
+    \relates <QtGlobal>
+
+    Defined if the application is compiled for Motorola 68000 processors.
+
+    \sa QSysInfo::buildCpuArchitecture()
+*/
+
+/*!
     \macro Q_PROCESSOR_MIPS
     \relates <QtGlobal>