baremetal: Add example for SDCC toolchain for 8051 architecture

Change-Id: I4a7dfadcefdca0b8c26167188c46fbc5cdd4766b
Reviewed-by: Richard Weickelt <richard@weickelt.de>
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

2 files changed, 19 insertions, 5 deletions

diff --git a/examples/baremetal/cc2540usbdongle/greenblink/greenblink.qbs b/examples/baremetal/cc2540usbdongle/greenblink/greenblink.qbs
index 4dc400404..eb0be6b34 100644
--- a/examples/baremetal/cc2540usbdongle/greenblink/greenblink.qbs
+++ b/examples/baremetal/cc2540usbdongle/greenblink/greenblink.qbs
@@ -56,6 +56,7 @@ CppApplication {
             return false;
         return qbs.toolchain.contains("iar")
             || qbs.toolchain.contains("keil")
+            || qbs.toolchain.contains("sdcc")
     }
     name: "greenblink"
     cpp.positionIndependentCode: false
@@ -105,6 +106,15 @@ CppApplication {
     }
 
     //
+    // SDCC-specific properties and sources.
+    //
+
+    Properties {
+        condition: qbs.toolchain.contains("sdcc")
+        cpp.commonCompilerFlags: ["-mmcs51"]
+    }
+
+    //
     // Common code.
     //
 
diff --git a/examples/baremetal/cc2540usbdongle/greenblink/system.h b/examples/baremetal/cc2540usbdongle/greenblink/system.h
index 0b5027bf9..cdc6302d4 100644
--- a/examples/baremetal/cc2540usbdongle/greenblink/system.h
+++ b/examples/baremetal/cc2540usbdongle/greenblink/system.h
@@ -58,18 +58,22 @@ extern "C" {
 #if defined(__ICC8051__)
 #include <intrinsics.h>
 # define system_nop() __no_operation()
-# define SFR(name,addr) __sfr __no_init volatile unsigned char name @ addr;
+# define DEFINE_SFR(name,addr) __sfr __no_init volatile unsigned char name @ addr;
 #elif defined (__C51__)
 #include <intrins.h>
 # define system_nop() _nop_()
-# define SFR(name, addr) sfr name = addr;
+# define DEFINE_SFR(name, addr) sfr name = addr;
+#elif defined (__SDCC_mcs51)
+#include <mcs51/compiler.h>
+# define DEFINE_SFR(name, addr) __sfr __at(addr) name;
+# define system_nop() NOP()
 #else
 #error "Unsupported toolchain"
 #endif
 
-SFR(P0   , 0x80u) // Port 0.
-SFR(P0SEL, 0xF3u) // Port 0 function select.
-SFR(P0DIR, 0xFDu) // Port 0 direction select.
+DEFINE_SFR(P0   , 0x80u) // Port 0.
+DEFINE_SFR(P0SEL, 0xF3u) // Port 0 function select.
+DEFINE_SFR(P0DIR, 0xFDu) // Port 0 direction select.
 
 #ifdef __cplusplus
 }