Disallow -asm for non-x86[_64] targets

(cherry picked from commit edf9c15)

Author: dkl

changelog.txt

@@ -15,6 +15,7 @@ Version 1.02.1
 - Windows API binding: DirectX headers missed some declarations and some didn't compile
 - crt/string.bi, crt/mem.bi: Added CONSTs to function declarations
 - #767: Illegal byref result assignments will now cause a proper error message, not just a warning
+- Using the -asm att|intel option for non-x86[_64] targets now triggers an error
 
 
 Version 1.02.0

src/compiler/error.bas

@@ -399,7 +399,8 @@ declare function hMakeParamDesc _
 		@"CONST used on destructor (not needed)", _
 		@"Byref function result not set", _
 		@"Function result assignment outside of the function", _
-		@"Type mismatch in byref function result assignment" _
+		@"Type mismatch in byref function result assignment", _
+		@"-asm att|intel option given, but not supported for this target (only x86 or x86_64)" _
 	}
 
 

src/compiler/error.bi

@@ -321,6 +321,7 @@ enum FB_ERRMSG
 	FB_ERRMSG_NOBYREFFUNCTIONRESULT
 	FB_ERRMSG_RESULTASSIGNOUTSIDEFUNCTION
 	FB_ERRMSG_TYPEMISMATCHINBYREFRESULTASSIGN
+	FB_ERRMSG_ASMOPTIONGIVENFORNONX86
 
 	FB_ERRMSGS
 end enum

src/compiler/fbc.bas

@@ -2230,13 +2230,21 @@ private sub hParseArgs( byval argc as integer, byval argv as zstring ptr ptr )
 		end if
 	end select
 
-	'' -asm overrides the target's default
 	if( fbc.asmsyntax >= 0 ) then
+		'' -asm only applies to x86 and x86_64
+		select case( fbGetCpuFamily( ) )
+		case FB_CPUFAMILY_X86, FB_CPUFAMILY_X86_64
+		case else
+			errReportEx( FB_ERRMSG_ASMOPTIONGIVENFORNONX86, fbGetTargetId( ), -1 )
+		end select
+
 		'' -gen gas only supports -asm intel
 		if( (fbGetOption( FB_COMPOPT_BACKEND ) = FB_BACKEND_GAS) and _
 		    (fbc.asmsyntax <> FB_ASMSYNTAX_INTEL) ) then
 			errReportEx( FB_ERRMSG_GENGASWITHOUTINTEL, "", -1 )
 		end if
+
+		'' -asm overrides the target's default
 		fbSetOption( FB_COMPOPT_ASMSYNTAX, fbc.asmsyntax )
 	end if
 
@@ -3231,7 +3239,7 @@ private sub hPrintOptions( )
 	print "  @<file>          Read more command line arguments from a file"
 	print "  -a <file>        Treat file as .o/.a input file"
 	print "  -arch <type>     Set target architecture (default: 486)"
-	print "  -asm att|intel   Set asm format (-gen gcc)"
+	print "  -asm att|intel   Set asm format (-gen gcc|llvm, x86 or x86_64 only)"
 	print "  -b <file>        Treat file as .bas input file"
 	print "  -c               Compile only, do not link"
 	print "  -C               Preserve temporary .o files"