Hi Iain, Johannes. I'm asking here because I don't expect anybody else is playing with thumb instructions.
Both GDC and LDC have version ARM_Thumb defined for original thumb (call it thumb-1) and thumb-2. But there is no way to tell in D code which set is supported. GCC and clang define these: __arm__ Always defined when building for the ARM architecture (regardless of target instruction set) __thumb__ Defined only when targeting any Thumb instruction set variant (Thumb-1 or Thumb-2) __thumb2__ Defined only when targeting Thumb-2 We could mimic this by adding ARM_Thumb2. But in my experience it is usually thumb-1 that needs special handling because it is very limited, and thumb-2 uses unified assembler so often same code works for either thumb-2 or arm modes. So I am thinking that ARM_Thumb1 would be more practical. What do you think? -- Dan
