RISC-V inline assembly constraints fix - platform.h (#1923)

Changed the constraint from "l" (specific to ARM) to the general "r" in inline assembly used for RISC-V architecture. This ensures most compilers are able to compile this header file.
raspberrypi · Sep 11, 2024 · f12ac1c · f12ac1c
1 parent 0f38151
commit f12ac1c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/rp2350/pico_platform/include/pico/platform.h b/src/rp2350/pico_platform/include/pico/platform.h
@@ -252,7 +252,7 @@ static inline uint8_t rp2040_rom_version(void) {
  */
 __force_inline static int32_t __mul_instruction(int32_t a, int32_t b) {
 #ifdef __riscv
-    __asm ("mul %0, %0, %1" : "+l" (a) : "l" (b) : );
+    __asm ("mul %0, %0, %1" : "+r" (a) : "r" (b) : );
 #else
     pico_default_asm ("muls %0, %1"     : "+l" (a) : "l" (b) : "cc");
 #endif