zig.h: Add zig_trap() and zig_breakpoint() implementations for Hexagon.

Author: alexrp

lib/zig.h

@@ -256,6 +256,8 @@ typedef char bool;
 #define zig_trap() __asm__ volatile("udf #0xfe")
 #elif defined(__arm__) || defined(__aarch64__)
 #define zig_trap() __asm__ volatile("udf #0xfdee")
+#elif defined(__hexagon__)
+#define zig_trap() __asm__ volatile("r27:26 = memd(#0xbadc0fee)")
 #elif defined(__loongarch__) || defined(__powerpc__)
 #define zig_trap() __asm__ volatile(".word 0x0")
 #elif defined(__mips__)
@@ -280,6 +282,8 @@ typedef char bool;
 #define zig_breakpoint() __asm__ volatile("bkpt #0x0")
 #elif defined(__aarch64__)
 #define zig_breakpoint() __asm__ volatile("brk #0xf000")
+#elif defined(__hexagon__)
+#define zig_breakpoint() __asm__ volatile("brkpt")
 #elif defined(__loongarch__)
 #define zig_breakpoint() __asm__ volatile("break 0x0")
 #elif defined(__mips__)