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35 /* ABI-related configuration.  */
53 #define isa_required(ABI) (abi_minimal_isa[(ABI).base][(ABI).ext])
58 is_multilib_enabled (struct loongarch_abi abi)
60   return enabled_abi_types[abi.base][abi.ext];
94 static const char* abi_str (struct loongarch_abi abi);
106 			 struct loongarch_abi abi);
107 static int abi_default_cpu_arch (struct loongarch_abi abi);
159   /* 1.  Target ABI */
160   t.abi.base = constrained.abi_base ? opt_abi_base : DEFAULT_ABI_BASE;
162   t.abi.ext = constrained.abi_ext ? opt_abi_ext : DEFAULT_ABI_EXT;
186       /* The target ISA is not ready yet, but (isa_required (t.abi)
187 	 + forced fpu) is enough for computing the forced base ABI.  */
188       struct loongarch_isa default_isa = isa_required (t.abi);
190       struct loongarch_abi force_abi = t.abi;
194       if (constrained.abi_base && (t.abi.base != force_abi.base))
196 		"%<-m%s%> overrides %<-m%s=%s%>, adjusting ABI to %qs",
198 		OPTSTR_ABI_BASE, loongarch_abi_base_strings[t.abi.base],
201       t.abi.base = force_abi.base;
206     if (t.abi.base != DEFAULT_ABI_BASE || t.abi.ext != DEFAULT_ABI_EXT)
211 	warning (0, "ABI changed (%qs to %qs) while multilib is disabled",
212 		 abi_str (default_abi), abi_str (t.abi));
255   /* 4.  ABI-ISA compatibility */
257      - There IS a unique default -march value for each ABI type
258        (config.gcc: triplet -> abi -> default arch).
260      - If the base ABI is incompatible with the default arch,
267   abi_tmp = t.abi;
275       int fallback_arch = abi_default_cpu_arch (t.abi);
279 		 "does not support %qs ABI, falling back to %<-m%s=%s%>",
280 		 arch_str (&t), abi_str (t.abi), OPTSTR_ARCH,
284 		 "does not support %qs ABI, falling back to %<-m%s=%s%>",
285 		 arch_str (&t), abi_str (t.abi), OPTSTR_ARCH,
295 	 try selecting another base ABI type.  */
305     /* If -march is compatible with the default ABI
314 		 "unable to implement ABI %qs with instruction set %qs",
315 		 abi_str (t.abi), isa_str (&t.isa, '/'));
318   /* Using the fallback ABI.  */
319   if (abi_tmp.base != t.abi.base || abi_tmp.ext != t.abi.ext)
325 	  /* Continue falling back until we find a feasible ABI type
336 		      warning (0, "ABI %qs cannot be implemented due to "
338 			       "falling back to %qs", abi_str (t.abi),
348 		       "default ABI %qs, falling back to %qs",
349 		       isa_str (&t.isa, '/'), abi_str (t.abi),
352 	      warning (0, "no multilib-enabled ABI (%qs) can be implemented "
361       t.abi = abi_tmp;
365       if (!is_multilib_enabled (t.abi))
368 		  "ABI %qs is not enabled at configure-time, "
369 		  "the linker might report an error", abi_str (t.abi));
371 	  inform (UNKNOWN_LOCATION, "ABI with startfiles: %s",
385 /* Returns the default ABI for the given instruction set.  */
389   struct loongarch_abi abi;
395 	  abi.base = ABI_BASE_LP64D;
400 	  abi.base = ABI_BASE_LP64F;
405 	  abi.base = ABI_BASE_LP64S;
412   abi.ext = ABI_EXT_BASE;
413   return abi;
453 abi_compat_p (const struct loongarch_isa *isa, struct loongarch_abi abi)
456   const struct loongarch_isa *isa2 = &isa_required (abi);
467 abi_default_cpu_arch (struct loongarch_abi abi)
469   switch (abi.base)
474 	if (abi.ext == ABI_EXT_BASE)
481 abi_str (struct loongarch_abi abi)
484   if (abi.ext == ABI_EXT_BASE)
486       obstack_copy0 (&msg_obstack, loongarch_abi_base_strings[abi.base],
487 		     strlen (loongarch_abi_base_strings[abi.base]));
490       APPEND_STRING (loongarch_abi_base_strings[abi.base])
492       APPEND_STRING (loongarch_abi_ext_strings[abi.ext])
588   opts->x_la_opt_abi_base = target->abi.base;