#include "target.h"
#include "target-def.h"
-#undef TARGET_SCHED_USE_DFA_PIPELINE_INTERFACE
-#define TARGET_SCHED_USE_DFA_PIPELINE_INTERFACE hook_int_void_1
-
/* Return nonzero if there is a bypass for the output of
OUT_INSN and the fp store IN_INSN. */
int
#endif
static void copy_reg_pointer (rtx, rtx);
+static void fix_range (const char *);
static int hppa_address_cost (rtx);
static bool hppa_rtx_costs (rtx, int, int, int *);
static inline rtx force_mode (enum machine_mode, rtx);
static void pa_hpux_init_libfuncs (void);
#endif
static rtx pa_struct_value_rtx (tree, int);
+static bool pa_pass_by_reference (CUMULATIVE_ARGS *ca, enum machine_mode,
+ tree, bool);
+
/* Save the operands last given to a compare for use when we
generate a scc or bcc insn. */
rtx hppa_compare_op0, hppa_compare_op1;
enum cmp_type hppa_branch_type;
-/* Which cpu we are scheduling for. */
-enum processor_type pa_cpu;
-
-/* String to hold which cpu we are scheduling for. */
-const char *pa_cpu_string;
-
/* Which architecture we are generating code for. */
enum architecture_type pa_arch;
/* String to hold which architecture we are generating code for. */
const char *pa_arch_string;
+/* String used with the -mfixed-range= option. */
+const char *pa_fixed_range_string;
+
+/* Which cpu we are scheduling for. */
+enum processor_type pa_cpu;
+
+/* String to hold which cpu we are scheduling for. */
+const char *pa_cpu_string;
+
/* Counts for the number of callee-saved general and floating point
registers which were saved by the current function's prologue. */
static int gr_saved, fr_saved;
#define TARGET_STRUCT_VALUE_RTX pa_struct_value_rtx
#undef TARGET_RETURN_IN_MEMORY
#define TARGET_RETURN_IN_MEMORY pa_return_in_memory
+#undef TARGET_MUST_PASS_IN_STACK
+#define TARGET_MUST_PASS_IN_STACK must_pass_in_stack_var_size
+#undef TARGET_PASS_BY_REFERENCE
+#define TARGET_PASS_BY_REFERENCE pa_pass_by_reference
#undef TARGET_EXPAND_BUILTIN_SAVEREGS
#define TARGET_EXPAND_BUILTIN_SAVEREGS hppa_builtin_saveregs
struct gcc_target targetm = TARGET_INITIALIZER;
\f
+/* Parse the -mfixed-range= option string. */
+
+static void
+fix_range (const char *const_str)
+{
+ int i, first, last;
+ char *str, *dash, *comma;
+
+ /* str must be of the form REG1'-'REG2{,REG1'-'REG} where REG1 and
+ REG2 are either register names or register numbers. The effect
+ of this option is to mark the registers in the range from REG1 to
+ REG2 as ``fixed'' so they won't be used by the compiler. This is
+ used, e.g., to ensure that kernel mode code doesn't use f32-f127. */
+
+ i = strlen (const_str);
+ str = (char *) alloca (i + 1);
+ memcpy (str, const_str, i + 1);
+
+ while (1)
+ {
+ dash = strchr (str, '-');
+ if (!dash)
+ {
+ warning ("value of -mfixed-range must have form REG1-REG2");
+ return;
+ }
+ *dash = '\0';
+
+ comma = strchr (dash + 1, ',');
+ if (comma)
+ *comma = '\0';
+
+ first = decode_reg_name (str);
+ if (first < 0)
+ {
+ warning ("unknown register name: %s", str);
+ return;
+ }
+
+ last = decode_reg_name (dash + 1);
+ if (last < 0)
+ {
+ warning ("unknown register name: %s", dash + 1);
+ return;
+ }
+
+ *dash = '-';
+
+ if (first > last)
+ {
+ warning ("%s-%s is an empty range", str, dash + 1);
+ return;
+ }
+
+ for (i = first; i <= last; ++i)
+ fixed_regs[i] = call_used_regs[i] = 1;
+
+ if (!comma)
+ break;
+
+ *comma = ',';
+ str = comma + 1;
+ }
+
+ /* Check if all floating point registers have been fixed. */
+ for (i = FP_REG_FIRST; i <= FP_REG_LAST; i++)
+ if (!fixed_regs[i])
+ break;
+
+ if (i > FP_REG_LAST)
+ target_flags |= MASK_DISABLE_FPREGS;
+}
+
void
override_options (void)
{
warning ("unknown -mschedule= option (%s).\nValid options are 700, 7100, 7100LC, 7200, 7300, and 8000\n", pa_cpu_string);
}
- /* Set the instruction set architecture. */
+ /* Set the instruction architecture. */
if (pa_arch_string && ! strcmp (pa_arch_string, "1.0"))
{
pa_arch_string = "1.0";
warning ("unknown -march= option (%s).\nValid options are 1.0, 1.1, and 2.0\n", pa_arch_string);
}
+ if (pa_fixed_range_string)
+ fix_range (pa_fixed_range_string);
+
/* Unconditional branches in the delay slot are not compatible with dwarf2
call frame information. There is no benefit in using this optimization
on PA8000 and later processors. */
return NO_REGS;
}
+/* In the 32-bit runtime, arguments larger than eight bytes are passed
+ by invisible reference. As a GCC extension, we also pass anything
+ with a zero or variable size by reference.
+
+ The 64-bit runtime does not describe passing any types by invisible
+ reference. The internals of GCC can't currently handle passing
+ empty structures, and zero or variable length arrays when they are
+ not passed entirely on the stack or by reference. Thus, as a GCC
+ extension, we pass these types by reference. The HP compiler doesn't
+ support these types, so hopefully there shouldn't be any compatibility
+ issues. This may have to be revisited when HP releases a C99 compiler
+ or updates the ABI. */
+
+static bool
+pa_pass_by_reference (CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED,
+ enum machine_mode mode, tree type,
+ bool named ATTRIBUTE_UNUSED)
+{
+ HOST_WIDE_INT size;
+
+ if (type)
+ size = int_size_in_bytes (type);
+ else
+ size = GET_MODE_SIZE (mode);
+
+ if (TARGET_64BIT)
+ return size <= 0;
+ else
+ return size <= 0 || size > 8;
+}
+
enum direction
function_arg_padding (enum machine_mode mode, tree type)
{
static tree
hppa_gimplify_va_arg_expr (tree valist, tree type, tree *pre_p, tree *post_p)
{
- bool indirect;
-
- indirect = FUNCTION_ARG_PASS_BY_REFERENCE (dummy, TYPE_MODE (type), type, 0);
-
if (TARGET_64BIT)
{
/* Args grow upward. We can use the generic routines. */
-
- if (indirect)
- return ind_gimplify_va_arg_expr (valist, type, pre_p, post_p);
- else
- return std_gimplify_va_arg_expr (valist, type, pre_p, post_p);
+ return std_gimplify_va_arg_expr (valist, type, pre_p, post_p);
}
else /* !TARGET_64BIT */
{
tree valist_type;
tree t, u;
unsigned int size, ofs;
+ bool indirect;
+ indirect = pass_by_reference (NULL, TYPE_MODE (type), type, 0);
if (indirect)
{
type = ptr;
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