/* Subroutines for assembler code output on the NS32000.
- Copyright (C) 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000
+ Copyright (C) 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
This file is part of GNU CC.
#include "real.h"
#include "insn-config.h"
#include "conditions.h"
-#include "insn-flags.h"
#include "output.h"
#include "insn-attr.h"
#include "tree.h"
#include "flags.h"
#include "recog.h"
#include "tm_p.h"
+#include "target.h"
+#include "target-def.h"
#ifdef OSF_OS
int ns32k_num_files = 0;
FRAME_POINTER_REG, STACK_POINTER_REG
};
-const char *const ns32k_out_reg_names[] = OUTPUT_REGISTER_NAMES;
+static const char *const ns32k_out_reg_names[] = OUTPUT_REGISTER_NAMES;
static rtx gen_indexed_expr PARAMS ((rtx, rtx, rtx));
static const char *singlemove_string PARAMS ((rtx *));
static void move_tail PARAMS ((rtx[], int, int));
+static int ns32k_valid_type_attribute_p PARAMS ((tree, tree, tree, tree));
+static void ns32k_output_function_prologue PARAMS ((FILE *, HOST_WIDE_INT));
+static void ns32k_output_function_epilogue PARAMS ((FILE *, HOST_WIDE_INT));
+\f
+/* Initialize the GCC target structure. */
+#undef TARGET_VALID_TYPE_ATTRIBUTE
+#define TARGET_VALID_TYPE_ATTRIBUTE ns32k_valid_type_attribute_p
+
+#undef TARGET_ASM_FUNCTION_PROLOGUE
+#define TARGET_ASM_FUNCTION_PROLOGUE ns32k_output_function_prologue
+#undef TARGET_ASM_FUNCTION_EPILOGUE
+#define TARGET_ASM_FUNCTION_EPILOGUE ns32k_output_function_epilogue
+
+struct gcc_target targetm = TARGET_INITIALIZER;
+\f
+/* Generate the assembly code for function entry. FILE is a stdio
+ stream to output the code to. SIZE is an int: how many units of
+ temporary storage to allocate.
+
+ Refer to the array `regs_ever_live' to determine which registers to
+ save; `regs_ever_live[I]' is nonzero if register number I is ever
+ used in the function. This function is responsible for knowing
+ which registers should not be saved even if used. */
+
+/*
+ * The function prologue for the ns32k is fairly simple.
+ * If a frame pointer is needed (decided in reload.c ?) then
+ * we need assembler of the form
+ *
+ * # Save the oldframe pointer, set the new frame pointer, make space
+ * # on the stack and save any general purpose registers necessary
+ *
+ * enter [<general purpose regs to save>], <local stack space>
+ *
+ * movf fn, tos # Save any floating point registers necessary
+ * .
+ * .
+ *
+ * If a frame pointer is not needed we need assembler of the form
+ *
+ * # Make space on the stack
+ *
+ * adjspd <local stack space + 4>
+ *
+ * # Save any general purpose registers necessary
+ *
+ * save [<general purpose regs to save>]
+ *
+ * movf fn, tos # Save any floating point registers necessary
+ * .
+ * .
+ */
+
+#if !defined (MERLIN_TARGET) && !defined (UTEK_ASM)
+
+#if defined(IMMEDIATE_PREFIX) && IMMEDIATE_PREFIX
+#define ADJSP(FILE, N) \
+ fprintf (FILE, "\tadjspd %c%d\n", IMMEDIATE_PREFIX, (N))
+#else
+#define ADJSP(FILE, N) \
+ fprintf (FILE, "\tadjspd %d\n", (N))
+#endif
+
+static void
+ns32k_output_function_prologue (file, size)
+ FILE *file;
+ HOST_WIDE_INT size;
+{
+ register int regno, g_regs_used = 0;
+ int used_regs_buf[8], *bufp = used_regs_buf;
+ int used_fregs_buf[17], *fbufp = used_fregs_buf;
+ extern char call_used_regs[];
+
+ for (regno = R0_REGNUM; regno < F0_REGNUM; regno++)
+ if (regs_ever_live[regno]
+ && ! call_used_regs[regno])
+ {
+ *bufp++ = regno; g_regs_used++;
+ }
+ *bufp = -1;
+
+ for (; regno < FRAME_POINTER_REGNUM; regno++)
+ if (regs_ever_live[regno] && !call_used_regs[regno])
+ {
+ *fbufp++ = regno;
+ }
+ *fbufp = -1;
+
+ bufp = used_regs_buf;
+ if (frame_pointer_needed)
+ fprintf (file, "\tenter [");
+ else
+ {
+ if (size)
+ ADJSP (file, size + 4);
+ if (g_regs_used && g_regs_used > 4)
+ fprintf (file, "\tsave [");
+ else
+ {
+ while (*bufp >= 0)
+ fprintf (file, "\tmovd r%d,tos\n", *bufp++);
+ g_regs_used = 0;
+ }
+ }
+
+ while (*bufp >= 0)
+ {
+ fprintf (file, "r%d", *bufp++);
+ if (*bufp >= 0)
+ fputc (',', file);
+ }
+
+ if (frame_pointer_needed)
+ fprintf (file, "],%d\n", size);
+ else if (g_regs_used)
+ fprintf (file, "]\n");
+
+ fbufp = used_fregs_buf;
+ while (*fbufp >= 0)
+ {
+ if ((*fbufp & 1) || (fbufp[0] != fbufp[1] - 1))
+ fprintf (file, "\tmovf %s,tos\n", ns32k_out_reg_names[*fbufp++]);
+ else
+ {
+ fprintf (file, "\tmovl %s,tos\n",
+ ns32k_out_reg_names[fbufp[0]]);
+ fbufp += 2;
+ }
+ }
+
+ if (flag_pic && current_function_uses_pic_offset_table)
+ {
+ fprintf (file, "\tsprd sb,tos\n");
+ if (TARGET_REGPARM)
+ {
+ fprintf (file, "\taddr __GLOBAL_OFFSET_TABLE_(pc),tos\n");
+ fprintf (file, "\tlprd sb,tos\n");
+ }
+ else
+ {
+ fprintf (file, "\taddr __GLOBAL_OFFSET_TABLE_(pc),r0\n");
+ fprintf (file, "\tlprd sb,r0\n");
+ }
+ }
+}
+
+#else /* MERLIN_TARGET || UTEK_ASM */
+
+/* This differs from the standard one above in printing a bitmask
+ rather than a register list in the enter or save instruction. */
+
+static void
+ns32k_output_function_prologue (file, size)
+ FILE *file;
+ HOST_WIDE_INT size;
+{
+ register int regno, g_regs_used = 0;
+ int used_regs_buf[8], *bufp = used_regs_buf;
+ int used_fregs_buf[8], *fbufp = used_fregs_buf;
+ extern char call_used_regs[];
+
+ for (regno = 0; regno < 8; regno++)
+ if (regs_ever_live[regno]
+ && ! call_used_regs[regno])
+ {
+ *bufp++ = regno; g_regs_used++;
+ }
+ *bufp = -1;
+
+ for (; regno < 16; regno++)
+ if (regs_ever_live[regno] && !call_used_regs[regno]) {
+ *fbufp++ = regno;
+ }
+ *fbufp = -1;
+
+ bufp = used_regs_buf;
+ if (frame_pointer_needed)
+ fprintf (file, "\tenter ");
+ else if (g_regs_used)
+ fprintf (file, "\tsave ");
+
+ if (frame_pointer_needed || g_regs_used)
+ {
+ char mask = 0;
+ while (*bufp >= 0)
+ mask |= 1 << *bufp++;
+ fprintf (file, "$0x%x", (int) mask & 0xff);
+ }
+
+ if (frame_pointer_needed)
+#ifdef UTEK_ASM
+ fprintf (file, ",$%d\n", size);
+#else
+ fprintf (file, ",%d\n", size);
+#endif
+ else if (g_regs_used)
+ fprintf (file, "\n");
+
+ fbufp = used_fregs_buf;
+ while (*fbufp >= 0)
+ {
+ if ((*fbufp & 1) || (fbufp[0] != fbufp[1] - 1))
+ fprintf (file, "\tmovf f%d,tos\n", *fbufp++ - 8);
+ else
+ {
+ fprintf (file, "\tmovl f%d,tos\n", fbufp[0] - 8);
+ fbufp += 2;
+ }
+ }
+}
+
+#endif /* MERLIN_TARGET || UTEK_ASM */
+
+/* This function generates the assembly code for function exit,
+ on machines that need it.
+
+ The function epilogue should not depend on the current stack pointer,
+ if EXIT_IGNORE_STACK is nonzero. That doesn't apply here.
+
+ If a frame pointer is needed (decided in reload.c ?) then
+ we need assembler of the form
+
+ movf tos, fn # Restore any saved floating point registers
+ .
+ .
+
+ # Restore any saved general purpose registers, restore the stack
+ # pointer from the frame pointer, restore the old frame pointer.
+ exit [<general purpose regs to save>]
+
+ If a frame pointer is not needed we need assembler of the form
+ # Restore any general purpose registers saved
+
+ movf tos, fn # Restore any saved floating point registers
+ .
+ .
+ .
+ restore [<general purpose regs to save>]
+
+ # reclaim space allocated on stack
+
+ adjspd <-(local stack space + 4)> */
+
+#if !defined (MERLIN_TARGET) && !defined (UTEK_ASM)
+
+static void
+ns32k_output_function_epilogue (file, size)
+ FILE *file;
+ HOST_WIDE_INT size;
+{
+ register int regno, g_regs_used = 0, f_regs_used = 0;
+ int used_regs_buf[8], *bufp = used_regs_buf;
+ int used_fregs_buf[17], *fbufp = used_fregs_buf;
+ extern char call_used_regs[];
+
+ if (flag_pic && current_function_uses_pic_offset_table)
+ fprintf (file, "\tlprd sb,tos\n");
+
+ *fbufp++ = -2;
+ for (regno = F0_REGNUM; regno < FRAME_POINTER_REGNUM; regno++)
+ if (regs_ever_live[regno] && !call_used_regs[regno])
+ {
+ *fbufp++ = regno; f_regs_used++;
+ }
+ fbufp--;
+
+ for (regno = 0; regno < F0_REGNUM; regno++)
+ if (regs_ever_live[regno]
+ && ! call_used_regs[regno])
+ {
+ *bufp++ = regno; g_regs_used++;
+ }
+
+ while (fbufp > used_fregs_buf)
+ {
+ if ((*fbufp & 1) && fbufp[0] == fbufp[-1] + 1)
+ {
+ fprintf (file, "\tmovl tos,%s\n",
+ ns32k_out_reg_names[fbufp[-1]]);
+ fbufp -= 2;
+ }
+ else fprintf (file, "\tmovf tos,%s\n", ns32k_out_reg_names[*fbufp--]);
+ }
+
+ if (frame_pointer_needed)
+ fprintf (file, "\texit [");
+ else
+ {
+ if (g_regs_used && g_regs_used > 4)
+ fprintf (file, "\trestore [");
+ else
+ {
+ while (bufp > used_regs_buf)
+ fprintf (file, "\tmovd tos,r%d\n", *--bufp);
+ g_regs_used = 0;
+ }
+ }
+
+ while (bufp > used_regs_buf)
+ {
+ fprintf (file, "r%d", *--bufp);
+ if (bufp > used_regs_buf)
+ fputc (',', file);
+ }
+
+ if (g_regs_used || frame_pointer_needed)
+ fprintf (file, "]\n");
+
+ if (size && !frame_pointer_needed)
+ ADJSP (file, -(size + 4));
+
+ if (current_function_pops_args)
+ fprintf (file, "\tret %d\n", current_function_pops_args);
+ else
+ fprintf (file, "\tret 0\n");
+}
+
+#else /* MERLIN_TARGET || UTEK_ASM */
+
+/* This differs from the standard one above in printing a bitmask
+ rather than a register list in the exit or restore instruction. */
+
+static void
+ns32k_output_function_epilogue (file, size)
+ FILE *file;
+ HOST_WIDE_INT size ATTRIBUTE_UNUSED;
+{
+ register int regno, g_regs_used = 0, f_regs_used = 0;
+ int used_regs_buf[8], *bufp = used_regs_buf;
+ int used_fregs_buf[8], *fbufp = used_fregs_buf;
+ extern char call_used_regs[];
+
+ *fbufp++ = -2;
+ for (regno = 8; regno < 16; regno++)
+ if (regs_ever_live[regno] && !call_used_regs[regno]) {
+ *fbufp++ = regno; f_regs_used++;
+ }
+ fbufp--;
+
+ for (regno = 0; regno < 8; regno++)
+ if (regs_ever_live[regno]
+ && ! call_used_regs[regno])
+ {
+ *bufp++ = regno; g_regs_used++;
+ }
+
+ while (fbufp > used_fregs_buf)
+ {
+ if ((*fbufp & 1) && fbufp[0] == fbufp[-1] + 1)
+ {
+ fprintf (file, "\tmovl tos,f%d\n", fbufp[-1] - 8);
+ fbufp -= 2;
+ }
+ else fprintf (file, "\tmovf tos,f%d\n", *fbufp-- - 8);
+ }
+
+ if (frame_pointer_needed)
+ fprintf (file, "\texit ");
+ else if (g_regs_used)
+ fprintf (file, "\trestore ");
+
+ if (g_regs_used || frame_pointer_needed)
+ {
+ char mask = 0;
+
+ while (bufp > used_regs_buf)
+ {
+ /* Utek assembler takes care of reversing this */
+ mask |= 1 << *--bufp;
+ }
+ fprintf (file, "$0x%x\n", (int) mask & 0xff);
+ }
+
+#ifdef UTEK_ASM
+ if (current_function_pops_args)
+ fprintf (file, "\tret $%d\n", current_function_pops_args);
+ else
+ fprintf (file, "\tret $0\n");
+#else
+ if (current_function_pops_args)
+ fprintf (file, "\tret %d\n", current_function_pops_args);
+ else
+ fprintf (file, "\tret 0\n");
+#endif
+}
+
+#endif /* MERLIN_TARGET || UTEK_ASM */
/* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. */
int
else if (offsettable_memref_p (operands[num]))
{
lo_half[num] = operands[num];
- hi_half[num] = adj_offsettable_operand (operands[num], 4);
+ hi_half[num] = adjust_address (operands[num], SImode, 4);
}
else
abort ();
if (optype0 == REGOP)
latehalf[0] = gen_rtx_REG (SImode, REGNO (operands[0]) + 1);
else if (optype0 == OFFSOP)
- latehalf[0] = adj_offsettable_operand (operands[0], 4);
+ latehalf[0] = adjust_address (operands[0], SImode, 4);
else
latehalf[0] = operands[0];
if (optype1 == REGOP)
latehalf[1] = gen_rtx_REG (SImode, REGNO (operands[1]) + 1);
else if (optype1 == OFFSOP)
- latehalf[1] = adj_offsettable_operand (operands[1], 4);
+ latehalf[1] = adjust_address (operands[1], SImode, 4);
else if (optype1 == CNSTOP)
split_double (operands[1], &operands[1], &latehalf[1]);
else
xops[1] = operands[0];
output_asm_insn ("addr %a0,%1", xops);
operands[1] = gen_rtx_MEM (DImode, operands[0]);
- latehalf[1] = adj_offsettable_operand (operands[1], 4);
+ latehalf[1] = adjust_address (operands[1], SImode, 4);
/* The first half has the overlap, Do the late half first. */
output_asm_insn (singlemove_string (latehalf), latehalf);
/* Then clobber. */
{
if (bytes & 2)
{
- rtx src, dest;
- dest = change_address (operands[0], HImode,
- plus_constant (XEXP (operands[0], 0), offset));
- src = change_address (operands[1], HImode,
- plus_constant (XEXP (operands[1], 0), offset));
- emit_move_insn (dest, src);
+ emit_move_insn (adjust_address (operands[0], HImode, offset),
+ adjust_address (operands[1], HImode, offset));
offset += 2;
}
if (bytes & 1)
- {
- rtx src, dest;
- dest = change_address (operands[0], QImode,
- plus_constant (XEXP (operands[0], 0), offset));
- src = change_address (operands[1], QImode,
- plus_constant (XEXP (operands[1], 0), offset));
- emit_move_insn (dest, src);
- }
+ emit_move_insn (adjust_address (operands[0], QImode, offset),
+ adjust_address (operands[1], QImode, offset));
}
void
if (constp && bytes < 20)
{
int words = bytes >> 2;
+
if (words)
{
if (words < 3 || flag_unroll_loops)
{
int offset = 0;
+
for (; words; words--, offset += 4)
- {
- rtx src, dest;
- dest = change_address (operands[0], SImode,
- plus_constant (XEXP (operands[0], 0), offset));
- src = change_address (operands[1], SImode,
- plus_constant (XEXP (operands[1], 0), offset));
- emit_move_insn (dest, src);
- }
+ emit_move_insn (adjust_address (operands[0], SImode, offset),
+ adjust_address (operands[1], SImode, offset));
}
else
{
}
\f
/* Return nonzero if IDENTIFIER with arguments ARGS is a valid machine specific
- attribute for DECL. The attributes in ATTRIBUTES have previously been
- assigned to DECL. */
-
-int
-ns32k_valid_decl_attribute_p (decl, attributes, identifier, args)
- tree decl ATTRIBUTE_UNUSED;
- tree attributes ATTRIBUTE_UNUSED;
- tree identifier ATTRIBUTE_UNUSED;
- tree args ATTRIBUTE_UNUSED;
-{
- return 0;
-}
-
-/* Return nonzero if IDENTIFIER with arguments ARGS is a valid machine specific
attribute for TYPE. The attributes in ATTRIBUTES have previously been
assigned to TYPE. */
-int
+static int
ns32k_valid_type_attribute_p (type, attributes, identifier, args)
tree type;
tree attributes ATTRIBUTE_UNUSED;
return 0;
}
-/* Return 0 if the attributes for two types are incompatible, 1 if they
- are compatible, and 2 if they are nearly compatible (which causes a
- warning to be generated). */
-
-int
-ns32k_comp_type_attributes (type1, type2)
- tree type1 ATTRIBUTE_UNUSED;
- tree type2 ATTRIBUTE_UNUSED;
-{
- return 1;
-}
-
\f
/* Value is the number of bytes of arguments automatically
popped when returning from a subroutine call.
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