aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat (limited to '2.95.3/gentoo/20_all_crosstool-arm-linux.patch')
-rw-r--r--2.95.3/gentoo/20_all_crosstool-arm-linux.patch647
1 files changed, 647 insertions, 0 deletions
diff --git a/2.95.3/gentoo/20_all_crosstool-arm-linux.patch b/2.95.3/gentoo/20_all_crosstool-arm-linux.patch
new file mode 100644
index 0000000..00974f6
--- /dev/null
+++ b/2.95.3/gentoo/20_all_crosstool-arm-linux.patch
@@ -0,0 +1,647 @@
+--------- snip -------
+Downloaded from ftp://ftp.linux.org.uk/pub/armlinux/toolchain/src-2.95.3/gcc-2.95.3.diff.bz2
+Not sure what it fixes, but this appears to be The Patch used with gcc-2.95.3 on arm.
+--------- snip -------
+
+diff -urN gcc-2.95.3-orig/gcc/config/arm/arm.c gcc-2.95.3/gcc/config/arm/arm.c
+--- gcc-2.95.3-orig/gcc/config/arm/arm.c Thu Jan 25 15:03:24 2001
++++ gcc-2.95.3/gcc/config/arm/arm.c Fri Jul 20 19:39:11 2001
+@@ -1529,27 +1529,34 @@
+ return gen_rtx_PLUS (Pmode, base, offset);
+ }
+ else if (GET_CODE (orig) == LABEL_REF)
+- current_function_uses_pic_offset_table = 1;
+-
+- return orig;
+-}
++ {
++ current_function_uses_pic_offset_table = 1;
+
+-static rtx pic_rtx;
++ if (NEED_PLT_GOT)
++ {
++ rtx pic_ref, address = gen_reg_rtx (Pmode);
++
++ emit_insn (gen_pic_load_addr (address, orig));
++ pic_ref = gen_rtx_PLUS (Pmode, pic_offset_table_rtx,
++ address);
++ emit_move_insn (address, pic_ref);
++ return address;
++ }
++ }
+
+-int
+-is_pic(x)
+- rtx x;
+-{
+- if (x == pic_rtx)
+- return 1;
+- return 0;
++ return orig;
+ }
+
++/* Generate code to load the PIC register. PROLOGUE is true if
++ called from arm_expand_prologue (in which case we want the
++ generated insns at the start of the function); false if called
++ by an exception receiver that needs the PIC register reloaded
++ (in which case the insns are just dumped at the current location). */
+ void
+-arm_finalize_pic ()
++arm_finalize_pic (int prologue)
+ {
+ #ifndef AOF_ASSEMBLER
+- rtx l1, pic_tmp, pic_tmp2, seq;
++ rtx l1, pic_tmp, pic_tmp2, seq, pic_rtx;
+ rtx global_offset_table;
+
+ if (current_function_uses_pic_offset_table == 0)
+@@ -1578,7 +1585,10 @@
+
+ seq = gen_sequence ();
+ end_sequence ();
+- emit_insn_after (seq, get_insns ());
++ if (prologue)
++ emit_insn_after (seq, get_insns ());
++ else
++ emit_insn (seq);
+
+ /* Need to emit this whether or not we obey regdecls,
+ since setjmp/longjmp can cause life info to screw up. */
+@@ -5327,7 +5337,13 @@
+ if (frame_pointer_needed)
+ live_regs += 4;
+
+- if (live_regs)
++ if (live_regs == 1 && regs_ever_live[LR_REGNUM]
++ && ! lr_save_eliminated && ! really_return)
++ {
++ output_asm_insn (reverse ? "ldr%?%D0\t%|lr, [%|sp}, #4"
++ : "ldr%?%d0\t%|lr, [%|sp], #4", &operand);
++ }
++ else if (live_regs)
+ {
+ if (lr_save_eliminated || ! regs_ever_live[14])
+ live_regs++;
+@@ -5446,7 +5462,7 @@
+ rtx x;
+
+ length = strlen (name);
+- alignlength = (length + 1) + 3 & ~3;
++ alignlength = ((length + 1) + 3) & ~3;
+
+ ASM_OUTPUT_ASCII (stream, name, length + 1);
+ ASM_OUTPUT_ALIGN (stream, 2);
+@@ -5838,6 +5854,9 @@
+ int store_arg_regs = 0;
+ int volatile_func = (optimize > 0
+ && TREE_THIS_VOLATILE (current_function_decl));
++ rtx ip_rtx;
++ int fp_offset = 0;
++ rtx insn;
+
+ /* Naked functions don't have prologues. */
+ if (arm_naked_function_p (current_function_decl))
+@@ -5859,11 +5878,59 @@
+ live_regs_mask |= 0x4000;
+ }
+
++ ip_rtx = gen_rtx_REG (SImode, IP_REGNUM);
++
+ if (frame_pointer_needed)
+ {
++ if (current_function_needs_context)
++ {
++ /* The Static chain register is the same as the IP register
++ used as a scratch register during stack frame creation.
++ To get around this need to find somewhere to store IP
++ whilst the frame is being created. We try the following
++ places in order:
++
++ 1. An unused argument register.
++ 2. A slot on the stack above the frame. (This only
++ works if the function is not a varargs function).
++
++ If neither of these places is available, we abort (for now). */
++ if (regs_ever_live[3] == 0)
++ {
++ insn = gen_rtx_REG (SImode, 3);
++ insn = gen_rtx_SET (SImode, insn, ip_rtx);
++ insn = emit_insn (insn);
++ RTX_FRAME_RELATED_P (insn) = 1;
++ }
++ else if (current_function_pretend_args_size == 0)
++ {
++ insn = gen_rtx_PRE_DEC (SImode, stack_pointer_rtx);
++ insn = gen_rtx_MEM (SImode, insn);
++ insn = gen_rtx_SET (VOIDmode, insn, ip_rtx);
++ insn = emit_insn (insn);
++ RTX_FRAME_RELATED_P (insn) = 1;
++ fp_offset = 4;
++ }
++ else
++ /* FIXME - the way to handle this situation is to allow
++ the pretend args to be dumped onto the stack, then
++ reuse r3 to save IP. This would involve moving the
++ copying os SP into IP until after the pretend args
++ have been dumped, but this is not too hard. */
++ error ("Unable to find a temporary location for static chanin register");
++ }
++
+ live_regs_mask |= 0xD800;
+- emit_insn (gen_movsi (gen_rtx_REG (SImode, 12),
+- stack_pointer_rtx));
++ if (fp_offset)
++ {
++ insn = gen_rtx_PLUS (SImode, stack_pointer_rtx, GEN_INT (fp_offset));
++ insn = gen_rtx_SET (SImode, ip_rtx, insn);
++ }
++ else
++ insn = gen_movsi (ip_rtx, stack_pointer_rtx);
++
++ insn = emit_insn (insn);
++ RTX_FRAME_RELATED_P (insn) = 1;
+ }
+
+ if (current_function_pretend_args_size)
+@@ -5927,9 +5994,31 @@
+ }
+
+ if (frame_pointer_needed)
+- emit_insn (gen_addsi3 (hard_frame_pointer_rtx, gen_rtx_REG (SImode, 12),
+- (GEN_INT
+- (-(4 + current_function_pretend_args_size)))));
++ {
++ insn = GEN_INT (-(4 + current_function_pretend_args_size + fp_offset));
++ insn = emit_insn (gen_addsi3 (hard_frame_pointer_rtx, ip_rtx, insn));
++ RTX_FRAME_RELATED_P (insn) = 1;
++
++ if (current_function_needs_context)
++ {
++ /* Recover the static chain register. */
++ if (regs_ever_live [3] == 0)
++ {
++ insn = gen_rtx_REG (SImode, 3);
++ insn = gen_rtx_SET (SImode, ip_rtx, insn);
++ insn = emit_insn (insn);
++ RTX_FRAME_RELATED_P (insn) = 1;
++ }
++ else /* if (current_function_pretend_args_size == 0) */
++ {
++ insn = gen_rtx_PLUS (SImode, hard_frame_pointer_rtx, GEN_INT (4));
++ insn = gen_rtx_MEM (SImode, insn);
++ insn = gen_rtx_SET (SImode, ip_rtx, insn);
++ insn = emit_insn (insn);
++ RTX_FRAME_RELATED_P (insn) = 1;
++ }
++ }
++ }
+
+ if (amount != const0_rtx)
+ {
+diff -urN gcc-2.95.3-orig/gcc/config/arm/arm.h gcc-2.95.3/gcc/config/arm/arm.h
+--- gcc-2.95.3-orig/gcc/config/arm/arm.h Thu Jan 25 15:03:26 2001
++++ gcc-2.95.3/gcc/config/arm/arm.h Fri Jul 20 19:39:11 2001
+@@ -601,14 +601,20 @@
+ (TREE_CODE (EXP) == STRING_CST \
+ && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
+
++#ifndef STRUCTURE_SIZE_BOUNDARY
+ /* Every structures size must be a multiple of 32 bits. */
+ /* This is for compatibility with ARMCC. ARM SDT Reference Manual
+ (ARM DUI 0020D) page 2-20 says "Structures are aligned on word
+ boundaries". */
+-#ifndef STRUCTURE_SIZE_BOUNDARY
+-#define STRUCTURE_SIZE_BOUNDARY 32
++/* Setting this to 32 produces more efficient code, but the value set in previous
++ versions of this toolchain was 8, which produces more compact structures. The
++ command line option -mstructure_size_boundary=<n> can be used to change this
++ value. */
++#define STRUCTURE_SIZE_BOUNDARY arm_structure_size_boundary
+ #endif
+
++extern int arm_structure_size_boundary;
++
+ /* Used when parsing command line option -mstructure_size_boundary. */
+ extern const char * structure_size_string;
+
+@@ -768,6 +774,9 @@
+ /* Specify the registers used for certain standard purposes.
+ The values of these macros are register numbers. */
+
++/* Register which holds return address from a subroutine call. */
++#define LR_REGNUM 14
++
+ /* Define this if the program counter is overloaded on a register. */
+ #define PC_REGNUM 15
+
+@@ -777,6 +786,9 @@
+ /* Base register for access to local variables of the function. */
+ #define FRAME_POINTER_REGNUM 25
+
++/* Scratch register - used in all kinds of places, eg trampolines. */
++#define IP_REGNUM 12
++
+ /* Define this to be where the real frame pointer is if it is not possible to
+ work out the offset between the frame pointer and the automatic variables
+ until after register allocation has taken place. FRAME_POINTER_REGNUM
+@@ -798,7 +810,7 @@
+ /* The native (Norcroft) Pascal compiler for the ARM passes the static chain
+ as an invisible last argument (possible since varargs don't exist in
+ Pascal), so the following is not true. */
+-#define STATIC_CHAIN_REGNUM 8
++#define STATIC_CHAIN_REGNUM 12
+
+ /* Register in which address to store a structure value
+ is passed to a function. */
+@@ -1248,7 +1260,12 @@
+ { \
+ int volatile_func = arm_volatile_func (); \
+ if ((FROM) == ARG_POINTER_REGNUM && (TO) == HARD_FRAME_POINTER_REGNUM)\
+- (OFFSET) = 0; \
++ { \
++ if (! current_function_needs_context || ! frame_pointer_needed) \
++ (OFFSET) = 0; \
++ else \
++ (OFFSET) = 4; \
++ } \
+ else if ((FROM) == FRAME_POINTER_REGNUM \
+ && (TO) == STACK_POINTER_REGNUM) \
+ (OFFSET) = (current_function_outgoing_args_size \
+@@ -1379,8 +1396,10 @@
+
+ On the ARM, allow any integer (invalid ones are removed later by insn
+ patterns), nice doubles and symbol_refs which refer to the function's
+- constant pool XXX. */
+-#define LEGITIMATE_CONSTANT_P(X) (! label_mentioned_p (X))
++ constant pool XXX.
++
++ When generating PIC code, allow anything. */
++#define LEGITIMATE_CONSTANT_P(X) (flag_pic || ! label_mentioned_p (X))
+
+ /* Symbols in the text segment can be accessed without indirecting via the
+ constant pool; it may take an extra binary operation, but this is still
+@@ -1496,9 +1515,8 @@
+ && INTVAL (op) <= 31) \
+ goto LABEL; \
+ } \
+- /* NASTY: Since this limits the addressing of unsigned byte loads */ \
+ range = ((MODE) == HImode || (MODE) == QImode) \
+- ? (arm_arch4 ? 256 : 4095) : 4096; \
++ ? (((MODE) == HImode && arm_arch4) ? 256 : 4095) : 4096; \
+ if (code == CONST_INT && INTVAL (INDEX) < range \
+ && INTVAL (INDEX) > -range) \
+ goto LABEL; \
+@@ -1812,14 +1830,15 @@
+ data addresses in memory. */
+ #define PIC_OFFSET_TABLE_REGNUM arm_pic_register
+
+-#define FINALIZE_PIC arm_finalize_pic ()
++#define FINALIZE_PIC arm_finalize_pic (1)
+
+-/* We can't directly access anything that contains a symbol,
++/* We can't directly access anything that contains a symbol or label,
+ nor can we indirect via the constant pool. */
+ #define LEGITIMATE_PIC_OPERAND_P(X) \
+- (! symbol_mentioned_p (X) \
++ (! symbol_mentioned_p (X) && ! label_mentioned_p (X) \
+ && (! CONSTANT_POOL_ADDRESS_P (X) \
+- || ! symbol_mentioned_p (get_pool_constant (X))))
++ || (! symbol_mentioned_p (get_pool_constant (X))) \
++ && (! label_mentioned_p (get_pool_constant (X)))))
+
+ /* We need to know when we are making a constant pool; this determines
+ whether data needs to be in the GOT or can be referenced via a GOT
+@@ -2046,17 +2065,9 @@
+ else output_addr_const(STREAM, X); \
+ }
+
+-/* Handles PIC addr specially */
+ #define OUTPUT_INT_ADDR_CONST(STREAM,X) \
+ { \
+- if (flag_pic && GET_CODE(X) == CONST && is_pic(X)) \
+- { \
+- output_addr_const(STREAM, XEXP (XEXP (XEXP (X, 0), 0), 0)); \
+- fputs(" - (", STREAM); \
+- output_addr_const(STREAM, XEXP (XEXP (XEXP (X, 0), 1), 0)); \
+- fputs(")", STREAM); \
+- } \
+- else output_addr_const(STREAM, X); \
++ output_addr_const(STREAM, X); \
+ \
+ /* Mark symbols as position independent. We only do this in the \
+ .text segment, not in the .data segment. */ \
+@@ -2170,8 +2181,7 @@
+ int arm_return_in_memory PROTO ((Tree));
+ int legitimate_pic_operand_p PROTO ((Rtx));
+ Rtx legitimize_pic_address PROTO ((Rtx, Mmode, Rtx));
+-int is_pic PROTO ((Rtx));
+-void arm_finalize_pic PROTO ((void));
++void arm_finalize_pic PROTO ((int));
+ int arm_rtx_costs RTX_CODE_PROTO ((Rtx, Rcode));
+ int arm_adjust_cost PROTO ((Rtx, Rtx, Rtx, int));
+ int const_double_rtx_ok_for_fpu PROTO ((Rtx));
+diff -urN gcc-2.95.3-orig/gcc/config/arm/arm.md gcc-2.95.3/gcc/config/arm/arm.md
+--- gcc-2.95.3-orig/gcc/config/arm/arm.md Thu Jan 25 15:03:27 2001
++++ gcc-2.95.3/gcc/config/arm/arm.md Fri Jul 20 19:39:11 2001
+@@ -2629,7 +2629,8 @@
+ : preserve_subexpressions_p ()));
+ DONE;
+ }
+- if (CONSTANT_P (operands[1]) && flag_pic)
++ if ((CONSTANT_P (operands[1]) || symbol_mentioned_p (operands[1])
++ || label_mentioned_p (operands[1])) && flag_pic)
+ operands[1] = legitimize_pic_address (operands[1], SImode,
+ ((reload_in_progress
+ || reload_completed)
+@@ -2721,6 +2722,15 @@
+ return \"add%?\\t%0, %|pc, %0\";
+ ")
+
++(define_expand "builtin_setjmp_receiver"
++ [(label_ref (match_operand 0 "" ""))]
++ "flag_pic"
++ "
++{
++ arm_finalize_pic (0);
++ DONE;
++}")
++
+ ;; If copying one reg to another we can set the condition codes according to
+ ;; its value. Such a move is common after a return from subroutine and the
+ ;; result is being tested against zero.
+@@ -6184,15 +6194,20 @@
+ abort ();
+ return \"\";
+ }
+- strcpy (pattern, \"stmfd\\t%m0!, {%1\");
+- for (i = 1; i < XVECLEN (operands[2], 0); i++)
++ if (XVECLEN (operands[2], 0) > 1)
+ {
+- strcat (pattern, \", %|\");
+- strcat (pattern, reg_names[REGNO (XEXP (XVECEXP (operands[2], 0, i),
++ strcpy (pattern, \"stmfd\\t%m0!, {%1\");
++ for (i = 1; i < XVECLEN (operands[2], 0); i++)
++ {
++ strcat (pattern, \", %|\");
++ strcat (pattern, reg_names[REGNO (XEXP (XVECEXP (operands[2], 0, i),
+ 0))]);
++ }
++ strcat (pattern, \"}\");
++ output_asm_insn (pattern, operands);
+ }
+- strcat (pattern, \"}\");
+- output_asm_insn (pattern, operands);
++ else
++ output_asm_insn (\"str\\t%1, [%m0, #-4]!\", operands);
+ return \"\";
+ }"
+ [(set_attr "type" "store4")])
+diff -urN gcc-2.95.3-orig/gcc/config/arm/elf.h gcc-2.95.3/gcc/config/arm/elf.h
+--- gcc-2.95.3-orig/gcc/config/arm/elf.h Mon May 31 10:21:53 1999
++++ gcc-2.95.3/gcc/config/arm/elf.h Fri Jul 20 19:39:11 2001
+@@ -167,15 +167,6 @@
+ #define MULTILIB_DEFAULTS { "mlittle-endian", "msoft-float", "mapcs-32", "mno-thumb-interwork" }
+ #endif
+
+-/* Setting this to 32 produces more efficient code, but the value set in previous
+- versions of this toolchain was 8, which produces more compact structures. The
+- command line option -mstructure_size_boundary=<n> can be used to change this
+- value. */
+-#undef STRUCTURE_SIZE_BOUNDARY
+-#define STRUCTURE_SIZE_BOUNDARY arm_structure_size_boundary
+-
+-extern int arm_structure_size_boundary;
+-
+ /* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS
+ is a valid machine specific attribute for DECL.
+ The attributes in ATTRIBUTES have previously been assigned to DECL. */
+diff -urN gcc-2.95.3-orig/gcc/config/arm/linux-gas.h gcc-2.95.3/gcc/config/arm/linux-gas.h
+--- gcc-2.95.3-orig/gcc/config/arm/linux-gas.h Mon Feb 22 17:47:57 1999
++++ gcc-2.95.3/gcc/config/arm/linux-gas.h Fri Jul 20 19:39:11 2001
+@@ -1,6 +1,6 @@
+ /* Definitions of target machine for GNU compiler.
+ ARM Linux-based GNU systems version.
+- Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
++ Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+ Contributed by Russell King <rmk92@ecs.soton.ac.uk>.
+
+ This file is part of GNU CC.
+@@ -79,5 +79,7 @@
+ register unsigned long _beg __asm ("a1") = (unsigned long) (BEG); \
+ register unsigned long _end __asm ("a2") = (unsigned long) (END); \
+ register unsigned long _flg __asm ("a3") = 0; \
+- __asm __volatile ("swi 0x9f0002"); \
++ __asm __volatile ("swi 0x9f0002 @ sys_cacheflush" \
++ : "=r" (_beg) \
++ : "0" (_beg), "r" (_end), "r" (_flg)); \
+ }
+diff -urN gcc-2.95.3-orig/gcc/config/arm/t-linux gcc-2.95.3/gcc/config/arm/t-linux
+--- gcc-2.95.3-orig/gcc/config/arm/t-linux Fri Mar 26 16:30:20 1999
++++ gcc-2.95.3/gcc/config/arm/t-linux Fri Jul 20 20:46:19 2001
+@@ -1,6 +1,6 @@
+ # Just for these, we omit the frame pointer since it makes such a big
+ # difference. It is then pointless adding debugging.
+-TARGET_LIBGCC2_CFLAGS = -fomit-frame-pointer -fPIC
++TARGET_LIBGCC2_CFLAGS = -fomit-frame-pointer -fPIC
+ LIBGCC2_DEBUG_CFLAGS = -g0
+
+ # Don't build enquire
+diff -urN gcc-2.95.3-orig/gcc/final.c gcc-2.95.3/gcc/final.c
+--- gcc-2.95.3-orig/gcc/final.c Mon Mar 12 13:07:59 2001
++++ gcc-2.95.3/gcc/final.c Fri Jul 20 19:39:11 2001
+@@ -3652,8 +3652,9 @@
+
+ output_addr_const (file, XEXP (x, 0));
+ fprintf (file, "-");
+- if (GET_CODE (XEXP (x, 1)) == CONST_INT
+- && INTVAL (XEXP (x, 1)) < 0)
++ if ((GET_CODE (XEXP (x, 1)) == CONST_INT
++ && INTVAL (XEXP (x, 1)) < 0)
++ || GET_CODE (XEXP (x, 1)) != CONST_INT)
+ {
+ fprintf (file, ASM_OPEN_PAREN);
+ output_addr_const (file, XEXP (x, 1));
+diff -urN gcc-2.95.3-orig/gcc/function.c gcc-2.95.3/gcc/function.c
+--- gcc-2.95.3-orig/gcc/function.c Thu Jan 25 15:03:15 2001
++++ gcc-2.95.3/gcc/function.c Fri Jul 20 19:39:10 2001
+@@ -3053,6 +3053,105 @@
+ extracted by usage MEM with narrower mode. */
+ static rtx purge_addressof_replacements;
+
++/* Return 1 if X and Y are identical-looking rtx's.
++ This is the Lisp function EQUAL for rtx arguments. */
++
++int
++rtx_equal_for_addressof_p (x, y)
++ rtx x, y;
++{
++ register int i;
++ register int j;
++ register enum rtx_code code;
++ register char *fmt;
++
++ if (x == y)
++ return 1;
++ if (x == 0 || y == 0)
++ return 0;
++
++ code = GET_CODE (x);
++ /* Rtx's of different codes cannot be equal. */
++ if (code != GET_CODE (y))
++ return 0;
++
++ /* (MULT:SI x y) and (MULT:HI x y) are NOT equivalent.
++ (REG:SI x) and (REG:HI x) are NOT equivalent.
++ But (MEM:SI x) and (MEM:HI x) are equivalent for our purposes. */
++
++ if (code != MEM && (GET_MODE (x) != GET_MODE (y)))
++ return 0;
++
++ /* REG, LABEL_REF, and SYMBOL_REF can be compared nonrecursively. */
++
++ if (code == REG)
++ return REGNO (x) == REGNO (y);
++ else if (code == LABEL_REF)
++ return XEXP (x, 0) == XEXP (y, 0);
++ else if (code == SYMBOL_REF)
++ return XSTR (x, 0) == XSTR (y, 0);
++ else if (code == SCRATCH || code == CONST_DOUBLE)
++ return 0;
++
++ /* Compare the elements. If any pair of corresponding elements
++ fail to match, return 0 for the whole things. */
++
++ fmt = GET_RTX_FORMAT (code);
++ for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
++ {
++ switch (fmt[i])
++ {
++ case 'w':
++ if (XWINT (x, i) != XWINT (y, i))
++ return 0;
++ break;
++
++ case 'n':
++ case 'i':
++ if (XINT (x, i) != XINT (y, i))
++ return 0;
++ break;
++
++ case 'V':
++ case 'E':
++ /* Two vectors must have the same length. */
++ if (XVECLEN (x, i) != XVECLEN (y, i))
++ return 0;
++
++ /* And the corresponding elements must match. */
++ for (j = 0; j < XVECLEN (x, i); j++)
++ if (rtx_equal_p (XVECEXP (x, i, j), XVECEXP (y, i, j)) == 0)
++ return 0;
++ break;
++
++ case 'e':
++ if (rtx_equal_p (XEXP (x, i), XEXP (y, i)) == 0)
++ return 0;
++ break;
++
++ case 'S':
++ case 's':
++ if (strcmp (XSTR (x, i), XSTR (y, i)))
++ return 0;
++ break;
++
++ case 'u':
++ /* These are just backpointers, so they don't matter. */
++ break;
++
++ case '0':
++ break;
++
++ /* It is believed that rtx's at this level will never
++ contain anything but integers and other rtx's,
++ except for within LABEL_REFs and SYMBOL_REFs. */
++ default:
++ abort ();
++ }
++ }
++ return 1;
++}
++
+ /* Helper function for purge_addressof. See if the rtx expression at *LOC
+ in INSN needs to be changed. If FORCE, always put any ADDRESSOFs into
+ the stack. */
+@@ -3133,7 +3232,7 @@
+ for (tem = purge_bitfield_addressof_replacements;
+ tem != NULL_RTX;
+ tem = XEXP (XEXP (tem, 1), 1))
+- if (rtx_equal_p (x, XEXP (tem, 0)))
++ if (rtx_equal_for_addressof_p (x, XEXP (tem, 0)))
+ {
+ *loc = XEXP (XEXP (tem, 1), 0);
+ return;
+@@ -3143,7 +3242,7 @@
+ for (tem = purge_addressof_replacements;
+ tem != NULL_RTX;
+ tem = XEXP (XEXP (tem, 1), 1))
+- if (rtx_equal_p (XEXP (x, 0), XEXP (tem, 0)))
++ if (rtx_equal_for_addressof_p (XEXP (x, 0), XEXP (tem, 0)))
+ {
+ rtx z = XEXP (XEXP (tem, 1), 0);
+
+diff -urN gcc-2.95.3-orig/gcc/jump.c gcc-2.95.3/gcc/jump.c
+--- gcc-2.95.3-orig/gcc/jump.c Thu Oct 21 08:24:03 1999
++++ gcc-2.95.3/gcc/jump.c Fri Jul 20 19:39:10 2001
+@@ -115,7 +115,7 @@
+ static rtx delete_unreferenced_labels PROTO((rtx));
+ static void delete_noop_moves PROTO((rtx));
+ static int calculate_can_reach_end PROTO((rtx, int, int));
+-static int duplicate_loop_exit_test PROTO((rtx));
++static int duplicate_loop_exit_test PROTO((rtx, int));
+ static void find_cross_jump PROTO((rtx, rtx, int, rtx *, rtx *));
+ static void do_cross_jump PROTO((rtx, rtx, rtx));
+ static int jump_back_p PROTO((rtx, rtx));
+@@ -338,7 +338,7 @@
+ && simplejump_p (temp1))
+ {
+ temp = PREV_INSN (insn);
+- if (duplicate_loop_exit_test (insn))
++ if (duplicate_loop_exit_test (insn, after_regscan))
+ {
+ changed = 1;
+ next = NEXT_INSN (temp);
+@@ -2548,8 +2548,9 @@
+ values of regno_first_uid and regno_last_uid. */
+
+ static int
+-duplicate_loop_exit_test (loop_start)
++duplicate_loop_exit_test (loop_start, after_regscan)
+ rtx loop_start;
++ int after_regscan;
+ {
+ rtx insn, set, reg, p, link;
+ rtx copy = 0, first_copy = 0;
+@@ -2662,6 +2663,9 @@
+ reg_map[REGNO (reg)] = gen_reg_rtx (GET_MODE (reg));
+ }
+ }
++
++ if (after_regscan)
++ reg_scan_update (exitcode, lastexit, max_reg);
+
+ /* Now copy each insn. */
+ for (insn = exitcode; insn != lastexit; insn = NEXT_INSN (insn))
+diff -urN gcc-2.95.3-orig/gcc/varasm.c gcc-2.95.3/gcc/varasm.c
+--- gcc-2.95.3-orig/gcc/varasm.c Mon Feb 19 15:02:02 2001
++++ gcc-2.95.3/gcc/varasm.c Fri Jul 20 19:39:11 2001
+@@ -3286,7 +3286,10 @@
+ value->un.addr.offset = - INTVAL (XEXP (x, 1));
+ }
+ else
+- abort ();
++ {
++ value->un.addr.base = x;
++ value->un.addr.offset = 0;
++ }
+ break;
+
+ default: