linux.h (MD_FALLBACK_FRAME_STATE_FOR): Don't destroy regs->nip.
2003-01-23 Franz Sirl <Franz.Sirl-kernel@lauterbach.com> * config/rs6000/linux.h (MD_FALLBACK_FRAME_STATE_FOR): Don't destroy regs->nip. Fix rt_sigreturn frame layout. Add support for newer kernels. * config/rs6000/rs6000.c (rs6000_binds_local_p): New functiion. (rs6000_encode_section_info): Use it. From-SVN: r61673
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Franz Sirl
Franz Sirl
parent
15d9f946b6
commit
1670ede6be
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@ -1,3 +1,13 @@
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2003-01-23 Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
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PR java/6748
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* config/rs6000/linux.h (MD_FALLBACK_FRAME_STATE_FOR): Don't destroy
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regs->nip. Fix rt_sigreturn frame layout. Add support for newer
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kernels.
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* config/rs6000/rs6000.c (rs6000_binds_local_p): New functiion.
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(rs6000_encode_section_info): Use it.
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2003-01-23 Volker Reichelt <reichelt@igpm.rwth-aachen.de>
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PR other/7341
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@ -1,7 +1,7 @@
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/* Definitions of target machine for GNU compiler,
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for powerpc machines running Linux.
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Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation,
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Inc.
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Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003
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Free Software Foundation, Inc.
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Contributed by Michael Meissner (meissner@cygnus.com).
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This file is part of GNU CC.
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@ -91,12 +91,34 @@ enum { SIGNAL_FRAMESIZE = 64 };
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long new_cfa_; \
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int i_; \
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\
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/* li r0, 0x7777; sc (rt_sigreturn) */ \
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/* li r0, 0x6666; sc (sigreturn) */ \
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if (((*(unsigned int *) (pc_+0) == 0x38007777) \
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|| (*(unsigned int *) (pc_+0) == 0x38006666)) \
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&& (*(unsigned int *) (pc_+4) == 0x44000002)) \
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sc_ = (CONTEXT)->cfa + SIGNAL_FRAMESIZE; \
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/* li r0, 0x7777; sc (sigreturn old) */ \
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/* li r0, 0x0077; sc (sigreturn new) */ \
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/* li r0, 0x6666; sc (rt_sigreturn old) */ \
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/* li r0, 0x00AC; sc (rt_sigreturn new) */ \
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if (*(unsigned int *) (pc_+4) != 0x44000002) \
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break; \
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if (*(unsigned int *) (pc_+0) == 0x38007777 \
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|| *(unsigned int *) (pc_+0) == 0x38000077) \
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{ \
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struct sigframe { \
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char gap[SIGNAL_FRAMESIZE]; \
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struct sigcontext sigctx; \
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} *rt_ = (CONTEXT)->cfa; \
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sc_ = &rt_->sigctx; \
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} \
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else if (*(unsigned int *) (pc_+0) == 0x38006666 \
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|| *(unsigned int *) (pc_+0) == 0x380000AC) \
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{ \
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struct rt_sigframe { \
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char gap[SIGNAL_FRAMESIZE]; \
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unsigned long _unused[2]; \
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struct siginfo *pinfo; \
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void *puc; \
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struct siginfo info; \
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struct ucontext uc; \
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} *rt_ = (CONTEXT)->cfa; \
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sc_ = &rt_->uc.uc_mcontext; \
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} \
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else \
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break; \
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\
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@ -119,11 +141,13 @@ enum { SIGNAL_FRAMESIZE = 64 };
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\
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/* The unwinder expects the IP to point to the following insn, \
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whereas the kernel returns the address of the actual \
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faulting insn. */ \
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sc_->regs->nip += 4; \
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faulting insn. We store NIP+4 in an unused register slot to \
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get the same result for multiple evaluation of the same signal \
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frame. */ \
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sc_->regs->gpr[47] = sc_->regs->nip + 4; \
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(FS)->regs.reg[CR0_REGNO].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[CR0_REGNO].loc.offset \
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= (long)&(sc_->regs->nip) - new_cfa_; \
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= (long)&(sc_->regs->gpr[47]) - new_cfa_; \
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(FS)->retaddr_column = CR0_REGNO; \
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goto SUCCESS; \
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} while (0)
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@ -1,6 +1,6 @@
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/* Subroutines used for code generation on IBM RS/6000.
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Copyright (C) 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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2000, 2001, 2002 Free Software Foundation, Inc.
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2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
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This file is part of GNU CC.
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@ -155,6 +155,7 @@ static void rs6000_elf_asm_out_destructor PARAMS ((rtx, int));
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#ifdef OBJECT_FORMAT_COFF
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static void xcoff_asm_named_section PARAMS ((const char *, unsigned int));
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#endif
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static bool rs6000_binds_local_p PARAMS ((tree));
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static int rs6000_adjust_cost PARAMS ((rtx, rtx, rtx, int));
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static int rs6000_adjust_priority PARAMS ((rtx, int));
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static int rs6000_issue_rate PARAMS ((void));
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@ -10939,7 +10940,45 @@ rs6000_unique_section (decl, reloc)
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DECL_SECTION_NAME (decl) = build_string (len, string);
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}
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static bool
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rs6000_binds_local_p (exp)
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tree exp;
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{
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bool local_p;
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tree attr;
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/* A non-decl is an entry in the constant pool. */
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if (!DECL_P (exp))
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local_p = true;
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/* Static variables are always local. */
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else if (! TREE_PUBLIC (exp))
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local_p = true;
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/* Otherwise, variables defined outside this object may not be local. */
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else if (DECL_EXTERNAL (exp))
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local_p = false;
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/* Linkonce and weak data are never local. */
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else if (DECL_ONE_ONLY (exp) || DECL_WEAK (exp))
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local_p = false;
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/* If PIC, then assume that any global name can be overridden by
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* symbols resolved from other modules. */
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else if (flag_pic || rs6000_flag_pic)
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local_p = false;
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/* Uninitialized COMMON variable may be unified with symbols
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* resolved from other modules. */
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else if (DECL_COMMON (exp)
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&& (DECL_INITIAL (exp) == NULL
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|| DECL_INITIAL (exp) == error_mark_node))
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local_p = false;
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/* Otherwise we're left with initialized (or non-common) global data
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* which is of necessity defined locally. */
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else
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local_p = true;
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return local_p;
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}
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/* If we are referencing a function that is static or is known to be
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in this file, make the SYMBOL_REF special. We can use this to indicate
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that we can branch to this function without emitting a no-op after the
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@ -10955,12 +10994,7 @@ rs6000_encode_section_info (decl)
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if (TREE_CODE (decl) == FUNCTION_DECL)
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{
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rtx sym_ref = XEXP (DECL_RTL (decl), 0);
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if (!TREE_PUBLIC (decl)
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|| (!DECL_EXTERNAL (decl)
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&& !DECL_ONE_ONLY (decl)
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&& !DECL_WEAK (decl)
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&& !flag_pic
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&& !rs6000_flag_pic))
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if (rs6000_binds_local_p (decl))
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SYMBOL_REF_FLAG (sym_ref) = 1;
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if (DEFAULT_ABI == ABI_AIX)
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@ -10979,11 +11013,15 @@ rs6000_encode_section_info (decl)
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&& DEFAULT_ABI == ABI_V4
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&& TREE_CODE (decl) == VAR_DECL)
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{
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rtx sym_ref = XEXP (DECL_RTL (decl), 0);
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int size = int_size_in_bytes (TREE_TYPE (decl));
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tree section_name = DECL_SECTION_NAME (decl);
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const char *name = (char *)0;
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int len = 0;
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if (rs6000_binds_local_p (decl))
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SYMBOL_REF_FLAG (sym_ref) = 1;
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if (section_name)
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{
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if (TREE_CODE (section_name) == STRING_CST)
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