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Re: QNX MIPS Support Patch
- From: Jeff Baker <jbaker at qnx dot com>
- To: Thiemo Seufer <ica2_ts at csv dot ica dot uni-stuttgart dot de>
- Cc: binutils at sources dot redhat dot com
- Date: Mon, 13 Sep 2004 15:03:54 -0400
- Subject: Re: QNX MIPS Support Patch
- Organization: QNX Software Systems Ltd.
- References: <20040826223243.GJ18189@rembrandt.csv.ica.uni-stuttgart.de>
- Reply-to: jbaker at qnx dot com
Sorry it took so long to reply. I got onto something else for a while.
I've attached updated versions of all but the ugly mips patch. I
separated the ChangeLog entries in each patch by dir and included
qnx_changelog.patch, which is all of the ChangeLogs merged together.
Thiemo Seufer wrote:
Jeff Baker wrote:
[snip]
qnx_shared_textrel.patch - This patch adds the --warn-shared-textrel
option to the linker. This option, oddly enough, warns when a
DT_TEXTREL is being added to a shared object.
I can't approve this one.
Can't because it's not your area or can't because it's no good?
It looks good IMHO, but it is outside the mips area.
[snip]
- A patch to add support for QNX MIPS PIC to the BFD.
What is the accepted way of switching on our modifications without
using
the ifdefs (they were never meant to be permanent, I just don't know
how
else to do it yet)?
The object files should have some identification as being QNX PIC
specific (probably a .note section?), and BFD should switch
behaviour accordingly.
[snip]
2004-08-26 Jeff Baker <jbaker@qnx.com>
* bfd/libbfd.h: Add new reloc: R_MIPS_QNX_COPY.
* bfd/elf32-mips.c: Likewise.
* bfd/bfd-in2.h: Likewise.
* bfd/reloc.c: Likewise.
* include/elf/mips.h: Likewise.
Ok, but note that bfd/ChangeLog and include/elf/ChangeLog are in
different subdirectories. When you commit, add the entry to the nearest
ChangeLog in the tree, with proper relative paths. E.g. for bfd:
2004-08-26 Jeff Baker <jbaker@qnx.com>
* libbfd.h: Add new reloc: R_MIPS_QNX_COPY.
* elf32-mips.c: Likewise.
* bfd-in2.h: Likewise.
* reloc.c: Likewise.
[snip]
2004-08-26 Jeff Baker <jbaker@qnx.com>
* config/tc-mips.c (QNX_GP_REG): Define.
(load_address): Added code to handle QNX_PIC pic level.
(macro): Likewise.
(mips_validate_fix): Likewise.
(mips_fix_adjustable): Likewise.
(s_cpsetup): Likewise.
(s_cplocal): Likewise.
(s_cprestore): Likewise.
(s_cpreturn): Likewise.
(s_cpadd): Likewise.
(s_gpvalue): Likewise.
(s_gpword): Likewise.
(s_gpdword): Likewise.
(md_longopts): Define qnx_pic command line argument.
(md_parse_option): Handle qnx_pic command line argument.
(s_qnxpiccalls): New function.
(s_noqnxpiccalls): New function.
* config/tc-mips.h (mips_pic_level): Add QNX_PIC pic
level.
[snip]
@@ -3877,21 +3882,21 @@ load_address (int reg, expressionS *ep,
mips_gp_register, BFD_RELOC_GPREL16);
relax_switch ();
}
macro_build_lui (ep, reg);
macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j",
reg, reg, BFD_RELOC_LO16);
if (mips_relax.sequence)
relax_end ();
}
}
- else if (mips_pic == SVR4_PIC && ! mips_big_got)
+ else if ((mips_pic == SVR4_PIC || mips_pic == QNX_PIC) && !
mips_big_got)
A common mips_pic_p macro would be nicer.
[snip]
@@ -5062,21 +5067,21 @@ macro (struct mips_cl_insn *ip)
load_delay_nop ();
macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t",
treg, AT, breg);
breg = 0;
tempreg = treg;
}
add_got_offset_hilo (tempreg, &offset_expr, AT);
used_at = 1;
}
}
- else if (mips_pic == SVR4_PIC && ! mips_big_got && HAVE_NEWABI)
+ else if ((mips_pic == SVR4_PIC || mips_pic == QNX_PIC) && !
mips_big_got && HAVE_NEWABI)
Is there some plan to implement a NewABI variant as well? If yes,
add at least a TODO comment to the relevant s_cp*/s_gp* functions.
If no, don't check for QNX_PIC in NewABI code.
[snip]
@@ -5467,61 +5472,64 @@ macro (struct mips_cl_insn *ip)
/* The jal instructions must be handled as macros because when
generating PIC code they expand to multi-instruction
sequences. Normally they are simple instructions. */
case M_JAL_1:
dreg = RA;
/* Fall through. */
case M_JAL_2:
if (mips_pic == NO_PIC)
macro_build (NULL, "jalr", "d,s", dreg, sreg);
- else if (mips_pic == SVR4_PIC)
+ else if (mips_pic == SVR4_PIC || mips_pic == QNX_PIC)
{
- if (sreg != PIC_CALL_REG)
+ if ((sreg != PIC_CALL_REG) && (mips_pic != QNX_PIC))
as_warn (_("MIPS PIC call to register other than $25"));
Does QNX PIC use different registers for calls?
[snip]
@@ -5578,20 +5586,28 @@ macro (struct mips_cl_insn *ip)
relax_end ();
}
macro_build_jalr (&offset_expr);
}
else
{
relax_start (offset_expr.X_add_symbol);
if (! mips_big_got)
{
+ if(mips_pic != QNX_PIC)
+ macro_build (&offset_expr,
+ ((bfd_arch_bits_per_address (stdoutput) == 32
+ || ! ISA_HAS_64BIT_REGS (mips_opts.isa))
+ ? "lw" : "ld"),
+ "t,o(b)", PIC_CALL_REG,
+ (int) BFD_RELOC_MIPS_CALL16, mips_gp_register);
+ else
macro_build (&offset_expr, ADDRESS_LOAD_INSN,
"t,o(b)",
PIC_CALL_REG, BFD_RELOC_MIPS_CALL16,
mips_gp_register);
This chunk is apparently some old code, and completely superfluous.
[snip]
@@ -10120,20 +10138,22 @@ struct option md_longopts[] =
#define OPTION_64 (OPTION_ELF_BASE + 6)
{"64", no_argument, NULL, OPTION_64},
#define OPTION_MDEBUG (OPTION_ELF_BASE + 7)
{"mdebug", no_argument, NULL, OPTION_MDEBUG},
#define OPTION_NO_MDEBUG (OPTION_ELF_BASE + 8)
{"no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG},
#define OPTION_PDR (OPTION_ELF_BASE + 9)
{"mpdr", no_argument, NULL, OPTION_PDR},
#define OPTION_NO_PDR (OPTION_ELF_BASE + 10)
{"mno-pdr", no_argument, NULL, OPTION_NO_PDR},
+#define OPTION_QNX_PIC (OPTION_ELF_BASE + 11)
+ {"qnx_pic", no_argument, NULL, OPTION_QNX_PIC},
#endif /* OBJ_ELF */
[snip]
+ case OPTION_QNX_PIC:
+ if (OUTPUT_FLAVOR != bfd_target_elf_flavour)
+ {
+ as_bad ("-qnx_pic is supported only for ELF format");
+ return 0;
+ }
I would prefer more gcc-like options, with an inverse, and probably
without underscore. E.g:
-mqnx-pic
-mno-qnx-pic
If that causes a problem with backward compatibility, -qnx_pic could be
retained as alias for -mqnx-pic.
[snip]
/* Handle the .cpload pseudo-op. This is used when generating SVR4
PIC code. It sets the $gp register for the function based on the
function address, which is in the register named in the argument.
This uses a relocation against _gp_disp, which is handled
specially
by the linker. The result is:
lui $gp,%hi(_gp_disp)
addiu $gp,$gp,%lo(_gp_disp)
addu $gp,$gp,.cpload argument
- The .cpload argument is normally $25 == $t9. */
+ The .cpload argument is normally $25 == $t9.
+
+ In the case of QNX pic code, we always compute the full address
+ of the GOT, therefore we do:
+ bltzal 0, 0f
+ nop
+ 0: lui $23, %hi(_gp_disp)
+ addiu $23, $23, %lo(_gp_disp)
+ addu $23, $23, $31
+ One possible optimization would be to move the opcode
+ right before the bltzal into the nop slot. */
Below, this optimization is done, so the comment should reflect that.
Out of curiosity: Why isn't simply the lui moved into the branch delay
slot? At least it would always be a valid optimization.
static void
s_cpload (int ignore ATTRIBUTE_UNUSED)
{
expressionS ex;
/* If we are not generating SVR4 PIC code, or if this is NewABI
code,
.cpload is ignored. */
- if (mips_pic != SVR4_PIC || HAVE_NEWABI)
+ if ((mips_pic != SVR4_PIC && mips_pic != QNX_PIC) || HAVE_NEWABI)
{
s_ignore (0);
return;
}
/* .cpload should be in a .set noreorder section. */
- if (mips_opts.noreorder == 0)
+ if ((mips_opts.noreorder == 0) && (mips_pic != QNX_PIC))
as_warn (_(".cpload not in noreorder section"));
ex.X_op = O_symbol;
ex.X_add_symbol = symbol_find_or_make ("_gp_disp");
ex.X_op_symbol = NULL;
ex.X_add_number = 0;
/* In ELF, this symbol is implicitly an STT_OBJECT symbol. */
symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT;
+ if (mips_pic == QNX_PIC) {
+ expressionS ep;
+ /* In our case, we do a bltzal first to get the current IP,
and
In MIPS lingua, it is "PC", not "IP". :-)
+ * then add the offset to the got... Thus, we always do
"cpload $31"
+ */
+ ep.X_op = O_constant;
+ ep.X_add_number = 4;
+ tc_get_register(0); // Flush any arg to cpload...
No C99 comments, please.
+ /* See if we can swap the bltzal with the previous insn and
save
+ * the nop...
+ * For simplicity, we only check that the insn is a move or
sw,
+ * which are really the only two we should encounter.
+ * If it is anything else, we don't swap for now.
+ */
+ if(0 && (mips_optimize > 1)
+ && prev_insn_valid
+ && (mips_opts.isa > 1)
+ && !(mips_opts.noreorder)
+ && (((prev_insn.insn_opcode & 0xfc1f07ff) ==
0x00000021)
+ || ((prev_insn.insn_opcode & 0xfc000000) ==
0xac000000)))
+ {
+ char *prev_f;
+ char temp[4];
+
+ prev_f = prev_insn_frag->fr_literal +
prev_insn_where;
+ memcpy (temp, prev_f, 4);
+ *(unsigned long *)(prev_f) = 0x04100001;
+ macro_build (&ep,
+ "bltzal", "s,p", 0);
Formatting, ...
+ prev_f = prev_insn_frag->fr_literal +
prev_insn_where;
+ memcpy (prev_f, temp, 4);
+ mips_opts.noreorder ++;
^
..., formatting, ...
+ }
+ else
+ { /* We need a NOP... */
+ mips_opts.noreorder ++;
+ macro_build (&ep,
+ "bltzal", "s,p", 0);
+ macro_build ((expressionS *) NULL, "nop", "");
..., old K&R casts, ...
+ }
+ macro_build_lui (&ex, 23);
+ macro_build (&ex, "addiu", "t,r,j", 23, 23,
+ (int) BFD_RELOC_LO16);
..., and magic constants instead of QNX_GP_REG aka mips_gp_register, ...
+ mips_opts.noreorder --;
+
+ macro_build ((expressionS *) NULL, "addu", "d,v,t",
+ 23, 23, RA);
+ } else
+ {
+
macro_start ();
macro_build_lui (&ex, mips_gp_register);
macro_build (&ex, "addiu", "t,r,j", mips_gp_register,
mips_gp_register, BFD_RELOC_LO16);
macro_build (NULL, "addu", "d,v,t", mips_gp_register,
mips_gp_register, tc_get_register (0));
macro_end ();
+}
... and a suspiciously absent macro_start()/macro_end() pair.
[snip]
@@ -12743,20 +12869,28 @@ mips_fix_adjustable (fixS *fixp)
if (fixp->fx_r_type == BFD_RELOC_MIPS16_JMP)
return 0;
if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT
|| fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
return 0;
if (fixp->fx_addsy == NULL)
return 1;
+ if ((mips_pic == QNX_PIC) &&
+ (fixp->fx_r_type == BFD_RELOC_MIPS_GOT16 || fixp->fx_r_type
== BFD_RELOC_32))
Line length formatting.
[snip]
2004-08-26 Jeff Baker <jbaker@qnx.com>
* ltconfig (nto-qnx*): Add support for QNX OS suffix.
* bfd/config.bfd (mips*eb-*-nto*): New target.
(mips*-*-nto*): New target.
* gas/configure (mips*-*-nto*): New target.
* gas/configure.in: Likewise.
* ld/Makefile.am: Add targets for QNX MIPS emulation files.
* ld/Makefile.in: Likewise.
* ld/configure.tgt(mips*-*-nto*): New target.
* ld/emulparams/elf32bmipnto.sh: New file. QNX MIPS
emulation.
* ld/emulparams/elf32lmipnto.sh: New file. QNX MIPS
emulation.
This also needs to be split in the respective subdirectory's ChangeLogs.
[snip]
--- bfd/config.bfd 19 Aug 2004 18:09:44 -0000 1.169
+++ bfd/config.bfd 26 Aug 2004 19:45:29 -0000
@@ -829,20 +829,30 @@ case "${targ}" in
targ_selvecs=ecoff_little_vec
;;
mips*el-*-elf* | mips*el-*-rtems* | mips*el-*-vxworks* |
mips*-*-chorus*)
targ_defvec=bfd_elf32_littlemips_vec
targ_selvecs="bfd_elf32_bigmips_vec bfd_elf64_bigmips_vec
bfd_elf64_littlemips_vec"
;;
mips*-*-elf* | mips*-*-rtems* | mips*-*-vxworks | mips*-*-windiss)
targ_defvec=bfd_elf32_bigmips_vec
targ_selvecs="bfd_elf32_littlemips_vec bfd_elf64_bigmips_vec
bfd_elf64_littlemips_vec"
;;
+ mips*eb-*-nto*)
+ targ_defvec=bfd_elf32_bigmips_vec
+ targ_selvecs="bfd_elf32_littlemips_vec"
+ targ_cflags=-D__QNXTARGET__
+ ;;
+ mips*-*-nto*)
+ targ_defvec=bfd_elf32_littlemips_vec
+ targ_selvecs="bfd_elf32_bigmips_vec"
+ targ_cflags=-D__QNXTARGET__
+ ;;
Please don't define __QNXTARGET__. :-)
[snip]
Index: ld/configure.tgt
===================================================================
RCS file: /cvs/src/src/ld/configure.tgt,v
retrieving revision 1.154
diff -w -u -1 -0 -p -r1.154 configure.tgt
--- ld/configure.tgt 19 Aug 2004 18:11:42 -0000 1.154
+++ ld/configure.tgt 26 Aug 2004 19:45:35 -0000
@@ -421,20 +421,23 @@ mips*-*-netbsd*) targ_emul=elf32bmip
;;
mips*-*-bsd*) targ_emul=mipsbig ;;
mips*vr4300el-*-elf*) targ_emul=elf32l4300 ;;
mips*vr4300-*-elf*) targ_emul=elf32b4300 ;;
mips*vr4100el-*-elf*) targ_emul=elf32l4300 ;;
mips*vr4100-*-elf*) targ_emul=elf32b4300 ;;
mips*vr5000el-*-elf*) targ_emul=elf32l4300 ;;
mips*vr5000-*-elf*) targ_emul=elf32b4300 ;;
mips*el-*-elf*) targ_emul=elf32elmip ;;
mips*-*-elf*) targ_emul=elf32ebmip ;;
+mips*-*-nto*) targ_emul=elf32lmipnto
+ targ_extra_emuls="elf32bmipnto"
+ ;;
I think this wants an additional mips*eb*-*-nto* with the big endian
emulation as default.
Thiemo
(/)
2004-09-13 Jeff Baker <jbaker@qnx.com>
* ltconfig (nto-qnx*): Add support for QNX OS suffix.
(/bfd)
2004-09-13 Jeff Baker <jbaker@qnx.com>
* config.bfd (mips*eb-*-nto*): New target.
(mips*-*-nto*): New target.
* libbfd.h: Add new reloc: R_MIPS_QNX_COPY.
* elf32-mips.c: Likewise.
* bfd-in2.h: Likewise.
* reloc.c: Likewise.
* elflink.c (_bfd_elf_add_dynamic_entry): Add code to
warn if adding a DT_TEXTREL to a shared object and
--warn-shared-textrel was specified
(/include)
2004-09-13 Jeff Baker <jbaker@qnx.com>
* bfdlink.h (bfd_link_info): Add boolean
warn_shared_textrel.
(/include/elf)
2004-09-13 Jeff Baker <jbaker@qnx.com>
* mips.h: Add new reloc: R_MIPS_QNX_COPY
(/gas)
2004-08-26 Jeff Baker <jbaker@qnx.com>
* configure (mips*-*-nto*): New target.
* configure.in: Likewise.
* config/tc-mips.c (QNX_GP_REG): Define.
(mips_pic_p): Define.
(load_address): Added code to handle QNX_PIC pic level.
(macro): Likewise.
(mips_validate_fix): Likewise.
(mips_fix_adjustable): Likewise.
(s_cpsetup): Likewise.
(s_cplocal): Likewise.
(s_cprestore): Likewise.
(s_cpreturn): Likewise.
(s_cpadd): Likewise.
(s_gpvalue): Likewise.
(s_gpword): Likewise.
(s_gpdword): Likewise.
(md_estimate_size_before_relax): Likewise.
(md_longopts): Define qnx_pic command line argument.
(md_parse_option): Handle qnx_pic command line argument.
(s_qnxpiccalls): New function.
(s_noqnxpiccalls): New function.
* config/tc-mips.h (mips_pic_level): Add QNX_PIC pic
level.
(/ld)
2004-09-13 Jeff Baker <jbaker@qnx.com>
* Makefile.am: Add targets for QNX MIPS emulation files.
* Makefile.in: Likewise.
* configure.tgt(mips*-*-nto*): New target.
(mips*eb*-*-nto*): New target.
* emulparams/elf32bmipnto.sh: New file. QNX MIPS
emulation.
* emulparams/elf32lmipnto.sh: New file. QNX MIPS
emulation
* lexsup.c: Handle --warn-shared-textrel option.
2004-09-13 Jeff Baker <jbaker@qnx.com>
* libbfd.h: Add new reloc: R_MIPS_QNX_COPY.
* elf32-mips.c: Likewise.
* bfd-in2.h: Likewise.
* reloc.c: Likewise.
2004-09-13 Jeff Baker <jbaker@qnx.com>
* mips.h: Add new reloc: R_MIPS_QNX_COPY.
Index: bfd/libbfd.h
===================================================================
RCS file: /cvs/src/src/bfd/libbfd.h,v
retrieving revision 1.123
diff -w -u -1 -0 -p -r1.123 libbfd.h
--- bfd/libbfd.h 28 Aug 2004 03:05:18 -0000 1.123
+++ bfd/libbfd.h 13 Sep 2004 18:27:28 -0000
@@ -912,21 +912,21 @@ static const char *const bfd_reloc_code_
"BFD_RELOC_MIPS_SHIFT6",
"BFD_RELOC_MIPS_INSERT_A",
"BFD_RELOC_MIPS_INSERT_B",
"BFD_RELOC_MIPS_DELETE",
"BFD_RELOC_MIPS_HIGHEST",
"BFD_RELOC_MIPS_HIGHER",
"BFD_RELOC_MIPS_SCN_DISP",
"BFD_RELOC_MIPS_REL16",
"BFD_RELOC_MIPS_RELGOT",
"BFD_RELOC_MIPS_JALR",
-
+ "BFD_RELOC_MIPS_QNX_COPY",
"BFD_RELOC_FRV_LABEL16",
"BFD_RELOC_FRV_LABEL24",
"BFD_RELOC_FRV_LO16",
"BFD_RELOC_FRV_HI16",
"BFD_RELOC_FRV_GPREL12",
"BFD_RELOC_FRV_GPRELU12",
"BFD_RELOC_FRV_GPREL32",
"BFD_RELOC_FRV_GPRELHI",
"BFD_RELOC_FRV_GPRELLO",
"BFD_RELOC_FRV_GOT12",
Index: bfd/elf32-mips.c
===================================================================
RCS file: /cvs/src/src/bfd/elf32-mips.c,v
retrieving revision 1.178
diff -w -u -1 -0 -p -r1.178 elf32-mips.c
--- bfd/elf32-mips.c 29 Jun 2004 13:46:30 -0000 1.178
+++ bfd/elf32-mips.c 13 Sep 2004 18:27:36 -0000
@@ -592,20 +592,41 @@ static reloc_howto_type elf_mips16_gprel
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
mips16_gprel_reloc, /* special_function */
"R_MIPS16_GPREL", /* name */
TRUE, /* partial_inplace */
0x07ff001f, /* src_mask */
0x07ff001f, /* dst_mask */
FALSE); /* pcrel_offset */
+/* Do a QNX pic copy relocation. This is used only with dynamic linking.
+ This works in the same way as copy relocs on other platforms: the data
+ object must exist both in the object and in the shared lib. The dynamic
+ linker copies the data from the shared object to the executable at runtime.
+ This is needed because the exec. does not access the data through the GOT.
+ */
+static reloc_howto_type elf_mips_qnx_copy_howto =
+ HOWTO (R_MIPS_QNX_COPY, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_QNX_COPY", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE); /* pcrel_offset */
+
/* 16 bit offset for pc-relative branches. */
static reloc_howto_type elf_mips_gnu_rel16_s2 =
HOWTO (R_MIPS_GNU_REL16_S2, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
@@ -1039,21 +1060,22 @@ static const struct elf_reloc_map mips_r
{ BFD_RELOC_16_PCREL, R_MIPS_PC16 },
{ BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
{ BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
{ BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
{ BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
{ BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
{ BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
{ BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
{ BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
{ BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
- { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP }
+ { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP },
+ { BFD_RELOC_MIPS_QNX_COPY, R_MIPS_QNX_COPY }
};
/* Given a BFD reloc type, return a howto structure. */
static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
{
unsigned int i;
reloc_howto_type *howto_table = elf_mips_howto_table_rel;
Index: bfd/bfd-in2.h
===================================================================
RCS file: /cvs/src/src/bfd/bfd-in2.h,v
retrieving revision 1.298
diff -w -u -1 -0 -p -r1.298 bfd-in2.h
--- bfd/bfd-in2.h 28 Aug 2004 03:05:18 -0000 1.298
+++ bfd/bfd-in2.h 13 Sep 2004 18:27:44 -0000
@@ -2361,20 +2361,21 @@ to compensate for the borrow when the lo
BFD_RELOC_MIPS_SHIFT6,
BFD_RELOC_MIPS_INSERT_A,
BFD_RELOC_MIPS_INSERT_B,
BFD_RELOC_MIPS_DELETE,
BFD_RELOC_MIPS_HIGHEST,
BFD_RELOC_MIPS_HIGHER,
BFD_RELOC_MIPS_SCN_DISP,
BFD_RELOC_MIPS_REL16,
BFD_RELOC_MIPS_RELGOT,
BFD_RELOC_MIPS_JALR,
+ BFD_RELOC_MIPS_QNX_COPY,
/* Fujitsu Frv Relocations. */
BFD_RELOC_FRV_LABEL16,
BFD_RELOC_FRV_LABEL24,
BFD_RELOC_FRV_LO16,
BFD_RELOC_FRV_HI16,
BFD_RELOC_FRV_GPREL12,
BFD_RELOC_FRV_GPRELU12,
BFD_RELOC_FRV_GPREL32,
Index: bfd/reloc.c
===================================================================
RCS file: /cvs/src/src/bfd/reloc.c,v
retrieving revision 1.111
diff -w -u -1 -0 -p -r1.111 reloc.c
--- bfd/reloc.c 25 Aug 2004 12:54:14 -0000 1.111
+++ bfd/reloc.c 13 Sep 2004 18:27:51 -0000
@@ -2105,20 +2105,22 @@ ENUMX
ENUMX
BFD_RELOC_MIPS_HIGHER
ENUMX
BFD_RELOC_MIPS_SCN_DISP
ENUMX
BFD_RELOC_MIPS_REL16
ENUMX
BFD_RELOC_MIPS_RELGOT
ENUMX
BFD_RELOC_MIPS_JALR
+ENUMX
+ BFD_RELOC_MIPS_QNX_COPY
ENUMDOC
MIPS ELF relocations.
COMMENT
ENUM
BFD_RELOC_FRV_LABEL16
ENUMX
BFD_RELOC_FRV_LABEL24
ENUMX
BFD_RELOC_FRV_LO16
Index: include/elf/mips.h
===================================================================
RCS file: /cvs/src/src/include/elf/mips.h,v
retrieving revision 1.23
diff -w -u -1 -0 -p -r1.23 mips.h
--- include/elf/mips.h 14 Jun 2004 18:25:10 -0000 1.23
+++ include/elf/mips.h 13 Sep 2004 18:28:08 -0000
@@ -69,20 +69,22 @@ START_RELOC_NUMBERS (elf_mips_reloc_type
RELOC_NUMBER (R_MIPS_SCN_DISP, 32)
RELOC_NUMBER (R_MIPS_REL16, 33)
RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34)
RELOC_NUMBER (R_MIPS_PJUMP, 35)
RELOC_NUMBER (R_MIPS_RELGOT, 36)
RELOC_NUMBER (R_MIPS_JALR, 37)
RELOC_NUMBER (R_MIPS_max, 38)
/* These relocs are used for the mips16. */
RELOC_NUMBER (R_MIPS16_26, 100)
RELOC_NUMBER (R_MIPS16_GPREL, 101)
+ /* And this is used with QNX pic for data copy relocs */
+ RELOC_NUMBER (R_MIPS_QNX_COPY, 126)
/* This was a GNU extension used by embedded-PIC. It was co-opted by
mips-linux for exception-handling data. It is no longer used, but
should continue to be supported by the linker for backward
compatibility. (GCC stopped using it in May, 2004.) */
RELOC_NUMBER (R_MIPS_PC32, 248)
/* FIXME: this relocation is used internally by gas. */
RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250)
/* These are GNU extensions to enable C++ vtable garbage collection. */
RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253)
RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254)
2004-08-26 Jeff Baker <jbaker@qnx.com>
* config/tc-mips.c (QNX_GP_REG): Define.
(mips_pic_p): Define.
(load_address): Added code to handle QNX_PIC pic level.
(macro): Likewise.
(mips_validate_fix): Likewise.
(mips_fix_adjustable): Likewise.
(s_cpsetup): Likewise.
(s_cplocal): Likewise.
(s_cprestore): Likewise.
(s_cpreturn): Likewise.
(s_cpadd): Likewise.
(s_gpvalue): Likewise.
(s_gpword): Likewise.
(s_gpdword): Likewise.
(md_estimate_size_before_relax): Likewise.
(md_longopts): Define qnx_pic command line argument.
(md_parse_option): Handle qnx_pic command line argument.
(s_qnxpiccalls): New function.
(s_noqnxpiccalls): New function.
* config/tc-mips.h (mips_pic_level): Add QNX_PIC pic
level
Index: gas/config/tc-mips.c
===================================================================
RCS file: /cvs/src/src/gas/config/tc-mips.c,v
retrieving revision 1.270
diff -w -u -1 -0 -p -r1.270 tc-mips.c
--- gas/config/tc-mips.c 18 Aug 2004 15:58:11 -0000 1.270
+++ gas/config/tc-mips.c 13 Sep 2004 18:37:52 -0000
@@ -84,20 +84,21 @@ int mips_flag_pdr = TRUE;
#endif
#include "ecoff.h"
#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
static char *mips_regmask_frag;
#endif
#define ZERO 0
#define AT 1
+#define QNX_GP_REG 23
#define TREG 24
#define PIC_CALL_REG 25
#define KT0 26
#define KT1 27
#define GP 28
#define SP 29
#define FP 30
#define RA 31
#define ILLEGAL_REG (32)
@@ -376,20 +377,22 @@ static int mips_32bitmode = 0;
from coprocessor registers after they are loaded from memory, and
thus does not require nops to be inserted. This applies to
instructions marked INSN_COPROC_MEMORY_DELAY. These nops are only
requires at MIPS ISA level I. */
#define cop_mem_interlocks (mips_opts.isa != ISA_MIPS1)
/* Is this a mfhi or mflo instruction? */
#define MF_HILO_INSN(PINFO) \
((PINFO & INSN_READ_HI) || (PINFO & INSN_READ_LO))
+#define mips_pic_p (mips_pic == SVR4_PIC || mips_pic == QNX_PIC)
+
/* MIPS PIC level. */
enum mips_pic_level mips_pic;
/* 1 if we should generate 32 bit offsets from the $gp register in
SVR4_PIC mode. Currently has no meaning in other modes. */
static int mips_big_got = 0;
/* 1 if trap instructions should used for overflow rather than break
instructions. */
@@ -877,20 +880,22 @@ static size_t my_getSmallExpression
static void my_getExpression (expressionS *, char *);
static void s_align (int);
static void s_change_sec (int);
static void s_change_section (int);
static void s_cons (int);
static void s_float_cons (int);
static void s_mips_globl (int);
static void s_option (int);
static void s_mipsset (int);
static void s_abicalls (int);
+static void s_qnxpiccalls PARAMS ((int));
+static void s_noqnxpiccalls PARAMS ((int));
static void s_cpload (int);
static void s_cpsetup (int);
static void s_cplocal (int);
static void s_cprestore (int);
static void s_cpreturn (int);
static void s_gpvalue (int);
static void s_gpword (int);
static void s_gpdword (int);
static void s_cpadd (int);
static void s_insn (int);
@@ -943,20 +948,22 @@ static const struct mips_cpu_info *mips_
static const pseudo_typeS mips_pseudo_table[] =
{
/* MIPS specific pseudo-ops. */
{"option", s_option, 0},
{"set", s_mipsset, 0},
{"rdata", s_change_sec, 'r'},
{"sdata", s_change_sec, 's'},
{"livereg", s_ignore, 0},
{"abicalls", s_abicalls, 0},
+ {"qnxpiccalls", s_qnxpiccalls, 0},
+ {"noqnxpiccalls", s_noqnxpiccalls, 0},
{"cpload", s_cpload, 0},
{"cpsetup", s_cpsetup, 0},
{"cplocal", s_cplocal, 0},
{"cprestore", s_cprestore, 0},
{"cpreturn", s_cpreturn, 0},
{"gpvalue", s_gpvalue, 0},
{"gpword", s_gpword, 0},
{"gpdword", s_gpdword, 0},
{"cpadd", s_cpadd, 0},
{"insn", s_insn, 0},
@@ -3877,21 +3884,21 @@ load_address (int reg, expressionS *ep,
mips_gp_register, BFD_RELOC_GPREL16);
relax_switch ();
}
macro_build_lui (ep, reg);
macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j",
reg, reg, BFD_RELOC_LO16);
if (mips_relax.sequence)
relax_end ();
}
}
- else if (mips_pic == SVR4_PIC && ! mips_big_got)
+ else if ((mips_pic_p) && ! mips_big_got)
{
expressionS ex;
/* If this is a reference to an external symbol, we want
lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16)
Otherwise we want
lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16)
nop
addiu $reg,$reg,<sym> (BFD_RELOC_LO16)
If there is a constant, it must be added in after.
@@ -3938,21 +3945,21 @@ load_address (int reg, expressionS *ep,
if (ex.X_add_number != 0)
{
if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000)
as_bad (_("PIC code offset overflow (max 16 signed bits)"));
ex.X_op = O_constant;
macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j",
reg, reg, BFD_RELOC_LO16);
}
}
}
- else if (mips_pic == SVR4_PIC)
+ else if (mips_pic_p)
{
expressionS ex;
/* This is the large GOT case. If this is a reference to an
external symbol, we want
lui $reg,<sym> (BFD_RELOC_MIPS_GOT_HI16)
addu $reg,$reg,$gp
lw $reg,<sym>($reg) (BFD_RELOC_MIPS_GOT_LO16)
Otherwise, for a reference to a local symbol in old ABI, we want
@@ -4969,21 +4976,21 @@ macro (struct mips_cl_insn *ip)
tempreg, mips_gp_register, BFD_RELOC_GPREL16);
relax_switch ();
}
macro_build_lui (&offset_expr, tempreg);
macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j",
tempreg, tempreg, BFD_RELOC_LO16);
if (mips_relax.sequence)
relax_end ();
}
}
- else if (mips_pic == SVR4_PIC && ! mips_big_got && ! HAVE_NEWABI)
+ else if ((mips_pic_p) && ! mips_big_got && ! HAVE_NEWABI)
{
int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16;
/* If this is a reference to an external symbol, and there
is no constant, we want
lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16)
or for lca or if tempreg is PIC_CALL_REG
lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16)
For a local symbol, we want
lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16)
@@ -5165,21 +5172,21 @@ macro (struct mips_cl_insn *ip)
macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg,
BFD_RELOC_MIPS_GOT_DISP, mips_gp_register);
relax_end ();
}
else
{
macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg,
BFD_RELOC_MIPS_GOT_DISP, mips_gp_register);
}
}
- else if (mips_pic == SVR4_PIC && ! HAVE_NEWABI)
+ else if ((mips_pic_p) && ! HAVE_NEWABI)
{
int gpdelay;
int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16;
int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16;
int local_reloc_type = (int) BFD_RELOC_MIPS_GOT16;
/* This is the large GOT case. If this is a reference to an
external symbol, and there is no constant, we want
lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16)
addu $tempreg,$tempreg,$gp
@@ -5467,61 +5474,64 @@ macro (struct mips_cl_insn *ip)
/* The jal instructions must be handled as macros because when
generating PIC code they expand to multi-instruction
sequences. Normally they are simple instructions. */
case M_JAL_1:
dreg = RA;
/* Fall through. */
case M_JAL_2:
if (mips_pic == NO_PIC)
macro_build (NULL, "jalr", "d,s", dreg, sreg);
- else if (mips_pic == SVR4_PIC)
+ else if (mips_pic_p)
{
- if (sreg != PIC_CALL_REG)
+ if ((sreg != PIC_CALL_REG) && (mips_pic != QNX_PIC))
as_warn (_("MIPS PIC call to register other than $25"));
macro_build (NULL, "jalr", "d,s", dreg, sreg);
if (! HAVE_NEWABI)
{
- if (mips_cprestore_offset < 0)
+ if (mips_cprestore_offset < 0){
+ if (mips_pic != QNX_PIC)
as_warn (_("No .cprestore pseudo-op used in PIC code"));
+ }
else
{
if (! mips_frame_reg_valid)
{
as_warn (_("No .frame pseudo-op used in PIC code"));
/* Quiet this warning. */
mips_frame_reg_valid = 1;
}
if (! mips_cprestore_valid)
{
+ if (mips_pic != QNX_PIC)
as_warn (_("No .cprestore pseudo-op used in PIC code"));
/* Quiet this warning. */
mips_cprestore_valid = 1;
}
expr1.X_add_number = mips_cprestore_offset;
macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN,
mips_gp_register,
mips_frame_reg,
HAVE_64BIT_ADDRESSES);
}
}
}
else
abort ();
return;
case M_JAL_A:
if (mips_pic == NO_PIC)
macro_build (&offset_expr, "jal", "a");
- else if (mips_pic == SVR4_PIC)
+ else if (mips_pic_p)
{
/* If this is a reference to an external symbol, and we are
using a small GOT, we want
lw $25,<sym>($gp) (BFD_RELOC_MIPS_CALL16)
nop
jalr $ra,$25
nop
lw $gp,cprestore($sp)
The cprestore value is set using the .cprestore
pseudo-op. If we are using a big GOT, we want
@@ -5610,22 +5620,24 @@ macro (struct mips_cl_insn *ip)
}
macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)",
PIC_CALL_REG, BFD_RELOC_MIPS_GOT16,
mips_gp_register);
load_delay_nop ();
macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j",
PIC_CALL_REG, PIC_CALL_REG, BFD_RELOC_LO16);
relax_end ();
macro_build_jalr (&offset_expr);
- if (mips_cprestore_offset < 0)
+ if (mips_cprestore_offset < 0) {
+ if (mips_pic != QNX_PIC)
as_warn (_("No .cprestore pseudo-op used in PIC code"));
+ }
else
{
if (! mips_frame_reg_valid)
{
as_warn (_("No .frame pseudo-op used in PIC code"));
/* Quiet this warning. */
mips_frame_reg_valid = 1;
}
if (! mips_cprestore_valid)
{
@@ -6010,21 +6022,21 @@ macro (struct mips_cl_insn *ip)
}
macro_build_lui (&offset_expr, tempreg);
macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t",
tempreg, tempreg, breg);
macro_build (&offset_expr, s, fmt, treg,
BFD_RELOC_LO16, tempreg);
if (mips_relax.sequence)
relax_end ();
}
}
- else if (mips_pic == SVR4_PIC && ! mips_big_got)
+ else if ((mips_pic_p) && ! mips_big_got)
{
int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16;
/* If this is a reference to an external symbol, we want
lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16)
nop
<op> $treg,0($tempreg)
Otherwise we want
lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16)
nop
@@ -6068,21 +6080,21 @@ macro (struct mips_cl_insn *ip)
relax_start (offset_expr.X_add_symbol);
relax_switch ();
macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg,
tempreg, BFD_RELOC_LO16);
relax_end ();
if (breg != 0)
macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t",
tempreg, tempreg, breg);
macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg);
}
- else if (mips_pic == SVR4_PIC && ! HAVE_NEWABI)
+ else if ((mips_pic_p) && ! HAVE_NEWABI)
{
int gpdelay;
/* If this is a reference to an external symbol, we want
lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16)
addu $tempreg,$tempreg,$gp
lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16)
<op> $treg,0($tempreg)
Otherwise we want
lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16)
@@ -6238,21 +6250,21 @@ macro (struct mips_cl_insn *ip)
}
return;
}
/* We know that sym is in the .rdata section. First we get the
upper 16 bits of the address. */
if (mips_pic == NO_PIC)
{
macro_build_lui (&offset_expr, AT);
}
- else if (mips_pic == SVR4_PIC)
+ else if (mips_pic_p)
{
macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT,
BFD_RELOC_MIPS_GOT16, mips_gp_register);
}
else
abort ();
/* Now we load the register(s). */
if (HAVE_64BIT_GPRS)
macro_build (&offset_expr, "ld", "t,o(b)", treg, BFD_RELOC_LO16, AT);
@@ -6310,21 +6322,21 @@ macro (struct mips_cl_insn *ip)
BFD_RELOC_MIPS_LITERAL, mips_gp_register);
return;
}
breg = mips_gp_register;
r = BFD_RELOC_MIPS_LITERAL;
goto dob;
}
else
{
assert (strcmp (s, RDATA_SECTION_NAME) == 0);
- if (mips_pic == SVR4_PIC)
+ if (mips_pic_p)
macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT,
BFD_RELOC_MIPS_GOT16, mips_gp_register);
else
{
/* FIXME: This won't work for a 64 bit address. */
macro_build_lui (&offset_expr, AT);
}
if (mips_opts.isa != ISA_MIPS1)
{
@@ -6524,21 +6536,21 @@ macro (struct mips_cl_insn *ip)
macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg,
BFD_RELOC_LO16, AT);
/* FIXME: How do we handle overflow here? */
offset_expr.X_add_number += 4;
/* Itbl support may require additional care here. */
macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1,
BFD_RELOC_LO16, AT);
if (mips_relax.sequence)
relax_end ();
}
- else if (mips_pic == SVR4_PIC && ! mips_big_got)
+ else if ((mips_pic_p) && ! mips_big_got)
{
/* If this is a reference to an external symbol, we want
lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16)
nop
<op> $treg,0($at)
<op> $treg+1,4($at)
Otherwise we want
lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16)
nop
<op> $treg,<sym>($at) (BFD_RELOC_LO16)
@@ -6571,21 +6583,21 @@ macro (struct mips_cl_insn *ip)
relax_switch ();
macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg,
BFD_RELOC_LO16, AT);
offset_expr.X_add_number += 4;
macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1,
BFD_RELOC_LO16, AT);
relax_end ();
mips_optimize = hold_mips_optimize;
}
- else if (mips_pic == SVR4_PIC)
+ else if (mips_pic_p)
{
int gpdelay;
/* If this is a reference to an external symbol, we want
lui $at,<sym> (BFD_RELOC_MIPS_GOT_HI16)
addu $at,$at,$gp
lw $at,<sym>($at) (BFD_RELOC_MIPS_GOT_LO16)
nop
<op> $treg,0($at)
<op> $treg+1,4($at)
@@ -10120,20 +10132,25 @@ struct option md_longopts[] =
#define OPTION_64 (OPTION_ELF_BASE + 6)
{"64", no_argument, NULL, OPTION_64},
#define OPTION_MDEBUG (OPTION_ELF_BASE + 7)
{"mdebug", no_argument, NULL, OPTION_MDEBUG},
#define OPTION_NO_MDEBUG (OPTION_ELF_BASE + 8)
{"no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG},
#define OPTION_PDR (OPTION_ELF_BASE + 9)
{"mpdr", no_argument, NULL, OPTION_PDR},
#define OPTION_NO_PDR (OPTION_ELF_BASE + 10)
{"mno-pdr", no_argument, NULL, OPTION_NO_PDR},
+#define OPTION_QNX_PIC (OPTION_ELF_BASE + 11)
+ {"qnx_pic", no_argument, NULL, OPTION_QNX_PIC},
+ {"mqnx-pic", no_argument, NULL, OPTION_QNX_PIC},
+#define OPTION_NO_QNX_PIC (OPTION_ELF_BASE + 12)
+ {"mno-qnx-pic", no_argument, NULL, OPTION_NO_QNX_PIC},
#endif /* OBJ_ELF */
{NULL, no_argument, NULL, 0}
};
size_t md_longopts_size = sizeof (md_longopts);
/* Set STRING_PTR (either &mips_arch_string or &mips_tune_string) to
NEW_VALUE. Warn if another value was already specified. Note:
we have to defer parsing the -march and -mtune arguments in order
to handle 'from-abi' correctly, since the ABI might be specified
@@ -10461,20 +10478,42 @@ md_parse_option (int c, char *arg)
mips_flag_mdebug = FALSE;
break;
case OPTION_PDR:
mips_flag_pdr = TRUE;
break;
case OPTION_NO_PDR:
mips_flag_pdr = FALSE;
break;
+
+ case OPTION_QNX_PIC:
+ if (OUTPUT_FLAVOR != bfd_target_elf_flavour)
+ {
+ as_bad ("QNX PIC is supported only for ELF format");
+ return 0;
+ }
+ mips_pic = QNX_PIC;
+ mips_gp_register = QNX_GP_REG;
+ if (g_switch_seen && g_switch_value != 0)
+ {
+ as_bad ("-G may not be used with QNX PIC code");
+ return 0;
+ }
+ g_switch_value = 0;
+ break;
+
+ case OPTION_NO_QNX_PIC:
+ mips_pic = NO_PIC;
+ mips_gp_register = GP;
+ break;
+
#endif /* OBJ_ELF */
default:
return 0;
}
return 1;
}
/* Set up globals to generate code for the ISA or processor
@@ -10865,21 +10904,21 @@ mips_validate_fix (struct fix *fixP, ase
else if (S_GET_SEGMENT (fixP->fx_addsy) != seg)
{
as_bad_where (fixP->fx_file, fixP->fx_line,
_("Cannot branch to symbol in another section."));
fixP->fx_done = 1;
}
else if (S_IS_EXTERNAL (fixP->fx_addsy))
{
symbolS *sym = fixP->fx_addsy;
- if (mips_pic == SVR4_PIC)
+ if (mips_pic_p)
as_warn_where (fixP->fx_file, fixP->fx_line,
_("Pretending global symbol used as branch target is local."));
fixP->fx_addsy = symbol_create (S_GET_NAME (sym),
S_GET_SEGMENT (sym),
S_GET_VALUE (sym),
symbol_get_frag (sym));
copy_symbol_attributes (fixP->fx_addsy, sym);
S_CLEAR_EXTERNAL (fixP->fx_addsy);
assert (symbol_resolved_p (sym));
@@ -11759,62 +11798,150 @@ s_abicalls (int ignore ATTRIBUTE_UNUSED)
mips_abicalls = TRUE;
if (g_switch_seen && g_switch_value != 0)
as_warn (_("-G may not be used with SVR4 PIC code"));
g_switch_value = 0;
bfd_set_gp_size (stdoutput, 0);
demand_empty_rest_of_line ();
}
+/* This handles the .qnxpiccalls pseudo-op.i */
+
+static void
+s_qnxpiccalls (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ mips_pic = QNX_PIC;
+ mips_gp_register = QNX_GP_REG;
+ if (g_switch_seen && g_switch_value != 0)
+ as_warn ("-G may not be used with QNX PIC code");
+ g_switch_value = 0;
+ bfd_set_gp_size (stdoutput, 0);
+ demand_empty_rest_of_line ();
+}
+
+/* Allows us to turn off PIC code gen, in case that is needed */
+
+static void
+s_noqnxpiccalls (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ mips_pic = NO_PIC;
+ mips_gp_register = GP;
+ demand_empty_rest_of_line ();
+}
+
+
/* Handle the .cpload pseudo-op. This is used when generating SVR4
PIC code. It sets the $gp register for the function based on the
function address, which is in the register named in the argument.
This uses a relocation against _gp_disp, which is handled specially
by the linker. The result is:
lui $gp,%hi(_gp_disp)
addiu $gp,$gp,%lo(_gp_disp)
addu $gp,$gp,.cpload argument
- The .cpload argument is normally $25 == $t9. */
+ The .cpload argument is normally $25 == $t9.
+
+ In the case of QNX pic code, we always compute the full address
+ of the GOT, therefore we do:
+ bltzal 0, 0f
+ 0: lui $23, %hi(_gp_disp)
+ addiu $23, $23, %lo(_gp_disp)
+ addu $23, $23, $31
+*/
static void
s_cpload (int ignore ATTRIBUTE_UNUSED)
{
expressionS ex;
/* If we are not generating SVR4 PIC code, or if this is NewABI code,
.cpload is ignored. */
if (mips_pic != SVR4_PIC || HAVE_NEWABI)
{
s_ignore (0);
return;
}
/* .cpload should be in a .set noreorder section. */
- if (mips_opts.noreorder == 0)
+ if ((mips_opts.noreorder == 0) && (mips_pic != QNX_PIC))
as_warn (_(".cpload not in noreorder section"));
ex.X_op = O_symbol;
ex.X_add_symbol = symbol_find_or_make ("_gp_disp");
ex.X_op_symbol = NULL;
ex.X_add_number = 0;
/* In ELF, this symbol is implicitly an STT_OBJECT symbol. */
symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT;
+ if (mips_pic == QNX_PIC) {
+ expressionS ep;
+ /* In our case, we do a bltzal first to get the current PC, and
+ * then add the offset to the got... Thus, we always do "cpload $31"
+ */
+ ep.X_op = O_constant;
+ ep.X_add_number = 4;
+ tc_get_register(0);
+
+ /* See if we can swap the bltzal with the previous insn and save
+ * the nop...
+ * For simplicity, we only check that the insn is a move or sw,
+ * which are really the only two we should encounter.
+ * If it is anything else, we don't swap for now.
+ */
+ if(0 && (mips_optimize > 1)
+ && prev_insn_valid
+ && (mips_opts.isa > 1)
+ && !(mips_opts.noreorder)
+ && (((prev_insn.insn_opcode & 0xfc1f07ff) == 0x00000021)
+ || ((prev_insn.insn_opcode & 0xfc000000) == 0xac000000)))
+ {
+ char *prev_f;
+ char temp[4];
+
+ prev_f = prev_insn_frag->fr_literal + prev_insn_where;
+ memcpy (temp, prev_f, 4);
+ *(unsigned long *)(prev_f) = 0x04100001;
+ macro_build (&ep, "bltzal", "s,p", 0);
+
+ prev_f = prev_insn_frag->fr_literal + prev_insn_where;
+ memcpy (prev_f, temp, 4);
+ mips_opts.noreorder ++;
+ }
+ else
+ { /* We need a NOP... */
+ mips_opts.noreorder ++;
+ macro_build (&ep, "bltzal", "s,p", 0);
+ macro_build (NULL, "nop", "");
+ }
+ macro_start ();
+ macro_build_lui (&ex, QNX_GP_REG);
+ macro_build (&ex, "addiu", "t,r,j", QNX_GP_REG, QNX_GP_REG,
+ (int) BFD_RELOC_LO16);
+ mips_opts.noreorder --;
+
+ macro_build ((expressionS *) NULL, "addu", "d,v,t",
+ QNX_GP_REG, QNX_GP_REG, RA);
+ macro_end ();
+ } else
+ {
+
macro_start ();
macro_build_lui (&ex, mips_gp_register);
macro_build (&ex, "addiu", "t,r,j", mips_gp_register,
mips_gp_register, BFD_RELOC_LO16);
macro_build (NULL, "addu", "d,v,t", mips_gp_register,
mips_gp_register, tc_get_register (0));
macro_end ();
+}
demand_empty_rest_of_line ();
}
/* Handle the .cpsetup pseudo-op defined for NewABI PIC code. The syntax is:
.cpsetup $reg1, offset|$reg2, label
If offset is given, this results in:
sd $gp, offset($sp)
lui $gp, %hi(%neg(%gp_rel(label)))
@@ -11830,21 +11957,21 @@ s_cpload (int ignore ATTRIBUTE_UNUSED)
static void
s_cpsetup (int ignore ATTRIBUTE_UNUSED)
{
expressionS ex_off;
expressionS ex_sym;
int reg1;
char *f;
/* If we are not generating SVR4 PIC code, .cpsetup is ignored.
We also need NewABI support. */
- if (mips_pic != SVR4_PIC || ! HAVE_NEWABI)
+ if ((mips_pic != SVR4_PIC && mips_pic != QNX_PIC)|| ! HAVE_NEWABI)
{
s_ignore (0);
return;
}
reg1 = tc_get_register (0);
SKIP_WHITESPACE ();
if (*input_line_pointer != ',')
{
as_bad (_("missing argument separator ',' for .cpsetup"));
@@ -11912,21 +12039,21 @@ s_cpsetup (int ignore ATTRIBUTE_UNUSED)
macro_end ();
demand_empty_rest_of_line ();
}
static void
s_cplocal (int ignore ATTRIBUTE_UNUSED)
{
/* If we are not generating SVR4 PIC code, or if this is not NewABI code,
.cplocal is ignored. */
- if (mips_pic != SVR4_PIC || ! HAVE_NEWABI)
+ if ((mips_pic != SVR4_PIC && mips_pic != QNX_PIC) || ! HAVE_NEWABI)
{
s_ignore (0);
return;
}
mips_gp_register = tc_get_register (0);
demand_empty_rest_of_line ();
}
/* Handle the .cprestore pseudo-op. This stores $gp into a given
@@ -11969,21 +12096,21 @@ s_cprestore (int ignore ATTRIBUTE_UNUSED
If a register $reg2 was given there, it results in:
daddu $gp, $reg2, $0
*/
static void
s_cpreturn (int ignore ATTRIBUTE_UNUSED)
{
expressionS ex;
/* If we are not generating SVR4 PIC code, .cpreturn is ignored.
We also need NewABI support. */
- if (mips_pic != SVR4_PIC || ! HAVE_NEWABI)
+ if ((mips_pic != SVR4_PIC && mips_pic != QNX_PIC) || ! HAVE_NEWABI)
{
s_ignore (0);
return;
}
macro_start ();
if (mips_cpreturn_register == -1)
{
ex.X_op = O_constant;
ex.X_add_symbol = NULL;
@@ -12001,21 +12128,21 @@ s_cpreturn (int ignore ATTRIBUTE_UNUSED)
}
/* Handle the .gpvalue pseudo-op. This is used when generating NewABI PIC
code. It sets the offset to use in gp_rel relocations. */
static void
s_gpvalue (int ignore ATTRIBUTE_UNUSED)
{
/* If we are not generating SVR4 PIC code, .gpvalue is ignored.
We also need NewABI support. */
- if (mips_pic != SVR4_PIC || ! HAVE_NEWABI)
+ if ((mips_pic != SVR4_PIC && mips_pic != QNX_PIC) || ! HAVE_NEWABI)
{
s_ignore (0);
return;
}
mips_gprel_offset = get_absolute_expression ();
demand_empty_rest_of_line ();
}
@@ -12023,21 +12150,21 @@ s_gpvalue (int ignore ATTRIBUTE_UNUSED)
code. It generates a 32 bit GP relative reloc. */
static void
s_gpword (int ignore ATTRIBUTE_UNUSED)
{
symbolS *label;
expressionS ex;
char *p;
/* When not generating PIC code, this is treated as .word. */
- if (mips_pic != SVR4_PIC)
+ if (mips_pic != SVR4_PIC && mips_pic != QNX_PIC)
{
s_cons (2);
return;
}
label = insn_labels != NULL ? insn_labels->label : NULL;
mips_emit_delays (TRUE);
if (auto_align)
mips_align (2, 0, label);
mips_clear_insn_labels ();
@@ -12059,21 +12186,21 @@ s_gpword (int ignore ATTRIBUTE_UNUSED)
}
static void
s_gpdword (int ignore ATTRIBUTE_UNUSED)
{
symbolS *label;
expressionS ex;
char *p;
/* When not generating PIC code, this is treated as .dword. */
- if (mips_pic != SVR4_PIC)
+ if (mips_pic != SVR4_PIC && mips_pic != QNX_PIC)
{
s_cons (3);
return;
}
label = insn_labels != NULL ? insn_labels->label : NULL;
mips_emit_delays (TRUE);
if (auto_align)
mips_align (3, 0, label);
mips_clear_insn_labels ();
@@ -12103,21 +12230,21 @@ s_gpdword (int ignore ATTRIBUTE_UNUSED)
/* Handle the .cpadd pseudo-op. This is used when dealing with switch
tables in SVR4 PIC code. */
static void
s_cpadd (int ignore ATTRIBUTE_UNUSED)
{
int reg;
/* This is ignored when not generating SVR4 PIC code. */
- if (mips_pic != SVR4_PIC)
+ if (mips_pic != SVR4_PIC && mips_pic != QNX_PIC)
{
s_ignore (0);
return;
}
/* Add $gp to the register named as an argument. */
macro_start ();
reg = tc_get_register (0);
macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", reg, reg, mips_gp_register);
macro_end ();
@@ -12698,34 +12825,33 @@ relaxed_branch_length (fragS *fragp, ase
encoded in the subtype information. For the mips16, we have to
decide whether we are using an extended opcode or not. */
int
md_estimate_size_before_relax (fragS *fragp, asection *segtype)
{
int change;
if (RELAX_BRANCH_P (fragp->fr_subtype))
{
-
fragp->fr_var = relaxed_branch_length (fragp, segtype, FALSE);
return fragp->fr_var;
}
if (RELAX_MIPS16_P (fragp->fr_subtype))
/* We don't want to modify the EXTENDED bit here; it might get us
into infinite loops. We change it only in mips_relax_frag(). */
return (RELAX_MIPS16_EXTENDED (fragp->fr_subtype) ? 4 : 2);
if (mips_pic == NO_PIC)
change = nopic_need_relax (fragp->fr_symbol, 0);
- else if (mips_pic == SVR4_PIC)
+ else if (mips_pic_p)
change = pic_need_relax (fragp->fr_symbol, segtype);
else
abort ();
if (change)
{
fragp->fr_subtype |= RELAX_USE_SECOND;
return -RELAX_FIRST (fragp->fr_subtype);
}
else
@@ -12743,20 +12869,29 @@ mips_fix_adjustable (fixS *fixp)
if (fixp->fx_r_type == BFD_RELOC_MIPS16_JMP)
return 0;
if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT
|| fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
return 0;
if (fixp->fx_addsy == NULL)
return 1;
+ if ((mips_pic == QNX_PIC) &&
+ (fixp->fx_r_type == BFD_RELOC_MIPS_GOT16
+ || fixp->fx_r_type == BFD_RELOC_32))
+ {
+ symbolS * sym = fixp->fx_addsy;
+ if (S_IS_EXTERN(sym) || S_IS_WEAK(sym)) return 0;
+ }
+
+
/* If symbol SYM is in a mergeable section, relocations of the form
SYM + 0 can usually be made section-relative. The mergeable data
is then identified by the section offset rather than by the symbol.
However, if we're generating REL LO16 relocations, the offset is split
between the LO16 and parterning high part relocation. The linker will
need to recalculate the complete offset in order to correctly identify
the merge data.
The linker has traditionally not looked for the parterning high part
Index: gas/config/tc-mips.h
===================================================================
RCS file: /cvs/src/src/gas/config/tc-mips.h,v
retrieving revision 1.35
diff -w -u -1 -0 -p -r1.35 tc-mips.h
--- gas/config/tc-mips.h 29 Apr 2004 05:14:22 -0000 1.35
+++ gas/config/tc-mips.h 13 Sep 2004 18:38:03 -0000
@@ -68,20 +68,23 @@ extern const char *mips_target_format (v
/* MIPS PIC level. */
enum mips_pic_level
{
/* Do not generate PIC code. */
NO_PIC,
/* Generate PIC code as in the SVR4 MIPS ABI. */
SVR4_PIC,
+
+ /* Generate QNX PIC code. */
+ QNX_PIC,
};
extern enum mips_pic_level mips_pic;
struct mips_cl_insn
{
unsigned long insn_opcode;
const struct mips_opcode *insn_mo;
/* The next two fields are used when generating mips16 code. */
bfd_boolean use_extend;
2004-09-13 Jeff Baker <jbaker@qnx.com>
* ltconfig (nto-qnx*): Add support for QNX OS suffix.
2004-09-13 Jeff Baker <jbaker@qnx.com>
* config.bfd (mips*eb-*-nto*): New target.
(mips*-*-nto*): New target.
2004-09-13 Jeff Baker <jbaker@qnx.com>
* configure (mips*-*-nto*): New target.
* configure.in: Likewise.
2004-09-13 Jeff Baker <jbaker@qnx.com>
* Makefile.am: Add targets for QNX MIPS emulation files.
* Makefile.in: Likewise.
* configure.tgt(mips*-*-nto*): New target.
(mips*eb*-*-nto*): New target.
* emulparams/elf32bmipnto.sh: New file. QNX MIPS
emulation.
* emulparams/elf32lmipnto.sh: New file. QNX MIPS
emulation
Index: ltconfig
===================================================================
RCS file: /cvs/src/src/ltconfig,v
retrieving revision 1.21
diff -w -u -1 -0 -p -r1.21 ltconfig
--- ltconfig 21 Jul 2004 19:21:41 -0000 1.21
+++ ltconfig 13 Sep 2004 18:32:11 -0000
@@ -1389,20 +1389,31 @@ dgux*)
sysv4*MP*)
if test -d /usr/nec ;then
version_type=linux
library_names_spec='$libname.so.$versuffix $libname.so.$major $libname.so'
soname_spec='$libname.so.$major'
shlibpath_var=LD_LIBRARY_PATH
fi
;;
+nto-qnx*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so$major $libname.so'
+ soname_spec='${libname}${release}.so$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ deplibs_check_method='pass_all'
+ ;;
+
*)
dynamic_linker=no
;;
esac
echo "$ac_t$dynamic_linker" 1>&6
test "$dynamic_linker" = no && can_build_shared=no
# Check for command to grab the raw symbol name followed by C symbol from nm.
echo $ac_n "checking command to parse $NM output... $ac_c" 1>&6
Index: bfd/config.bfd
===================================================================
RCS file: /cvs/src/src/bfd/config.bfd,v
retrieving revision 1.170
diff -w -u -1 -0 -p -r1.170 config.bfd
--- bfd/config.bfd 3 Sep 2004 17:15:31 -0000 1.170
+++ bfd/config.bfd 13 Sep 2004 18:32:22 -0000
@@ -833,20 +833,30 @@ case "${targ}" in
targ_selvecs=ecoff_little_vec
;;
mips*el-*-elf* | mips*el-*-rtems* | mips*el-*-vxworks* | mips*-*-chorus*)
targ_defvec=bfd_elf32_littlemips_vec
targ_selvecs="bfd_elf32_bigmips_vec bfd_elf64_bigmips_vec bfd_elf64_littlemips_vec"
;;
mips*-*-elf* | mips*-*-rtems* | mips*-*-vxworks | mips*-*-windiss)
targ_defvec=bfd_elf32_bigmips_vec
targ_selvecs="bfd_elf32_littlemips_vec bfd_elf64_bigmips_vec bfd_elf64_littlemips_vec"
;;
+ mips*eb-*-nto*)
+ targ_defvec=bfd_elf32_bigmips_vec
+ targ_selvecs="bfd_elf32_littlemips_vec"
+ targ_cflags=-D__QNXTARGET__
+ ;;
+ mips*-*-nto*)
+ targ_defvec=bfd_elf32_littlemips_vec
+ targ_selvecs="bfd_elf32_bigmips_vec"
+ targ_cflags=-D__QNXTARGET__
+ ;;
mips*-*-none)
targ_defvec=bfd_elf32_bigmips_vec
targ_selvecs="bfd_elf32_littlemips_vec bfd_elf64_bigmips_vec bfd_elf64_littlemips_vec"
;;
mips*el-*-openbsd*)
targ_defvec=bfd_elf32_littlemips_vec
targ_selvecs="bfd_elf32_bigmips_vec bfd_elf64_bigmips_vec bfd_elf64_littlemips_vec ecoff_little_vec ecoff_big_vec"
;;
mips*-*-openbsd*)
targ_defvec=bfd_elf32_bigmips_vec
Index: gas/configure
===================================================================
RCS file: /cvs/src/src/gas/configure,v
retrieving revision 1.177
diff -w -u -1 -0 -p -r1.177 configure
--- gas/configure 3 Sep 2004 17:15:37 -0000 1.177
+++ gas/configure 13 Sep 2004 18:32:31 -0000
@@ -4437,20 +4437,21 @@ echo "$as_me: error: Unknown vendor for
mips-*-ecoff*) fmt=ecoff ;;
mips-*-pe*) fmt=coff endian=little em=pe ;;
mips-*-irix6*) fmt=elf em=irix ;;
mips-*-irix5*) fmt=elf em=irix ;;
mips-*-irix*) fmt=ecoff em=irix ;;
mips-*-lnews*) fmt=ecoff em=lnews ;;
mips-*-riscos*) fmt=ecoff ;;
mips*-*-linux*) fmt=elf em=tmips ;;
mips-*-sysv4*MP* | mips-*-gnu*) fmt=elf em=tmips ;;
mips-*-sysv*) fmt=ecoff ;;
+ mips*-*-nto*) fmt=elf ;;
mips-*-elf* | mips-*-rtems*) fmt=elf ;;
mips-*-netbsd*) fmt=elf ;;
mips-*-openbsd*) fmt=elf ;;
mmix-*-*) fmt=elf ;;
mn10200-*-*) fmt=elf ;;
# cpu_type for am33_2.0 is set to mn10300
mn10300-*-linux*) fmt=elf bfd_gas=yes em=linux ;;
mn10300-*-*) fmt=elf ;;
Index: gas/configure.in
===================================================================
RCS file: /cvs/src/src/gas/configure.in,v
retrieving revision 1.161
diff -w -u -1 -0 -p -r1.161 configure.in
--- gas/configure.in 3 Sep 2004 17:15:40 -0000 1.161
+++ gas/configure.in 13 Sep 2004 18:32:35 -0000
@@ -389,20 +389,21 @@ changequote([,])dnl
mips-*-ecoff*) fmt=ecoff ;;
mips-*-pe*) fmt=coff endian=little em=pe ;;
mips-*-irix6*) fmt=elf em=irix ;;
mips-*-irix5*) fmt=elf em=irix ;;
mips-*-irix*) fmt=ecoff em=irix ;;
mips-*-lnews*) fmt=ecoff em=lnews ;;
mips-*-riscos*) fmt=ecoff ;;
mips*-*-linux*) fmt=elf em=tmips ;;
mips-*-sysv4*MP* | mips-*-gnu*) fmt=elf em=tmips ;;
mips-*-sysv*) fmt=ecoff ;;
+ mips*-*-nto*) fmt=elf ;;
mips-*-elf* | mips-*-rtems*) fmt=elf ;;
mips-*-netbsd*) fmt=elf ;;
mips-*-openbsd*) fmt=elf ;;
mmix-*-*) fmt=elf ;;
mn10200-*-*) fmt=elf ;;
# cpu_type for am33_2.0 is set to mn10300
mn10300-*-linux*) fmt=elf bfd_gas=yes em=linux ;;
mn10300-*-*) fmt=elf ;;
Index: ld/Makefile.am
===================================================================
RCS file: /cvs/src/src/ld/Makefile.am,v
retrieving revision 1.158
diff -w -u -1 -0 -p -r1.158 Makefile.am
--- ld/Makefile.am 3 Sep 2004 17:15:43 -0000 1.158
+++ ld/Makefile.am 13 Sep 2004 18:32:47 -0000
@@ -146,35 +146,37 @@ ALL_EMULATIONS = \
edelta68.o \
eelf32_dlx.o \
eebmon29k.o \
eelf32_i960.o \
eelf32_i860.o \
eelf32_sparc.o \
eelf32b4300.o \
eelf32cr16c.o \
eelf32bmip.o \
eelf32bmipn32.o \
+ eelf32bmipsnto.o \
eelf32btsmip.o \
eelf32crx.o \
eelf32btsmipn32.o \
eelf32ltsmip.o \
eelf32ltsmipn32.o \
eelf32ebmip.o \
eelf32elmip.o \
eelf32fr30.o \
eelf32frv.o \
eelf32i370.o \
eelf32ip2k.o \
eelf32iq2000.o \
eelf32iq10.o \
eelf32l4300.o \
eelf32lmip.o \
+ eelf32lmipnto.o \
eelf32lppc.o \
eelf32lppcnto.o \
eelf32lppcsim.o \
eelf32mcore.o \
eelf32mipswindiss.o \
eelf32openrisc.o \
eelf32ppc.o \
eelf32ppc_fbsd.o \
eelf32ppclinux.o \
eelf32ppcnto.o \
@@ -647,20 +649,26 @@ eelf32b4300.c: $(srcdir)/emulparams/elf3
$(srcdir)/emulparams/elf32bmip.sh \
$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32b4300 "$(tdir_elf32b4300)"
eelf32cr16c.c: $(srcdir)/emulparams/elf32cr16c.sh \
$(srcdir)/emultempl/elf32.em \
$(srcdir)/scripttempl/elf32cr16c.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32cr16c "$(tdir_elf32cr16c)"
eelf32bmip.c: $(srcdir)/emulparams/elf32bmip.sh \
$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32bmip "$(tdir_elf32bmip)"
+eelf32bmipnto.c: $(srcdir)/emulparams/elf32bmipnto.sh \
+ $(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+ ${GENSCRIPTS} elf32bmipnto "$(tdir_elf32bmipnto)"
+eelf32lmipnto.c: $(srcdir)/emulparams/elf32lmipnto.sh \
+ $(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+ ${GENSCRIPTS} elf32lmipnto "$(tdir_elf32lmipnto)"
eelf32bsmip.c: $(srcdir)/emulparams/elf32bsmip.sh \
$(srcdir)/emulparams/elf32bmip.sh $(srcdir)/emultempl/irix.em \
$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32bsmip "$(tdir_elf32bsmip)"
eelf32btsmip.c: $(srcdir)/emulparams/elf32btsmip.sh \
$(srcdir)/emulparams/elf32bmip.sh \
$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32btsmip "$(tdir_elf32btsmip)"
eelf32crx.c: $(srcdir)/emulparams/elf32crx.sh \
$(srcdir)/emultempl/elf32.em $(srcdir)/emultempl/crxelf.em \
Index: ld/Makefile.in
===================================================================
RCS file: /cvs/src/src/ld/Makefile.in,v
retrieving revision 1.170
diff -w -u -1 -0 -p -r1.170 Makefile.in
--- ld/Makefile.in 3 Sep 2004 17:15:43 -0000 1.170
+++ ld/Makefile.in 13 Sep 2004 18:32:53 -0000
@@ -260,35 +260,37 @@ ALL_EMULATIONS = \
edelta68.o \
eelf32_dlx.o \
eebmon29k.o \
eelf32_i960.o \
eelf32_i860.o \
eelf32_sparc.o \
eelf32b4300.o \
eelf32cr16c.o \
eelf32bmip.o \
eelf32bmipn32.o \
+ eelf32bmipnto.o \
eelf32btsmip.o \
eelf32crx.o \
eelf32btsmipn32.o \
eelf32ltsmip.o \
eelf32ltsmipn32.o \
eelf32ebmip.o \
eelf32elmip.o \
eelf32fr30.o \
eelf32frv.o \
eelf32i370.o \
eelf32ip2k.o \
eelf32iq2000.o \
eelf32iq10.o \
eelf32l4300.o \
eelf32lmip.o \
+ eelf32lmipnto.o \
eelf32lppc.o \
eelf32lppcnto.o \
eelf32lppcsim.o \
eelf32mcore.o \
eelf32mipswindiss.o \
eelf32openrisc.o \
eelf32ppc.o \
eelf32ppc_fbsd.o \
eelf32ppclinux.o \
eelf32ppcnto.o \
@@ -1373,20 +1375,26 @@ eelf32b4300.c: $(srcdir)/emulparams/elf3
$(srcdir)/emulparams/elf32bmip.sh \
$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32b4300 "$(tdir_elf32b4300)"
eelf32cr16c.c: $(srcdir)/emulparams/elf32cr16c.sh \
$(srcdir)/emultempl/elf32.em \
$(srcdir)/scripttempl/elf32cr16c.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32cr16c "$(tdir_elf32cr16c)"
eelf32bmip.c: $(srcdir)/emulparams/elf32bmip.sh \
$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32bmip "$(tdir_elf32bmip)"
+eelf32bmipnto.c: $(srcdir)/emulparams/elf32bmipnto.sh \
+ $(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+ ${GENSCRIPTS} elf32bmipnto "$(tdir_elf32bmipnto)"
+eelf32lmipnto.c: $(srcdir)/emulparams/elf32lmipnto.sh \
+ $(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+ ${GENSCRIPTS} elf32lmipnto "$(tdir_elf32lmipnto)"
eelf32bsmip.c: $(srcdir)/emulparams/elf32bsmip.sh \
$(srcdir)/emulparams/elf32bmip.sh $(srcdir)/emultempl/irix.em \
$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32bsmip "$(tdir_elf32bsmip)"
eelf32btsmip.c: $(srcdir)/emulparams/elf32btsmip.sh \
$(srcdir)/emulparams/elf32bmip.sh \
$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32btsmip "$(tdir_elf32btsmip)"
eelf32crx.c: $(srcdir)/emulparams/elf32crx.sh \
$(srcdir)/emultempl/elf32.em $(srcdir)/emultempl/crxelf.em \
Index: ld/configure.tgt
===================================================================
RCS file: /cvs/src/src/ld/configure.tgt,v
retrieving revision 1.155
diff -w -u -1 -0 -p -r1.155 configure.tgt
--- ld/configure.tgt 3 Sep 2004 17:15:44 -0000 1.155
+++ ld/configure.tgt 13 Sep 2004 18:33:03 -0000
@@ -422,20 +422,26 @@ mips*-*-netbsd*) targ_emul=elf32bmip
;;
mips*-*-bsd*) targ_emul=mipsbig ;;
mips*vr4300el-*-elf*) targ_emul=elf32l4300 ;;
mips*vr4300-*-elf*) targ_emul=elf32b4300 ;;
mips*vr4100el-*-elf*) targ_emul=elf32l4300 ;;
mips*vr4100-*-elf*) targ_emul=elf32b4300 ;;
mips*vr5000el-*-elf*) targ_emul=elf32l4300 ;;
mips*vr5000-*-elf*) targ_emul=elf32b4300 ;;
mips*el-*-elf*) targ_emul=elf32elmip ;;
mips*-*-elf*) targ_emul=elf32ebmip ;;
+mips*-*-nto*) targ_emul=elf32lmipnto
+ targ_extra_emuls="elf32bmipnto"
+ ;;
+mips*eb*-*-nto*) targ_emul=elf32bmipnto
+ targ_extra_emuls="elf32lmipnto"
+ ;;
mips*el-*-rtems*) targ_emul=elf32elmip ;;
mips*-*-rtems*) targ_emul=elf32ebmip ;;
mips*el-*-vxworks*) targ_emul=elf32elmip ;;
mips*-*-vxworks*) targ_emul=elf32ebmip
targ_extra_emuls="elf32elmip" ;;
mips*-*-windiss) targ_emul=elf32mipswindiss ;;
mips64*el-*-linux-gnu*) targ_emul=elf32ltsmipn32
targ_extra_emuls="elf32btsmipn32 elf32ltsmip elf32btsmip elf64ltsmip elf64btsmip"
;;
mips64*-*-linux-gnu*) targ_emul=elf32btsmipn32
2004-09-13 Jeff Baker <jbaker@qnx.com>
* elflink.c (_bfd_elf_add_dynamic_entry): Add code to
warn if adding a DT_TEXTREL to a shared object and
--warn-shared-textrel was specified.
2004-09-13 Jeff Baker <jbaker@qnx.com>
* bfdlink.h (bfd_link_info): Add boolean
warn_shared_textrel.
2004-09-13 Jeff Baker <jbaker@qnx.com>
* lexsup.c: Handle --warn-shared-textrel option.
Index: bfd/elflink.c
===================================================================
RCS file: /cvs/src/src/bfd/elflink.c,v
retrieving revision 1.101
diff -w -u -1 -0 -p -r1.101 elflink.c
--- bfd/elflink.c 7 Sep 2004 13:40:37 -0000 1.101
+++ bfd/elflink.c 13 Sep 2004 18:24:51 -0000
@@ -2644,20 +2644,25 @@ _bfd_elf_add_dynamic_entry (struct bfd_l
const struct elf_backend_data *bed;
asection *s;
bfd_size_type newsize;
bfd_byte *newcontents;
Elf_Internal_Dyn dyn;
hash_table = elf_hash_table (info);
if (! is_elf_hash_table (hash_table))
return FALSE;
+ if (info->warn_shared_textrel && info->shared && tag == DT_TEXTREL) {
+ (*_bfd_error_handler)
+ (_("warning: creating a DT_TEXTREL in a shared object."));
+ }
+
bed = get_elf_backend_data (hash_table->dynobj);
s = bfd_get_section_by_name (hash_table->dynobj, ".dynamic");
BFD_ASSERT (s != NULL);
newsize = s->size + bed->s->sizeof_dyn;
newcontents = bfd_realloc (s->contents, newsize);
if (newcontents == NULL)
return FALSE;
dyn.d_tag = tag;
Index: include/bfdlink.h
===================================================================
RCS file: /cvs/src/src/include/bfdlink.h,v
retrieving revision 1.45
diff -w -u -1 -0 -p -r1.45 bfdlink.h
--- include/bfdlink.h 13 Aug 2004 03:16:01 -0000 1.45
+++ include/bfdlink.h 13 Sep 2004 18:25:04 -0000
@@ -390,20 +390,23 @@ struct bfd_link_info
unsigned int spare_dynamic_tags;
/* May be used to set DT_FLAGS for ELF. */
bfd_vma flags;
/* May be used to set DT_FLAGS_1 for ELF. */
bfd_vma flags_1;
/* Start and end of RELRO region. */
bfd_vma relro_start, relro_end;
+
+ /* Warn if adding a DT_TEXTREL to a shared object. */
+ bfd_boolean warn_shared_textrel;
};
/* This structures holds a set of callback functions. These are
called by the BFD linker routines. The first argument to each
callback function is the bfd_link_info structure being used. Each
function returns a boolean value. If the function returns FALSE,
then the BFD function which called it will return with a failure
indication. */
struct bfd_link_callbacks
Index: ld/lexsup.c
===================================================================
RCS file: /cvs/src/src/ld/lexsup.c,v
retrieving revision 1.76
diff -w -u -1 -0 -p -r1.76 lexsup.c
--- ld/lexsup.c 19 Jul 2004 16:40:52 -0000 1.76
+++ ld/lexsup.c 13 Sep 2004 18:25:13 -0000
@@ -139,21 +139,22 @@ enum option_values
OPTION_NOSTDLIB,
OPTION_NO_OMAGIC,
OPTION_STRIP_DISCARDED,
OPTION_NO_STRIP_DISCARDED,
OPTION_ACCEPT_UNKNOWN_INPUT_ARCH,
OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH,
OPTION_PIE,
OPTION_UNRESOLVED_SYMBOLS,
OPTION_WARN_UNRESOLVED_SYMBOLS,
OPTION_ERROR_UNRESOLVED_SYMBOLS,
- OPTION_REDUCE_MEMORY_OVERHEADS
+ OPTION_REDUCE_MEMORY_OVERHEADS,
+ OPTION_WARN_SHARED_TEXTREL
};
/* The long options. This structure is used for both the option
parsing and the help text. */
struct ld_option
{
/* The long option information. */
struct option opt;
/* The short option with the same meaning ('\0' if none). */
@@ -489,20 +490,23 @@ static const struct ld_option ld_options
"\t\t\t\tfollowing dynamic libs"), TWO_DASHES },
{ {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED},
'\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n"
"\t\t\t\tin following dynamic libs"), TWO_DASHES },
{ {"as-needed", no_argument, NULL, OPTION_AS_NEEDED},
'\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
TWO_DASHES },
{ {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED},
'\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"),
TWO_DASHES },
+ { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
+ '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
+ TWO_DASHES },
{ {"wrap", required_argument, NULL, OPTION_WRAP},
'\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
};
#define OPTION_COUNT ARRAY_SIZE (ld_options)
void
parse_args (unsigned argc, char **argv)
{
unsigned i;
@@ -1209,20 +1213,23 @@ parse_args (unsigned argc, char **argv)
break;
case OPTION_NO_ADD_NEEDED:
add_needed = FALSE;
break;
case OPTION_AS_NEEDED:
as_needed = TRUE;
break;
case OPTION_NO_AS_NEEDED:
as_needed = FALSE;
break;
+ case OPTION_WARN_SHARED_TEXTREL:
+ link_info.warn_shared_textrel = TRUE;
+ break;
case OPTION_WRAP:
add_wrap (optarg);
break;
case OPTION_DISCARD_NONE:
link_info.discard = discard_none;
break;
case 'X':
link_info.discard = discard_l;
break;
case 'x':