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Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

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* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (71 commits)
  MIPS: Lasat: Fix botched changes to sysctl code.
  RTC: rtc-cmos.c: Fix warning on MIPS
  MIPS: Cleanup random differences beween lmo and Linus' kernel.
  MIPS: No longer hardwire CONFIG_EMBEDDED to y
  MIPS: Fix and enhance built-in kernel command line
  MIPS: eXcite: Remove platform.
  MIPS: Loongson: Cleanups of serial port support
  MIPS: Lemote 2F: Suspend CS5536 MFGPT Timer
  MIPS: Excite: move iodev_remove to .devexit.text
  MIPS: Lasat: Convert to proc_fops / seq_file
  MIPS: Cleanup signal code initialization
  MIPS: Modularize COP2 handling
  MIPS: Move EARLY_PRINTK to Kconfig.debug
  MIPS: Yeeloong 2F: Cleanup reset logic using the new ec_write function
  MIPS: Yeeloong 2F: Add LID open event as the wakeup event
  MIPS: Yeeloong 2F: Add basic EC operations
  MIPS: Move several variables from .bss to .init.data
  MIPS: Tracing: Make function graph tracer work with -mmcount-ra-address
  MIPS: Tracing: Reserve $12(t0) for mcount-ra-address of gcc 4.5
  MIPS: Tracing: Make ftrace for MIPS work without -fno-omit-frame-pointer
  ...
This commit is contained in:
Linus Torvalds 2009-12-17 16:38:06 -08:00
commit dbfc985195
255 changed files with 18312 additions and 4880 deletions
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1
scripts/Makefile.build
View file

@ -207,6 +207,7 @@ endif
ifdef CONFIG_FTRACE_MCOUNT_RECORD
cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \
"$(if $(CONFIG_CPU_BIG_ENDIAN),big,little)" \
"$(if $(CONFIG_64BIT),64,32)" \
"$(OBJDUMP)" "$(OBJCOPY)" "$(CC)" "$(LD)" "$(NM)" "$(RM)" "$(MV)" \
"$(if $(part-of-module),1,0)" "$(@)";

58
scripts/recordmcount.pl
View file

@ -113,13 +113,13 @@ $P =~ s@.*/@@g;
my $V = '0.1';
if ($#ARGV != 10) {
print "usage: $P arch bits objdump objcopy cc ld nm rm mv is_module inputfile\n";
if ($#ARGV != 11) {
print "usage: $P arch endian bits objdump objcopy cc ld nm rm mv is_module inputfile\n";
print "version: $V\n";
exit(1);
}
my ($arch, $bits, $objdump, $objcopy, $cc,
my ($arch, $endian, $bits, $objdump, $objcopy, $cc,
$ld, $nm, $rm, $mv, $is_module, $inputfile) = @ARGV;
# This file refers to mcount and shouldn't be ftraced, so lets' ignore it
@ -295,6 +295,58 @@ if ($arch eq "x86_64") {
$ld .= " -m elf64_sparc";
$cc .= " -m64";
$objcopy .= " -O elf64-sparc";
} elsif ($arch eq "mips") {
# To enable module support, we need to enable the -mlong-calls option
# of gcc for module, after using this option, we can not get the real
# offset of the calling to _mcount, but the offset of the lui
# instruction or the addiu one. herein, we record the address of the
# first one, and then we can replace this instruction by a branch
# instruction to jump over the profiling function to filter the
# indicated functions, or swith back to the lui instruction to trace
# them, which means dynamic tracing.
#
# c: 3c030000 lui v1,0x0
# c: R_MIPS_HI16 _mcount
# c: R_MIPS_NONE *ABS*
# c: R_MIPS_NONE *ABS*
# 10: 64630000 daddiu v1,v1,0
# 10: R_MIPS_LO16 _mcount
# 10: R_MIPS_NONE *ABS*
# 10: R_MIPS_NONE *ABS*
# 14: 03e0082d move at,ra
# 18: 0060f809 jalr v1
#
# for the kernel:
#
# 10: 03e0082d move at,ra
# 14: 0c000000 jal 0 <loongson_halt>
# 14: R_MIPS_26 _mcount
# 14: R_MIPS_NONE *ABS*
# 14: R_MIPS_NONE *ABS*
# 18: 00020021 nop
if ($is_module eq "0") {
$mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s_mcount\$";
} else {
$mcount_regex = "^\\s*([0-9a-fA-F]+): R_MIPS_HI16\\s+_mcount\$";
}
$objdump .= " -Melf-trad".$endian."mips ";
if ($endian eq "big") {
$endian = " -EB ";
$ld .= " -melf".$bits."btsmip";
} else {
$endian = " -EL ";
$ld .= " -melf".$bits."ltsmip";
}
$cc .= " -mno-abicalls -fno-pic -mabi=" . $bits . $endian;
$ld .= $endian;
if ($bits == 64) {
$function_regex =
"^([0-9a-fA-F]+)\\s+<(.|[^\$]L.*?|\$[^L].*?|[^\$][^L].*?)>:";
$type = ".dword";
}
} elsif ($arch eq "microblaze") {
# Microblaze calls '_mcount' instead of plain 'mcount'.
$mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s_mcount\$";