cvs commit: src/sys/alpha/include profile.h src/sys/amd64/include profile.h src/sys/arm/include profile.h src/sys/i386/include profile.h src/sys/ia64/include profile.h src/sys/powerpc/include profile.h src/sys/sparc64/include profile.h src/sys/libkern ...

[Marcel Moolenaar]

marcel      2004-08-27 19:42:35 UTC

  FreeBSD src repository

  Modified files:
    sys/alpha/include    profile.h 
    sys/amd64/include    profile.h 
    sys/arm/include      profile.h 
    sys/i386/include     profile.h 
    sys/ia64/include     profile.h 
    sys/powerpc/include  profile.h 
    sys/sparc64/include  profile.h 
    sys/libkern          mcount.c 
  Log:
  Move the kernel-specific logic to adjust frompc from MI to MD. For
  these two reasons:
  1. On ia64 a function pointer does not hold the address of the first
     instruction of a functions implementation. It holds the address
     of a function descriptor. Hence the user(), btrap(), eintr() and
     bintr() prototypes are wrong for getting the actual code address.
  2. The logic forces interrupt, trap and exception entry points to
     be layed-out contiguously. This can not be achieved on ia64 and is
     generally just bad programming.
  
  The MCOUNT_FROMPC_USER macro is used to set the frompc argument to
  some kernel address which represents any frompc that falls outside
  the kernel text range. The macro can expand to ~0U to bail out in
  that case.
  The MCOUNT_FROMPC_INTR macro is used to set the frompc argument to
  some kernel address to represent a call to a trap or interrupt
  handler. This to avoid that the trap or interrupt handler appear to
  be called from everywhere in the call graph. The macro can expand
  to ~0U to prevent adjusting frompc. Note that the argument is selfpc,
  not frompc.
  
  This commit defines the macros on all architectures equivalently to
  the original code in sys/libkern/mcount.c. People can take it from
  here...
  
  Compile-tested on: alpha, amd64, i386, ia64 and sparc64
  Boot-tested on: i386
  
  Revision  Changes    Path
  1.7       +21 -5     src/sys/alpha/include/profile.h
  1.42      +13 -0     src/sys/amd64/include/profile.h
  1.4       +13 -0     src/sys/arm/include/profile.h
  1.38      +13 -0     src/sys/i386/include/profile.h
  1.11      +15 -0     src/sys/ia64/include/profile.h
  1.23      +21 -33    src/sys/libkern/mcount.c
  1.3       +14 -0     src/sys/powerpc/include/profile.h
  1.7       +13 -0     src/sys/sparc64/include/profile.h