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* ppc-linux-tdep.c: More "Linux" -> "GNU/Linux".

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This commit is contained in:
Jim Blandy 2003-06-24 23:09:22 +00:00
parent 02631ec09e
commit e538d2d7ba
2 changed files with 19 additions and 17 deletions
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2
gdb/ChangeLog
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@ -1,5 +1,7 @@
2003-06-24 Jim Blandy <jimb@redhat.com>
* ppc-linux-tdep.c: More "Linux" -> "GNU/Linux".
* ppc-linux-tdep.c (ppc64_linux_convert_from_func_ptr_addr): New
function.
(ppc_linux_init_abi): Register it as the

34
gdb/ppc-linux-tdep.c
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@ -731,7 +731,7 @@ insn_ds_field (unsigned int insn)
}
/* If DESC is the address of a 64-bit PowerPC Linux function
/* If DESC is the address of a 64-bit PowerPC GNU/Linux function
descriptor, return the descriptor's entry point. */
static CORE_ADDR
ppc64_desc_entry_point (CORE_ADDR desc)
@ -894,22 +894,22 @@ ppc64_skip_trampoline_code (CORE_ADDR pc)
}
/* Support for CONVERT_FROM_FUNC_PTR_ADDR(ADDR) on PPC64 Linux.
/* Support for CONVERT_FROM_FUNC_PTR_ADDR(ADDR) on PPC64 GNU/Linux.
Usually a function pointer's representation is simply the address
of the function. On Linux on the 64-bit PowerPC however, a function
pointer is represented by a pointer to a TOC entry. This TOC entry
contains three words, the first word is the address of the
function, the second word is the TOC pointer (r2), and the third
word is the static chain value. Throughout GDB it is currently
assumed that a function pointer contains the address of the
function, which is not easy to fix. In addition, the conversion of
a function address to a function pointer would require allocation
of a TOC entry in the inferior's memory space, with all its
drawbacks. To be able to call C++ virtual methods in the inferior
(which are called via function pointers), find_function_addr uses
this function to get the function address from a function
pointer. */
of the function. On GNU/Linux on the 64-bit PowerPC however, a
function pointer is represented by a pointer to a TOC entry. This
TOC entry contains three words, the first word is the address of
the function, the second word is the TOC pointer (r2), and the
third word is the static chain value. Throughout GDB it is
currently assumed that a function pointer contains the address of
the function, which is not easy to fix. In addition, the
conversion of a function address to a function pointer would
require allocation of a TOC entry in the inferior's memory space,
with all its drawbacks. To be able to call C++ virtual methods in
the inferior (which are called via function pointers),
find_function_addr uses this function to get the function address
from a function pointer. */
/* Return real function address if ADDR (a function pointer) is in the data
space and is therefore a special function pointer. */
@ -929,7 +929,7 @@ ppc64_linux_convert_from_func_ptr_addr (CORE_ADDR addr)
}
/* On 64-bit PowerPC Linux, the ELF header's e_entry field is the
/* On 64-bit PowerPC GNU/Linux, the ELF header's e_entry field is the
address of a function descriptor for the entry point function, not
the actual entry point itself. So to find the actual address at
which execution should begin, we need to fetch the function's entry
@ -1062,7 +1062,7 @@ ppc_linux_init_abi (struct gdbarch_info info,
if (tdep->wordsize == 8)
{
/* Handle PPC64 Linux function pointers (which are really
/* Handle PPC64 GNU/Linux function pointers (which are really
function descriptors). */
set_gdbarch_convert_from_func_ptr_addr
(gdbarch, ppc64_linux_convert_from_func_ptr_addr);