[rfa:ppc64gnulinux] Call ".malloc"

[rfa:ppc64gnulinux] Call ".malloc"

[Andrew Cagney]

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Hello,

When only minimal symbol information is available, the symbol "malloc", 
which is found in a data section because it's a descriptor, gets turns 
into a 32-bit int variable.  Consequently, an attempt to call "malloc" 
is turned into to jump to the code designated by that 32-bit integer 
value found at malloc.

This patch avoids that problem entirely by specifying that on PPC64 
GNU/Linux, the "malloc" function has the name ".malloc" (which is really 
the function's start address).

ok?
Andrew

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2003-11-13  Andrew Cagney  <cagney@redhat.com>

	* ppc-linux-tdep.c (ppc_linux_init_abi): Set PPC64's
	"name_of_malloc" to ".malloc".

Index: ppc-linux-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/ppc-linux-tdep.c,v
retrieving revision 1.48
diff -u -r1.48 ppc-linux-tdep.c
--- ppc-linux-tdep.c	13 Nov 2003 18:08:57 -0000	1.48
+++ ppc-linux-tdep.c	14 Nov 2003 00:40:57 -0000
@@ -1083,6 +1083,9 @@
       set_gdbarch_in_solib_call_trampoline
         (gdbarch, ppc64_in_solib_call_trampoline);
       set_gdbarch_skip_trampoline_code (gdbarch, ppc64_skip_trampoline_code);
+
+      /* PPC64 malloc's entry-point is called ".malloc".  */
+      set_gdbarch_name_of_malloc (gdbarch, ".malloc");
     }
 }
 

Re: [rfa:ppc64gnulinux] Call ".malloc"

[Kevin Buettner]

On Nov 13,  7:56pm, Andrew Cagney wrote:

> When only minimal symbol information is available, the symbol "malloc", 
> which is found in a data section because it's a descriptor, gets turns 
> into a 32-bit int variable.  Consequently, an attempt to call "malloc" 
> is turned into to jump to the code designated by that 32-bit integer 
> value found at malloc.
> 
> This patch avoids that problem entirely by specifying that on PPC64 
> GNU/Linux, the "malloc" function has the name ".malloc" (which is really 
> the function's start address).
> 
> ok?

Sounds good to me.

Kevin

Re: [rfa:ppc64gnulinux] Call ".malloc"

[Andrew Cagney]

> ok?
> 
> 
> Sounds good to me.

committed,
Andrew