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Initial redirect stuff for ppc64-linux.

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git-svn-id: svn://svn.valgrind.org/valgrind/trunk@5499
This commit is contained in:
Julian Seward 2006-01-05 14:07:04 +00:00
parent c70190e6da
commit 9c0ae4be6f
4 changed files with 53 additions and 4 deletions
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8
coregrind/m_main.c
View File

@ -2398,8 +2398,12 @@ Int main(Int argc, HChar **argv, HChar **envp)
// p: aspacem
//--------------------------------------------------------------
{ Bool change_ownership_v_c_OK;
Addr co_start = VG_PGROUNDDN( (Addr)&VG_(trampoline_stuff_start) );
Addr co_endPlus = VG_PGROUNDUP( (Addr)&VG_(trampoline_stuff_end) );
Addr co_start = VG_PGROUNDDN(
(Addr)VG_(fnptr_to_fnentry)(
&VG_(trampoline_stuff_start) ) );
Addr co_endPlus = VG_PGROUNDUP(
(Addr)VG_(fnptr_to_fnentry)(
&VG_(trampoline_stuff_end) ) );
VG_(debugLog)(1,"redir",
"transfer ownership V -> C of 0x%llx .. 0x%llx\n",
(ULong)co_start, (ULong)co_endPlus-1 );

12
coregrind/m_redir.c
View File

@ -43,6 +43,7 @@
#include "pub_core_trampoline.h"
#include "pub_core_transtab.h"
#include "pub_core_tooliface.h" // VG_(needs).malloc_replacement
#include "pub_tool_machine.h" // VG_(fnptr_to_fnentry)
/*------------------------------------------------------------*/
@ -406,7 +407,16 @@ void VG_(setup_code_redirect_table) ( void )
#elif defined(VGP_ppc64_linux)
// we'll have to stick some godawful hacks in here, no doubt
/* If we're using memcheck, use these intercepts right from
the start, otherwise ld.so makes a lot of noise. */
if (0==VG_(strcmp)("Memcheck", VG_(details).name)) {
add_redirect_sym_to_addr(
"soname:ld64.so.1", "strlen",
(Addr)VG_(fnptr_to_fnentry)( &VG_(ppc64_linux_REDIR_FOR_strlen) )
);
}
#else
# error Unknown platform

33
coregrind/m_trampoline.S
View File

@ -277,6 +277,9 @@ VG_(ppc32_linux_REDIR_FOR_strchr):
.global VG_(trampoline_stuff_end)
VG_(trampoline_stuff_end):
/* and a trailing page of unexecutable code */
UD2_PAGE
# undef UD2_16
# undef UD2_64
# undef UD2_256
@ -306,7 +309,32 @@ VG_(trampoline_stuff_start):
.type .VG_(trampoline_stuff_start),@function
.global .VG_(trampoline_stuff_start)
.VG_(trampoline_stuff_start):
.align 2
.globl VG_(ppc64_linux_REDIR_FOR_strlen)
.section ".opd","aw"
.align 3
VG_(ppc64_linux_REDIR_FOR_strlen):
.quad .L.VG_(ppc64_linux_REDIR_FOR_strlen),.TOC.@tocbase
.previous
.type VG_(ppc64_linux_REDIR_FOR_strlen), @function
.L.VG_(ppc64_linux_REDIR_FOR_strlen):
mr 9,3
lbz 0,0(3)
li 3,0
cmpwi 7,0,0
beqlr 7
li 3,0
.L5:
addi 0,3,1
extsw 3,0
lbzx 0,9,3
cmpwi 7,0,0
bne 7,.L5
blr
.long 0
.byte 0,0,0,0,0,0,0,0
.size VG_(ppc64_linux_REDIR_FOR_strlen),.-.L.VG_(ppc64_linux_REDIR_FOR_strlen)
.align 2
.global VG_(trampoline_stuff_end)
@ -319,6 +347,9 @@ VG_(trampoline_stuff_end):
.global .VG_(trampoline_stuff_end)
.VG_(trampoline_stuff_end):
/* and a trailing page of unexecutable code */
UD2_PAGE
# undef UD2_16
# undef UD2_64
# undef UD2_256

4
coregrind/pub_core_trampoline.h
View File

@ -65,6 +65,10 @@ extern UInt VG_(ppc32_linux_REDIR_FOR_strlen)( void* );
extern UInt VG_(ppc32_linux_REDIR_FOR_strcmp)( void*, void* );
extern void* VG_(ppc32_linux_REDIR_FOR_strchr)( void*, Int );
#endif
#if defined(VGP_ppc64_linux)
extern UInt VG_(ppc64_linux_REDIR_FOR_strlen)( void* );
#endif
#endif // __PUB_CORE_TRAMPOLINE_H