commit c281233b10ef8351c66636f99be7a131a23f3420
author sewardj <sewardj@a5019735-40e9-0310-863c-91ae7b9d1cf9> Fri Dec 23 23:34:51 2005 +0000
committer sewardj <sewardj@a5019735-40e9-0310-863c-91ae7b9d1cf9> Fri Dec 23 23:34:51 2005 +0000
tree 7ff8c2ee4417f620d9dfd2ac6f7d7c2043c49c5f
parent db2ac81bd9aa4d57027cf0e416852664e18ec683

ppc64 ELF allows the 288 bytes below the stack pointer to be accessed.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@5425 a5019735-40e9-0310-863c-91ae7b9d1cf9

include/pub_tool_machine.h

diff --git a/include/pub_tool_machine.h b/include/pub_tool_machine.h
index 948df5a..f4cd312 100644
--- a/include/pub_tool_machine.h
+++ b/include/pub_tool_machine.h
@@ -36,7 +36,7 @@
 #  define VG_MAX_INSTR_SZB         16  // max length of native instruction
 #  define VG_CLREQ_SZB             18  // length of a client request, may
                                        //   be larger than VG_MAX_INSTR_SZB
-#  define VG_STACK_REDZONE_SZB      0  // number of addressable bytes below SP
+#  define VG_STACK_REDZONE_SZB      0  // number of addressable bytes below %RSP
 #elif defined(VGA_amd64)
 #  define VG_MIN_INSTR_SZB          1
 #  define VG_MAX_INSTR_SZB         16
@@ -51,7 +51,8 @@
 #  define VG_MIN_INSTR_SZB          4
 #  define VG_MAX_INSTR_SZB          4 
 #  define VG_CLREQ_SZB             24
-#  define VG_STACK_REDZONE_SZB      0
+#  define VG_STACK_REDZONE_SZB    288  // number of addressable bytes below R1
+                                       // from 64-bit PowerPC ELF ABI Supplement 1.7
 #else
 #  error Unknown arch
 #endif