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| author | Mark Wielaard <mjw@redhat.com> | 2009-08-06 10:41:46 +0200 |
|---|---|---|
| committer | Mark Wielaard <mjw@redhat.com> | 2009-08-06 10:41:46 +0200 |
| commit | 3d9889977397098d14c5be50f1dfef1c3eeb508f (patch) | |
| tree | 7b9b3d345b5d126113ab3220ae93e5373b422d75 /runtime | |
| parent | 68d47ee749911aa9babdfe37efd85db115e316be (diff) | |
| download | systemtap-steved-3d9889977397098d14c5be50f1dfef1c3eeb508f.tar.gz systemtap-steved-3d9889977397098d14c5be50f1dfef1c3eeb508f.tar.xz systemtap-steved-3d9889977397098d14c5be50f1dfef1c3eeb508f.zip | |
PR10491 Don't assign to REG_IP if it isn't an lvalue (s390 and ia64).
To fixup REG_IP to show the correct value after a [ku]probe trap we
assigned the address of the actual instruction pointer of the probed
instruction. That doesn't work on architectures, s390 and ia64, where
REG_IP is not a simple lvalue. Just don't try to fixup the address in
those cases. If this isn't enough, the uprobe_stmt_num.exp testcase
will point this out.
* runtime/regs.h: Define REG_IP_LVALUE for x86_64, i386, powerpc64 and arm.
* tapsets.cxx (dwarf_derived_probe_group::emit_module_decls): Only fixup
REG_IP when REG_IP_LVALUE is defined.
(uprobe_derived_probe_group::emit_module_decls): Likewise.
(kprobe_derived_probe_group::emit_module_decls): Likewise.
Diffstat (limited to 'runtime')
| -rw-r--r-- | runtime/regs.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/runtime/regs.h b/runtime/regs.h index 123d7601..d80cdf0a 100644 --- a/runtime/regs.h +++ b/runtime/regs.h @@ -13,17 +13,20 @@ #if defined (STAPCONF_X86_UNIREGS) && (defined (__x86_64__) || defined (__i386__)) #define REG_IP(regs) regs->ip +#define REG_IP_LVALUE 1 #define REG_SP(regs) regs->sp #define REG_FP(regs) regs->bp #elif defined (__x86_64__) #define REG_IP(regs) regs->rip +#define REG_IP_LVALUE 1 #define REG_SP(regs) regs->rsp #elif defined (__i386__) #define REG_IP(regs) regs->eip +#define REG_IP_LVALUE 1 #define REG_SP(regs) regs->esp #define REG_FP(regs) regs->ebp @@ -34,12 +37,14 @@ #elif defined (__powerpc64__) #define REG_IP(regs) regs->nip +#define REG_IP_LVALUE 1 #define REG_SP(regs) regs->gpr[1] #define REG_LINK(regs) regs->link #elif defined (__arm__) #define REG_IP(regs) regs->ARM_pc +#define REG_IP_LVALUE 1 #define REG_SP(regs) regs->ARM_sp #define REG_LINK(regs) regs->ARM_lr |