search for: got_call_preinsn

Displaying 11 results from an estimated 11 matches for "got_call_preinsn".

2018 May 24
2
[PATCH v3 21/27] x86/ftrace: Adapt function tracing for PIE support
...6f263e..73b3c30cb7a3 100644 > --- a/arch/x86/kernel/ftrace.c > +++ b/arch/x86/kernel/ftrace.c > @@ -135,6 +135,44 @@ ftrace_modify_code_direct(unsigned long ip, unsigned const char *old_code, > return 0; > } > > +/* Bytes before call GOT offset */ > +const unsigned char got_call_preinsn[] = { 0xff, 0x15 }; > + > +static int > +ftrace_modify_initial_code(unsigned long ip, unsigned const char *old_code, > + unsigned const char *new_code) > +{ > + unsigned char replaced[MCOUNT_INSN_SIZE + 1]; > + > + ftrace_expected = old_code; > + > + /* > + *...
2018 May 24
2
[PATCH v3 21/27] x86/ftrace: Adapt function tracing for PIE support
...6f263e..73b3c30cb7a3 100644 > --- a/arch/x86/kernel/ftrace.c > +++ b/arch/x86/kernel/ftrace.c > @@ -135,6 +135,44 @@ ftrace_modify_code_direct(unsigned long ip, unsigned const char *old_code, > return 0; > } > > +/* Bytes before call GOT offset */ > +const unsigned char got_call_preinsn[] = { 0xff, 0x15 }; > + > +static int > +ftrace_modify_initial_code(unsigned long ip, unsigned const char *old_code, > + unsigned const char *new_code) > +{ > + unsigned char replaced[MCOUNT_INSN_SIZE + 1]; > + > + ftrace_expected = old_code; > + > + /* > + *...
2018 May 24
1
[PATCH v3 21/27] x86/ftrace: Adapt function tracing for PIE support
...gt; > +++ b/arch/x86/kernel/ftrace.c > > > @@ -135,6 +135,44 @@ ftrace_modify_code_direct(unsigned long ip, unsigned const char *old_code, > > > return 0; > > > } > > > > > > +/* Bytes before call GOT offset */ > > > +const unsigned char got_call_preinsn[] = { 0xff, 0x15 }; > > > + > > > +static int > > > +ftrace_modify_initial_code(unsigned long ip, unsigned const char *old_code, > > > + unsigned const char *new_code) > > > +{ > > > + unsigned char replaced[MCOUNT_INSN_SI...
2018 May 24
0
[PATCH v3 21/27] x86/ftrace: Adapt function tracing for PIE support
...- a/arch/x86/kernel/ftrace.c > > +++ b/arch/x86/kernel/ftrace.c > > @@ -135,6 +135,44 @@ ftrace_modify_code_direct(unsigned long ip, unsigned const char *old_code, > > return 0; > > } > > > > +/* Bytes before call GOT offset */ > > +const unsigned char got_call_preinsn[] = { 0xff, 0x15 }; > > + > > +static int > > +ftrace_modify_initial_code(unsigned long ip, unsigned const char *old_code, > > + unsigned const char *new_code) > > +{ > > + unsigned char replaced[MCOUNT_INSN_SIZE + 1]; > > + > > + ftrace_expected...
2018 May 23
0
[PATCH v3 21/27] x86/ftrace: Adapt function tracing for PIE support
..._code, - unsigned const char *new_code) + unsigned const char *new_code) { unsigned char replaced[MCOUNT_INSN_SIZE]; @@ -135,6 +135,44 @@ ftrace_modify_code_direct(unsigned long ip, unsigned const char *old_code, return 0; } +/* Bytes before call GOT offset */ +const unsigned char got_call_preinsn[] = { 0xff, 0x15 }; + +static int +ftrace_modify_initial_code(unsigned long ip, unsigned const char *old_code, + unsigned const char *new_code) +{ + unsigned char replaced[MCOUNT_INSN_SIZE + 1]; + + ftrace_expected = old_code; + + /* + * If PIE is not enabled or no GOT call was found, default...
2018 Mar 13
0
[PATCH v2 21/27] x86/ftrace: Adapt function tracing for PIE support
..._code, - unsigned const char *new_code) + unsigned const char *new_code) { unsigned char replaced[MCOUNT_INSN_SIZE]; @@ -135,6 +135,44 @@ ftrace_modify_code_direct(unsigned long ip, unsigned const char *old_code, return 0; } +/* Bytes before call GOT offset */ +const unsigned char got_call_preinsn[] = { 0xff, 0x15 }; + +static int +ftrace_modify_initial_code(unsigned long ip, unsigned const char *old_code, + unsigned const char *new_code) +{ + unsigned char replaced[MCOUNT_INSN_SIZE + 1]; + + ftrace_expected = old_code; + + /* + * If PIE is not enabled or no GOT call was found, default...
2018 May 23
33
[PATCH v3 00/27] x86: PIE support and option to extend KASLR randomization
Changes: - patch v3: - Update on message to describe longer term PIE goal. - Minor change on ftrace if condition. - Changed code using xchgq. - patch v2: - Adapt patch to work post KPTI and compiler changes - Redo all performance testing with latest configs and compilers - Simplify mov macro on PIE (MOVABS now) - Reduce GOT footprint - patch v1: - Simplify ftrace
2018 Mar 13
32
[PATCH v2 00/27] x86: PIE support and option to extend KASLR randomization
Changes: - patch v2: - Adapt patch to work post KPTI and compiler changes - Redo all performance testing with latest configs and compilers - Simplify mov macro on PIE (MOVABS now) - Reduce GOT footprint - patch v1: - Simplify ftrace implementation. - Use gcc mstack-protector-guard-reg=%gs with PIE when possible. - rfc v3: - Use --emit-relocs instead of -pie to reduce
2018 Mar 13
32
[PATCH v2 00/27] x86: PIE support and option to extend KASLR randomization
Changes: - patch v2: - Adapt patch to work post KPTI and compiler changes - Redo all performance testing with latest configs and compilers - Simplify mov macro on PIE (MOVABS now) - Reduce GOT footprint - patch v1: - Simplify ftrace implementation. - Use gcc mstack-protector-guard-reg=%gs with PIE when possible. - rfc v3: - Use --emit-relocs instead of -pie to reduce
2017 Oct 11
32
[PATCH v1 00/27] x86: PIE support and option to extend KASLR randomization
Changes: - patch v1: - Simplify ftrace implementation. - Use gcc mstack-protector-guard-reg=%gs with PIE when possible. - rfc v3: - Use --emit-relocs instead of -pie to reduce dynamic relocation space on mapped memory. It also simplifies the relocation process. - Move the start the module section next to the kernel. Remove the need for -mcmodel=large on modules. Extends
2017 Oct 11
32
[PATCH v1 00/27] x86: PIE support and option to extend KASLR randomization
Changes: - patch v1: - Simplify ftrace implementation. - Use gcc mstack-protector-guard-reg=%gs with PIE when possible. - rfc v3: - Use --emit-relocs instead of -pie to reduce dynamic relocation space on mapped memory. It also simplifies the relocation process. - Move the start the module section next to the kernel. Remove the need for -mcmodel=large on modules. Extends