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dynamic: x86_64: Runtime dynamic instrumentation #1698

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dynamic: x86_64: Runtime dynamic instrumentation #1698

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b0557dd
dynamic: Load dynamic info only once
clementguidi Apr 10, 2023
e65ea2f
dynamic: Initialize size filter only once
clementguidi Apr 10, 2023
b81a6fa
dynamic: arch: Initialize disassembly engine once
clementguidi Apr 10, 2023
9a1c695
dynamic: Discard the pattern list after update
clementguidi Apr 10, 2023
38b823b
dynamic: Refactor 'mcount_dynamic_update'
clementguidi Apr 10, 2023
faefcfa
dynamic: Streamline trampoline life cycle
clementguidi Mar 7, 2023
eb8e4df
dynamic: x86_64: Skip already patched functions
clementguidi Mar 8, 2023
03052c9
uftrace: Don't patch all functions by default
clementguidi Mar 10, 2023
417dfd0
mcount: Don't unpatch unmatched functions
clementguidi Mar 21, 2023
ad01830
dynamic: Refactor 'match_pattern_list'
clementguidi Apr 10, 2023
8725dbd
configure: Check for membarrier support
clementguidi Mar 10, 2023
ea149d6
utils: Implement syscall wrappers for glibc < 2.30
clementguidi Apr 3, 2023
25a8cea
utils: Define signal related functions
clementguidi Apr 4, 2023
45fc1f6
mcount: Init arch-specific dynamic structures
clementguidi Apr 4, 2023
ddf6420
x86_64: dynamic: Refactor 'get_target_address'
clementguidi Apr 4, 2023
1a572ae
x86_64: dynamic: Refactor 'patch_code'
clementguidi Apr 4, 2023
52a0113
x86_64: dynamic: Protect patch zone with trap
clementguidi Apr 4, 2023
5525472
x86_64: dynamic: Synchronize cores when patching
clementguidi Apr 4, 2023
c8070e6
x86_64: dynamic: Move threads out of patching zone
clementguidi Apr 4, 2023
94fed36
x86_64: dynamic: Comment patching process
clementguidi Apr 4, 2023
9b29fab
dynamic: Batch function patching process
clementguidi Apr 10, 2023
e076460
dynamic: x86_64: Factor out 'check_endbr64'
clementguidi Apr 10, 2023
77d4a6e
dynamic: x86_64: Full-dynamic runtime unpatching
clementguidi Mar 10, 2023
c97f295
dynamic: Batch function unpatching process
clementguidi Apr 10, 2023
05a4a04
mcount: Store filter settings as global variable
clementguidi Apr 12, 2023
606e5d7
mcount: Set match pattern type at runtime
clementguidi Feb 13, 2023
c47c117
uftrace: Apply dynamic (un)patching at runtime
clementguidi Mar 7, 2023
9c8977a
mcount: Use flag to indicate if target is running
clementguidi Apr 10, 2023
4f8b531
dynamic: x86_64: Use soft patching in cold targets
clementguidi Apr 10, 2023
d146f90
dynamic: Collect and display dynamic stats
clementguidi May 3, 2023
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11 changes: 10 additions & 1 deletion arch/aarch64/mcount-insn.c
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Original file line number Diff line number Diff line change
Expand Up @@ -8,10 +8,19 @@
#include <capstone/capstone.h>
#include <capstone/platform.h>

/**
* mcount_disasm_init - initialize the capstone engine once
* @disasm - mcount disassembly engine
*/
void mcount_disasm_init(struct mcount_disasm_engine *disasm)
{
if (disasm->engine)
return;

pr_dbg2("initialize disassembly engine\n");

if (cs_open(CS_ARCH_ARM64, CS_MODE_ARM, &disasm->engine) != CS_ERR_OK) {
pr_dbg("failed to init Capstone disasm engine\n");
pr_dbg("failed to init capstone disasm engine\n");
return;
}

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