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author | vanhauser-thc <vh@thc.org> | 2021-04-28 10:59:34 +0200 |
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committer | vanhauser-thc <vh@thc.org> | 2021-04-28 10:59:34 +0200 |
commit | dde0538b484df627dac14ff030dd09f55c78558e (patch) | |
tree | dda2a4eee4079d9605c002429f8944cfcbb500d8 /utils/qemu_persistent_hook | |
parent | 39ad3b89467d6de12cbb9d08ccd77d331c0d1f9e (diff) | |
download | afl++-dde0538b484df627dac14ff030dd09f55c78558e.tar.gz |
nits
Diffstat (limited to 'utils/qemu_persistent_hook')
-rw-r--r-- | utils/qemu_persistent_hook/read_into_rdi.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/utils/qemu_persistent_hook/read_into_rdi.c b/utils/qemu_persistent_hook/read_into_rdi.c index c1c6642f..14b2ed85 100644 --- a/utils/qemu_persistent_hook/read_into_rdi.c +++ b/utils/qemu_persistent_hook/read_into_rdi.c @@ -3,12 +3,12 @@ #include <stdio.h> #include <string.h> -void afl_persistent_hook(struct x86_64_regs *regs, uint64_t guest_base, - uint8_t *input_buf, uint32_t input_buf_len) { - #define g2h(x) ((void *)((unsigned long)(x) + guest_base)) #define h2g(x) ((uint64_t)(x)-guest_base) +void afl_persistent_hook(struct x86_64_regs *regs, uint64_t guest_base, + uint8_t *input_buf, uint32_t input_buf_len) { + // In this example the register RDI is pointing to the memory location // of the target buffer, and the length of the input is in RSI. // This can be seen with a debugger, e.g. gdb (and "disass main") @@ -19,11 +19,11 @@ void afl_persistent_hook(struct x86_64_regs *regs, uint64_t guest_base, memcpy(g2h(regs->rdi), input_buf, input_buf_len); regs->rsi = input_buf_len; +} + #undef g2h #undef h2g -} - int afl_persistent_hook_init(void) { // 1 for shared memory input (faster), 0 for normal input (you have to use |