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8261431: SA: Add comments about load address of executable

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Reviewed-by: sspitsyn, kevinw
This commit is contained in:
Yasumasa Suenaga 2021-02-11 14:58:03 +00:00
parent 4a72cea019
commit c342323c7a
1 changed files with 4 additions and 0 deletions
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src/jdk.hotspot.agent/linux/native/libsaproc/ps_core.c
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@ -507,7 +507,11 @@ static uintptr_t read_exec_segments(struct ps_prochandle* ph, ELF_EHDR* exec_ehd
result = exec_php->p_vaddr; result = exec_php->p_vaddr;
ph->core->dynamic_addr = exec_php->p_vaddr; ph->core->dynamic_addr = exec_php->p_vaddr;
} else { // ET_DYN } else { // ET_DYN
// Base address of executable is based on entry point (AT_ENTRY).
result = ph->core->dynamic_addr - exec_ehdr->e_entry; result = ph->core->dynamic_addr - exec_ehdr->e_entry;
// dynamic_addr has entry point of executable.
// Thus we should subtract it.
ph->core->dynamic_addr += exec_php->p_vaddr - exec_ehdr->e_entry; ph->core->dynamic_addr += exec_php->p_vaddr - exec_ehdr->e_entry;
} }
print_debug("address of _DYNAMIC is 0x%lx\n", ph->core->dynamic_addr); print_debug("address of _DYNAMIC is 0x%lx\n", ph->core->dynamic_addr);