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generalize machine ops

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This commit is contained in:
Nikita Smith
2025-12-16 10:40:48 -08:00
parent 782f87e512
commit 952afd49a7
7 changed files with 89 additions and 119 deletions
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src/demon/linux/demon_core_linux.c
+9 -9
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@@ -117,6 +117,12 @@ dmn_lnx_read_string(Arena *arena, int memory_fd, U64 vaddr)
return dmn_lnx_read_string_capped(arena, memory_fd, vaddr, 4096);
}
internal
MACHINE_OP_MEM_READ(dmn_lnx_machine_op_mem_read)
{
return dmn_lnx_read(((DMN_LNX_Entity *)ud)->fd, r1u64(addr, addr + buffer_size), buffer);
}
internal int
dmn_lnx_ptrace_seize(pid_t pid)
{
@@ -673,12 +679,6 @@ dmn_lnx_dl_path_from_pid(Arena *arena, pid_t pid, U64 auxv_base)
return dl_path;
}
internal
GNU_MEM_READ(dmn_lnx_gnu_mem_read)
{
return dmn_lnx_read(((DMN_LNX_Entity *)ud)->fd, r1u64(addr, addr + size), buffer);
}
////////////////////////////////
//~ SDT Probes
@@ -1799,9 +1799,9 @@ dmn_lnx_hanlde_unload_module(Arena *arena, DMN_EventList *events, DMN_LNX_Entity
// mark live modules
B32 is_64bit = process->dl_class == ELF_Class_64;
GNU_RDebugInfoList rdebug_list = gnu_parse_rdebug(scratch.arena, is_64bit, rdebug_vaddr, dmn_lnx_gnu_mem_read, process);
GNU_RDebugInfoList rdebug_list = gnu_parse_rdebug(scratch.arena, is_64bit, rdebug_vaddr, dmn_lnx_machine_op_mem_read, process);
for EachNode(rdebug_n, GNU_RDebugInfoNode, rdebug_list.first) {
GNU_LinkMapList link_map_list = gnu_parse_link_map_list(scratch.arena, is_64bit, rdebug_n->v.r_map, dmn_lnx_gnu_mem_read, process);
GNU_LinkMapList link_map_list = gnu_parse_link_map_list(scratch.arena, is_64bit, rdebug_n->v.r_map, dmn_lnx_machine_op_mem_read, process);
for EachNode(link_map_n, GNU_LinkMapNode, link_map_list.first) {
DMN_LNX_Entity *module = hash_table_search_u64_raw(process->loaded_modules_ht, link_map_n->v.addr_vaddr);
module->is_live = 1;
@@ -2078,7 +2078,7 @@ dmn_lnx_handle_attach(Arena *arena, DMN_EventList *events, pid_t pid)
// extract modules from r_debug
B32 is_64bit = process->dl_class == ELF_Class_64;
GNU_RDebugInfoList rdebug_list = gnu_parse_rdebug(scratch.arena, is_64bit, process->rdebug_vaddr, dmn_lnx_gnu_mem_read, process);
GNU_RDebugInfoList rdebug_list = gnu_parse_rdebug(scratch.arena, is_64bit, process->rdebug_vaddr, dmn_lnx_machine_op_mem_read, process);
U64 name_space_id = 0;
for EachNode(rdebug_n, GNU_RDebugInfoNode, rdebug_list.first)
{