user: What is the c source code of the assembly code below:

```asm
<help>:
  endbr64
  sub    $0x8,%rsp
  mov    (%rdi),%rsi
  mov    %rsi,%r9
  mov    %rsi,%r8
  mov    %rsi,%rcx
  mov    %rsi,%rdx
  lea    D7(%rip),%rdi
  call   <printf@plt>
  add    $0x8,%rsp
  ret
```

tool_calls: name: retrieve_data
arguments: data_tag: D7
type_guessed: string

tool: {"D7": "Prints distances between nodes, following tree branches, in various ways.\n\nSynopsis\n--------\n\n%s [-hmnst] <tree file|-> [label]*\n\nInput\n-----\n\nFirst argument is the name of a file containing one or more trees, or '-'\n(in which case trees are read from standard input). Any subsequent arguments\nare node labels.\n\nOutput\n------\n\nOutput is controlled by the mode and the selection. The mode specifies how\nto compute distances, and the selection specifies which nodes to compute\ndistances for. There are four modes:\n    o root mode (default): print distances from the tree's root to all\n      nodes in the selection\n    o last common ancestor mode: print distances from the LCA of all nodes\n      in the selection to all nodes in the selection\n    o parent mode: print distances from each node in the selection\n      to its parent (0 for the root node)\n    o matrix mode: print distances from each node in the selection\n      to each node in the selection\nValid selections are:\n    o all labeled leaves (default): selection is formed by all labeled\n      leaf nodes, in the order in which they appear in the Newick string\n      (= Newick order)\n    o all labeled nodes: selection is formed by all labeled nodes, in\n      Newick order (see Option -s)\n    o all leaves: selection is formed by all leaves nodes, in\n      Newick order (see Option -s)\n    o all internal nodes: selection is formed by all internal nodes, in\n      Newick order (see Option -s)\n    o all nodes: selection is formed by all nodes, in Newick order\n      (see Option -s)\n    o command line arguments: labels are passed on the command line,\n      and the selection is formed by the corresponding nodes, in the\n      same order.\n\nOptions\n-------\n\n    -h: print this message and exit \n    -m <mode>: selects mode (see Output). Mode is determined by the first\n        letter of the argument: 'r' for root mode (default), 'l' for LCA,\n        'p' for parent, and 'm' for matrix. Thus, '-mm', '-m matrix',\n        and '-m mat' all select matrix mode.\n    -n: prints labels (or '' if empty) in addition to distances.\n    -s <selection>, where selection is determined by the first letter of\n        the argument: 'a' for all nodes, 'l' for labeled nodes,\n        'i' for inner nodes, 'f' for leaves.\n        E.g. '-s a' and '-s all' both select all nodes.\n    -t: in matrix mode, print a triangular matrix. In other modes,\n        print values on a line, separated by TABs.\n\nAssumptions and Limitations\n---------------------------\n\nLabels passed as arguments are assumed to exist in the tree. Behaviour is\nundefined if a label is not found.\n\nExamples\n--------\n\n$ %s data/catarrhini\t# all (labeled) leaves, from root\n\n# Pongo and Homo, from their LCA, with labels, single line\n$ %s -m lca -t -n data/catarrhini Homo Pongo \n\n# All labeled nodes, matrix form, with labels\n$ %s -mm -n -sl data/catarrhini\n\n# All nodes, distance to parent\n$ %s -m p -s a data/catarrhini\n"}

assistant: ```c
void help(char *argv[]) {
  printf("Prints distances between nodes, following tree branches, in various ways.\n"
         "\n"
         "Synopsis\n"
         "--------\n"
         "\n"
         "%s [-hmnst] <tree file|-> [label]*\n"
         "\n"
         "Input\n"
         "-----\n"
         "\n"
         "First argument is the name of a file containing one or more trees, or '-'\n"
         "(in which case trees are read from standard input). Any subsequent arguments\n"
         "are node labels.\n"
         "\n"
         "Output\n"
         "------\n"
         "\n"
         "Output is controlled by the mode and the selection. The mode specifies how\n"
         "to compute distances, and the selection specifies which nodes to compute\n"
         "distances for. There are four modes:\n"
         "    o root mode (default): print distances from the tree's root to all\n"
         "      nodes in the selection\n"
         "    o last common ancestor mode: print distances from the LCA of all nodes\n"
         "      in the selection to all nodes in the selection\n"
         "    o parent mode: print distances from each node in the selection\n"
         "      to its parent (0 for the root node)\n"
         "    o matrix mode: print distances from each node in the selection\n"
         "      to each node in the selection\n"
         "Valid selections are:\n"
         "    o all labeled leaves (default): selection is formed by all labeled\n"
         "      leaf nodes, in the order in which they appear in the Newick string\n"
         "      (= Newick order)\n"
         "    o all labeled nodes: selection is formed by all labeled nodes, in\n"
         "      Newick order (see Option -s)\n"
         "    o all leaves: selection is formed by all leaves nodes, in\n"
         "      Newick order (see Option -s)\n"
         "    o all internal nodes: selection is formed by all internal nodes, in\n"
         "      Newick order (see Option -s)\n"
         "    o all nodes: selection is formed by all nodes, in Newick order\n"
         "      (see Option -s)\n"
         "    o command line arguments: labels are passed on the command line,\n"
         "      and the selection is formed by the corresponding nodes, in the\n"
         "      same order.\n"
         "\n"
         "Options\n"
         "-------\n"
         "\n"
         "    -h: print this message and exit \n"
         "    -m <mode>: selects mode (see Output). Mode is determined by the first\n"
         "        letter of the argument: 'r' for root mode (default), 'l' for LCA,\n"
         "        'p' for parent, and 'm' for matrix. Thus, '-mm', '-m matrix',\n"
         "        and '-m mat' all select matrix mode.\n"
         "    -n: prints labels (or '' if empty) in addition to distances.\n"
         "    -s <selection>, where selection is determined by the first letter of\n"
         "        the argument: 'a' for all nodes, 'l' for labeled nodes,\n"
         "        'i' for inner nodes, 'f' for leaves.\n"
         "        E.g. '-s a' and '-s all' both select all nodes.\n"
         "    -t: in matrix mode, print a triangular matrix. In other modes,\n"
         "        print values on a line, separated by TABs.\n"
         "\n"
         "Assumptions and Limitations\n"
         "---------------------------\n"
         "\n"
         "Labels passed as arguments are assumed to exist in the tree. Behaviour is\n"
         "undefined if a label is not found.\n"
         "\n"
         "Examples\n"
         "--------\n"
         "\n"
         "$ %s data/catarrhini	# all (labeled) leaves, from root\n"
         "\n"
         "# Pongo and Homo, from their LCA, with labels, single line\n"
         "$ %s -m lca -t -n data/catarrhini Homo Pongo \n"
         "\n"
         "# All labeled nodes, matrix form, with labels\n"
         "$ %s -mm -n -sl data/catarrhini\n"
         "\n"
         "# All nodes, distance to parent\n"
         "$ %s -m p -s a data/catarrhini\n",
         argv[0], argv[0], argv[0], argv[0], argv[0]);
}
```