55f1a63faf
- Implements application tracing module which allows to send arbitrary data to host over JTAG. This feature is useful for analyzing program modules behavior, dumping run-time application data etc. - Implements printf-like logging functions on top of apptrace module. This feature is a kind of semihosted printf functionality with lower overhead and impact on system behaviour as compared to standard printf.
39 lines
1 KiB
Python
39 lines
1 KiB
Python
from .. import *
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from ..types import *
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from ..constants import *
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from ctypes import *
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import os
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def _class(elf): return ord(elf_getident(elf, None).contents[EI_CLASS])
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def is32(elf): return _class(elf) == ELFCLASS32
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def is64(elf): return _class(elf) == ELFCLASS64
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def select(elf, fname):
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if is32(elf):
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return globals()['elf32_' + fname]
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else:
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return globals()['elf64_' + fname]
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def section_name(elfP, secP):
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shstrndx = c_size_t()
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r = elf_getshstrndx(elfP, byref(shstrndx))
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shdr = select(elfP, 'getshdr')(secP)
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return elf_strptr(elfP, shstrndx, shdr.contents.sh_name)
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def section_type(elfP, secP):
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return select(elfP, 'getshdr')(secP).contents.sh_type
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def section_link(elfP, secP):
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return select(elfP, 'getshdr')(secP).contents.sh_link
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def section_hdr(elfP, secP):
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return select(elfP, 'getshdr')(secP).contents
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def open_elf(fname):
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fd = os.open(fname, os.O_RDONLY)
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return elf_begin(fd, ELF_C_READ, None)
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def sym_name(elf, scn, sym):
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return elf_strptr(elf, section_link(elf, scn), sym.st_name)
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