https://git.reactos.org/?p=reactos.git;a=commitdiff;h=5489efcb1abaea61f2033909d4a8636045690d57
commit 5489efcb1abaea61f2033909d4a8636045690d57 Author: Jérôme Gardou <[email protected]> AuthorDate: Wed Feb 24 10:14:40 2021 +0100 Commit: Jérôme Gardou <[email protected]> CommitDate: Tue Mar 23 11:18:43 2021 +0100 [SDK:TOOLS] Add --driver option to pefixup For now, this adds IMAGE_SCN_MEM_DISCARDABLE to the INIT section, and IMAGE_SCN_MEM_NOT_PAGED to sections which are not named PAGE or .reloc --- sdk/cmake/gcc.cmake | 2 +- sdk/tools/pefixup.c | 85 +++++++++++++++++++++++++++++++++++++++++++++-------- 2 files changed, 74 insertions(+), 13 deletions(-) diff --git a/sdk/cmake/gcc.cmake b/sdk/cmake/gcc.cmake index 9c0bce9c685..9f38f811e4d 100644 --- a/sdk/cmake/gcc.cmake +++ b/sdk/cmake/gcc.cmake @@ -308,7 +308,7 @@ endif() function(fixup_load_config _target) add_custom_command(TARGET ${_target} POST_BUILD - COMMAND native-pefixup "$<TARGET_FILE:${_target}>" + COMMAND native-pefixup --loadconfig "$<TARGET_FILE:${_target}>" COMMENT "Patching in LOAD_CONFIG" DEPENDS native-pefixup) endfunction() diff --git a/sdk/tools/pefixup.c b/sdk/tools/pefixup.c index 07a1d71121d..81dfcc96c5a 100644 --- a/sdk/tools/pefixup.c +++ b/sdk/tools/pefixup.c @@ -24,6 +24,12 @@ static const char* g_ApplicationName; static const char* g_Target; +enum fixup_mode +{ + MODE_LOADCONFIG, + MODE_DRIVER +}; + void *rva_to_ptr(unsigned char *buffer, PIMAGE_NT_HEADERS nt_header, DWORD rva) { unsigned int i; @@ -121,6 +127,47 @@ static int add_loadconfig(unsigned char *buffer, PIMAGE_NT_HEADERS nt_header) return 1; } +static int driver_fixup(unsigned char *buffer, PIMAGE_NT_HEADERS nt_header) +{ + /* GNU LD just doesn't know what a driver is, and has notably no idea of paged vs non-paged sections */ + for (unsigned i = 0; i < nt_header->FileHeader.NumberOfSections; i++) + { + PIMAGE_SECTION_HEADER Section = IMAGE_FIRST_SECTION(nt_header) + i; + + /* Known sections which can be discarded */ + if (strncasecmp((char*)Section->Name, "INIT", 4) == 0) + { + Section->Characteristics |= IMAGE_SCN_MEM_DISCARDABLE; + continue; + } + + /* Known sections which can be paged */ + if ((strncasecmp((char*)Section->Name, "PAGE", 4) == 0) + || (strncasecmp((char*)Section->Name, ".reloc", 6) == 0)) + { + continue; + } + + /* If it's discardable, don't set the flag */ + if (Section->Characteristics & IMAGE_SCN_MEM_DISCARDABLE) + continue; + + Section->Characteristics |= IMAGE_SCN_MEM_NOT_PAGED; + } + + return 0; +} + +static +void +print_usage(void) +{ + printf("Usage: %s <mode> <filename>\n", g_ApplicationName); + printf("Where <mode> is on of the following:\n"); + printf(" --loadconfig Fix the LOAD_CONFIG directory entry\n"); + printf(" --driver Fix code and data sections for driver images\n"); +} + int main(int argc, char **argv) { FILE* file; @@ -128,19 +175,34 @@ int main(int argc, char **argv) unsigned char *buffer; PIMAGE_DOS_HEADER dos_header; int result = 1; + enum fixup_mode mode; g_ApplicationName = argv[0]; - if (argc < 2) + if (argc != 3) { - printf("Usage: %s <filename>\n", g_ApplicationName); + print_usage(); return 1; } - g_Target = argv[1]; + if (strcmp(argv[1], "--loadconfig") == 0) + { + mode = MODE_LOADCONFIG; + } + else if (strcmp(argv[1], "--driver") == 0) + { + mode = MODE_DRIVER; + } + else + { + print_usage(); + return 1; + } + + g_Target = argv[2]; /* Read the whole file to memory. */ - file = fopen(argv[1], "r+b"); + file = fopen(g_Target, "r+b"); if (!file) { fprintf(stderr, "%s ERROR: Can't open '%s'.\n", g_ApplicationName, g_Target); @@ -180,20 +242,19 @@ int main(int argc, char **argv) if (nt_header->Signature == IMAGE_NT_SIGNATURE) { - if (!add_loadconfig(buffer, nt_header)) + if (mode == MODE_LOADCONFIG) + result = add_loadconfig(buffer, nt_header); + else + result = driver_fixup(buffer, nt_header); + + if (!result) { + /* Success. Fix checksum and write to file */ fix_checksum(buffer, len, nt_header); /* We could 'optimize by only writing the changed parts, but keep it simple for now */ fseek(file, 0, SEEK_SET); fwrite(buffer, 1, len, file); - - /* Success */ - result = 0; - } - else - { - /* Error already printed inside add_loadconfig */ } } else
