diff options
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/mod/modpost.c | 2 | ||||
| -rw-r--r-- | scripts/recordmcount.c | 65 | ||||
| -rw-r--r-- | scripts/sign-file.c | 2 |
3 files changed, 68 insertions, 1 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index bd8349759095..5a6b39a29b7a 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -2371,6 +2371,7 @@ static void write_dump(const char *fname) } } write_if_changed(&buf, fname); + free(buf.p); } struct ext_sym_list { @@ -2496,6 +2497,7 @@ int main(int argc, char **argv) "Set CONFIG_SECTION_MISMATCH_WARN_ONLY=y to allow them.\n"); } } + free(buf.p); return err; } diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c index 5423a58d1b06..aeb34223167c 100644 --- a/scripts/recordmcount.c +++ b/scripts/recordmcount.c @@ -213,6 +213,59 @@ static int make_nop_x86(void *map, size_t const offset) return 0; } +static unsigned char ideal_nop4_arm_le[4] = { 0x00, 0x00, 0xa0, 0xe1 }; /* mov r0, r0 */ +static unsigned char ideal_nop4_arm_be[4] = { 0xe1, 0xa0, 0x00, 0x00 }; /* mov r0, r0 */ +static unsigned char *ideal_nop4_arm; + +static unsigned char bl_mcount_arm_le[4] = { 0xfe, 0xff, 0xff, 0xeb }; /* bl */ +static unsigned char bl_mcount_arm_be[4] = { 0xeb, 0xff, 0xff, 0xfe }; /* bl */ +static unsigned char *bl_mcount_arm; + +static unsigned char push_arm_le[4] = { 0x04, 0xe0, 0x2d, 0xe5 }; /* push {lr} */ +static unsigned char push_arm_be[4] = { 0xe5, 0x2d, 0xe0, 0x04 }; /* push {lr} */ +static unsigned char *push_arm; + +static unsigned char ideal_nop2_thumb_le[2] = { 0x00, 0xbf }; /* nop */ +static unsigned char ideal_nop2_thumb_be[2] = { 0xbf, 0x00 }; /* nop */ +static unsigned char *ideal_nop2_thumb; + +static unsigned char push_bl_mcount_thumb_le[6] = { 0x00, 0xb5, 0xff, 0xf7, 0xfe, 0xff }; /* push {lr}, bl */ +static unsigned char push_bl_mcount_thumb_be[6] = { 0xb5, 0x00, 0xf7, 0xff, 0xff, 0xfe }; /* push {lr}, bl */ +static unsigned char *push_bl_mcount_thumb; + +static int make_nop_arm(void *map, size_t const offset) +{ + char *ptr; + int cnt = 1; + int nop_size; + size_t off = offset; + + ptr = map + offset; + if (memcmp(ptr, bl_mcount_arm, 4) == 0) { + if (memcmp(ptr - 4, push_arm, 4) == 0) { + off -= 4; + cnt = 2; + } + ideal_nop = ideal_nop4_arm; + nop_size = 4; + } else if (memcmp(ptr - 2, push_bl_mcount_thumb, 6) == 0) { + cnt = 3; + nop_size = 2; + off -= 2; + ideal_nop = ideal_nop2_thumb; + } else + return -1; + + /* Convert to nop */ + ulseek(fd_map, off, SEEK_SET); + + do { + uwrite(fd_map, ideal_nop, nop_size); + } while (--cnt > 0); + + return 0; +} + static unsigned char ideal_nop4_arm64[4] = {0x1f, 0x20, 0x03, 0xd5}; static int make_nop_arm64(void *map, size_t const offset) { @@ -430,6 +483,11 @@ do_file(char const *const fname) w2 = w2rev; w8 = w8rev; } + ideal_nop4_arm = ideal_nop4_arm_le; + bl_mcount_arm = bl_mcount_arm_le; + push_arm = push_arm_le; + ideal_nop2_thumb = ideal_nop2_thumb_le; + push_bl_mcount_thumb = push_bl_mcount_thumb_le; break; case ELFDATA2MSB: if (*(unsigned char const *)&endian != 0) { @@ -438,6 +496,11 @@ do_file(char const *const fname) w2 = w2rev; w8 = w8rev; } + ideal_nop4_arm = ideal_nop4_arm_be; + bl_mcount_arm = bl_mcount_arm_be; + push_arm = push_arm_be; + ideal_nop2_thumb = ideal_nop2_thumb_be; + push_bl_mcount_thumb = push_bl_mcount_thumb_be; break; } /* end switch */ if (memcmp(ELFMAG, ehdr->e_ident, SELFMAG) != 0 @@ -463,6 +526,8 @@ do_file(char const *const fname) break; case EM_ARM: reltype = R_ARM_ABS32; altmcount = "__gnu_mcount_nc"; + make_nop = make_nop_arm; + rel_type_nop = R_ARM_NONE; break; case EM_AARCH64: reltype = R_AARCH64_ABS64; diff --git a/scripts/sign-file.c b/scripts/sign-file.c index 53af6dc3e6c1..19ec468b1168 100644 --- a/scripts/sign-file.c +++ b/scripts/sign-file.c @@ -267,7 +267,7 @@ int main(int argc, char **argv) } x509_name = argv[2]; module_name = argv[3]; - if (argc == 5) { + if (argc == 5 && strcmp(argv[3], argv[4]) != 0) { dest_name = argv[4]; replace_orig = false; } else { |