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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 08:19:28 +00:00
Blackfin: cleanup module section checking
The current module section handling code has a lot of verbose statements copied and pasted throughout which makes it pretty hard to digest at a glance. By unifying all of these up front, it is a lot easier to quickly get an idea of what is actually going on. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
parent
70deca9f9c
commit
459fec9073
1 changed files with 60 additions and 51 deletions
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@ -53,7 +53,7 @@ void module_free(struct module *mod, void *module_region)
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/* Transfer the section to the L1 memory */
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int
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module_frob_arch_sections(Elf_Ehdr * hdr, Elf_Shdr * sechdrs,
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module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
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char *secstrings, struct module *mod)
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{
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/*
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@ -64,12 +64,18 @@ module_frob_arch_sections(Elf_Ehdr * hdr, Elf_Shdr * sechdrs,
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* NOTE: this breaks the semantic of mod->arch structure.
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*/
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Elf_Shdr *s, *sechdrs_end = sechdrs + hdr->e_shnum;
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void *dest = NULL;
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void *dest;
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for (s = sechdrs; s < sechdrs_end; ++s) {
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if ((strcmp(".l1.text", secstrings + s->sh_name) == 0) ||
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((strcmp(".text", secstrings + s->sh_name) == 0) &&
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(hdr->e_flags & EF_BFIN_CODE_IN_L1) && (s->sh_size > 0))) {
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const char *shname = secstrings + s->sh_name;
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if (s->sh_size == 0)
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continue;
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if (!strcmp(".l1.text", shname) ||
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(!strcmp(".text", shname) &&
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(hdr->e_flags & EF_BFIN_CODE_IN_L1))) {
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dest = l1_inst_sram_alloc(s->sh_size);
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mod->arch.text_l1 = dest;
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if (dest == NULL) {
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@ -78,12 +84,11 @@ module_frob_arch_sections(Elf_Ehdr * hdr, Elf_Shdr * sechdrs,
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return -1;
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}
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dma_memcpy(dest, (void *)s->sh_addr, s->sh_size);
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s->sh_flags &= ~SHF_ALLOC;
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s->sh_addr = (unsigned long)dest;
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}
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if ((strcmp(".l1.data", secstrings + s->sh_name) == 0) ||
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((strcmp(".data", secstrings + s->sh_name) == 0) &&
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(hdr->e_flags & EF_BFIN_DATA_IN_L1) && (s->sh_size > 0))) {
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} else if (!strcmp(".l1.data", shname) ||
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(!strcmp(".data", shname) &&
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(hdr->e_flags & EF_BFIN_DATA_IN_L1))) {
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dest = l1_data_sram_alloc(s->sh_size);
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mod->arch.data_a_l1 = dest;
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if (dest == NULL) {
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@ -92,12 +97,11 @@ module_frob_arch_sections(Elf_Ehdr * hdr, Elf_Shdr * sechdrs,
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return -1;
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}
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memcpy(dest, (void *)s->sh_addr, s->sh_size);
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s->sh_flags &= ~SHF_ALLOC;
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s->sh_addr = (unsigned long)dest;
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}
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if (strcmp(".l1.bss", secstrings + s->sh_name) == 0 ||
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((strcmp(".bss", secstrings + s->sh_name) == 0) &&
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(hdr->e_flags & EF_BFIN_DATA_IN_L1) && (s->sh_size > 0))) {
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} else if (!strcmp(".l1.bss", shname) ||
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(!strcmp(".bss", shname) &&
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(hdr->e_flags & EF_BFIN_DATA_IN_L1))) {
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dest = l1_data_sram_zalloc(s->sh_size);
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mod->arch.bss_a_l1 = dest;
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if (dest == NULL) {
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@ -105,10 +109,9 @@ module_frob_arch_sections(Elf_Ehdr * hdr, Elf_Shdr * sechdrs,
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mod->name);
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return -1;
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}
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s->sh_flags &= ~SHF_ALLOC;
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s->sh_addr = (unsigned long)dest;
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}
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if (strcmp(".l1.data.B", secstrings + s->sh_name) == 0) {
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} else if (!strcmp(".l1.data.B", shname)) {
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dest = l1_data_B_sram_alloc(s->sh_size);
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mod->arch.data_b_l1 = dest;
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if (dest == NULL) {
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@ -117,10 +120,9 @@ module_frob_arch_sections(Elf_Ehdr * hdr, Elf_Shdr * sechdrs,
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return -1;
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}
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memcpy(dest, (void *)s->sh_addr, s->sh_size);
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s->sh_flags &= ~SHF_ALLOC;
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s->sh_addr = (unsigned long)dest;
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}
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if (strcmp(".l1.bss.B", secstrings + s->sh_name) == 0) {
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} else if (!strcmp(".l1.bss.B", shname)) {
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dest = l1_data_B_sram_alloc(s->sh_size);
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mod->arch.bss_b_l1 = dest;
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if (dest == NULL) {
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@ -129,12 +131,11 @@ module_frob_arch_sections(Elf_Ehdr * hdr, Elf_Shdr * sechdrs,
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return -1;
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}
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memset(dest, 0, s->sh_size);
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s->sh_flags &= ~SHF_ALLOC;
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s->sh_addr = (unsigned long)dest;
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}
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if ((strcmp(".l2.text", secstrings + s->sh_name) == 0) ||
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((strcmp(".text", secstrings + s->sh_name) == 0) &&
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(hdr->e_flags & EF_BFIN_CODE_IN_L2) && (s->sh_size > 0))) {
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} else if (!strcmp(".l2.text", shname) ||
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(!strcmp(".text", shname) &&
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(hdr->e_flags & EF_BFIN_CODE_IN_L2))) {
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dest = l2_sram_alloc(s->sh_size);
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mod->arch.text_l2 = dest;
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if (dest == NULL) {
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@ -143,12 +144,11 @@ module_frob_arch_sections(Elf_Ehdr * hdr, Elf_Shdr * sechdrs,
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return -1;
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}
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memcpy(dest, (void *)s->sh_addr, s->sh_size);
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s->sh_flags &= ~SHF_ALLOC;
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s->sh_addr = (unsigned long)dest;
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}
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if ((strcmp(".l2.data", secstrings + s->sh_name) == 0) ||
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((strcmp(".data", secstrings + s->sh_name) == 0) &&
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(hdr->e_flags & EF_BFIN_DATA_IN_L2) && (s->sh_size > 0))) {
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} else if (!strcmp(".l2.data", shname) ||
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(!strcmp(".data", shname) &&
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(hdr->e_flags & EF_BFIN_DATA_IN_L2))) {
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dest = l2_sram_alloc(s->sh_size);
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mod->arch.data_l2 = dest;
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if (dest == NULL) {
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@ -157,12 +157,11 @@ module_frob_arch_sections(Elf_Ehdr * hdr, Elf_Shdr * sechdrs,
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return -1;
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}
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memcpy(dest, (void *)s->sh_addr, s->sh_size);
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s->sh_flags &= ~SHF_ALLOC;
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s->sh_addr = (unsigned long)dest;
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}
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if (strcmp(".l2.bss", secstrings + s->sh_name) == 0 ||
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((strcmp(".bss", secstrings + s->sh_name) == 0) &&
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(hdr->e_flags & EF_BFIN_DATA_IN_L2) && (s->sh_size > 0))) {
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} else if (!strcmp(".l2.bss", shname) ||
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(!strcmp(".bss", shname) &&
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(hdr->e_flags & EF_BFIN_DATA_IN_L2))) {
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dest = l2_sram_zalloc(s->sh_size);
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mod->arch.bss_l2 = dest;
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if (dest == NULL) {
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@ -170,10 +169,14 @@ module_frob_arch_sections(Elf_Ehdr * hdr, Elf_Shdr * sechdrs,
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mod->name);
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return -1;
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}
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s->sh_flags &= ~SHF_ALLOC;
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s->sh_addr = (unsigned long)dest;
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}
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} else
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continue;
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s->sh_flags &= ~SHF_ALLOC;
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s->sh_addr = (unsigned long)dest;
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}
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return 0;
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}
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@ -295,22 +298,28 @@ module_finalize(const Elf_Ehdr * hdr,
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for (i = 1; i < hdr->e_shnum; i++) {
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const char *strtab = (char *)sechdrs[strindex].sh_addr;
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unsigned int info = sechdrs[i].sh_info;
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const char *shname = secstrings + sechdrs[i].sh_name;
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/* Not a valid relocation section? */
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if (info >= hdr->e_shnum)
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continue;
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if ((sechdrs[i].sh_type == SHT_RELA) &&
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((strcmp(".rela.l2.text", secstrings + sechdrs[i].sh_name) == 0) ||
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(strcmp(".rela.l1.text", secstrings + sechdrs[i].sh_name) == 0) ||
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((strcmp(".rela.text", secstrings + sechdrs[i].sh_name) == 0) &&
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(hdr->e_flags & (EF_BFIN_CODE_IN_L1|EF_BFIN_CODE_IN_L2))))) {
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/* Only support RELA relocation types */
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if (sechdrs[i].sh_type != SHT_RELA)
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continue;
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if (!strcmp(".rela.l2.text", shname) ||
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!strcmp(".rela.l1.text", shname) ||
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(!strcmp(".rela.text", shname) &&
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(hdr->e_flags & (EF_BFIN_CODE_IN_L1 | EF_BFIN_CODE_IN_L2)))) {
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err = apply_relocate_add((Elf_Shdr *) sechdrs, strtab,
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symindex, i, mod);
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if (err < 0)
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return -ENOEXEC;
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}
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}
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return 0;
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}
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