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Commit c73eb2ff authored by Johann's avatar Johann
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Use shared object files for ELF 

Fixes #326

Change-Id: I5f2a4257430ef62f674190acefd43a0474821288
parent d1c0ba8f
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Showing with 99 additions and 11 deletions
build/make/Makefile
View file @ c73eb2ff
......@@ -220,11 +220,14 @@ define so_template
# for creating them.
#
# This needs further abstraction for dealing with non-GNU linkers.
comma := ,
$(1):
$(if $(quiet),@echo " [LD] $$@")
$(qexec)$$(LD) -shared $$(LDFLAGS) \
-Wl,--no-undefined -Wl,-soname,$$(SONAME) \
-Wl,--version-script,$$(SO_VERSION_SCRIPT) -o $$@ \
-Wl,--no-undefined \
$$(if $$(SONAME), -Wl$$(comma)-soname$$(comma)$$(SONAME)) \
$$(if $$(SO_VERSION_SCRIPT), -Wl$$(comma)--version-script$$(comma)$$(SO_VERSION_SCRIPT)) \
-o $$@ \
$$(filter %.o,$$?) $$(extralibs)
endef
......@@ -291,7 +294,7 @@ LIBS=$(call enabled,LIBS)
.libs: $(LIBS)
@touch $@
$(foreach lib,$(filter %_g.a,$(LIBS)),$(eval $(call archive_template,$(lib))))
$(foreach lib,$(filter %so.$(VERSION_MAJOR).$(VERSION_MINOR).$(VERSION_PATCH),$(LIBS)),$(eval $(call so_template,$(lib))))
$(foreach lib,$(filter %.so %so.$(VERSION_MAJOR).$(VERSION_MINOR).$(VERSION_PATCH),$(LIBS)),$(eval $(call so_template,$(lib))))
INSTALL-LIBS=$(call cond_enabled,CONFIG_INSTALL_LIBS,INSTALL-LIBS)
ifeq ($(MAKECMDGOALS),dist)
......
build/make/obj_int_extract.c
View file @ c73eb2ff
......@@ -347,6 +347,46 @@ bail:
return 1;
}
int parse_elf_program(elf_obj_t *elf, int idx, Elf32_Phdr *phdr32, Elf64_Phdr *phdr64)
{
if (phdr32)
{
if (idx >= elf->hdr32.e_phnum)
goto bail;
COPY_STRUCT(phdr32, elf->buf, elf->hdr32.e_phoff + idx * elf->hdr32.e_phentsize,
elf->sz);
ENDIAN_ASSIGN_IN_PLACE(phdr32->p_type);
ENDIAN_ASSIGN_IN_PLACE(phdr32->p_offset);
ENDIAN_ASSIGN_IN_PLACE(phdr32->p_vaddr);
ENDIAN_ASSIGN_IN_PLACE(phdr32->p_paddr);
ENDIAN_ASSIGN_IN_PLACE(phdr32->p_filesz);
ENDIAN_ASSIGN_IN_PLACE(phdr32->p_memsz);
ENDIAN_ASSIGN_IN_PLACE(phdr32->p_flags);
ENDIAN_ASSIGN_IN_PLACE(phdr32->p_align);
}
else /* if (phdr64) */
{
if (idx >= elf->hdr64.e_phnum)
goto bail;
COPY_STRUCT(phdr64, elf->buf, elf->hdr64.e_phoff + idx * elf->hdr64.e_phentsize,
elf->sz);
ENDIAN_ASSIGN_IN_PLACE(phdr64->p_type);
ENDIAN_ASSIGN_IN_PLACE(phdr64->p_offset);
ENDIAN_ASSIGN_IN_PLACE(phdr64->p_vaddr);
ENDIAN_ASSIGN_IN_PLACE(phdr64->p_paddr);
ENDIAN_ASSIGN_IN_PLACE(phdr64->p_filesz);
ENDIAN_ASSIGN_IN_PLACE(phdr64->p_memsz);
ENDIAN_ASSIGN_IN_PLACE(phdr64->p_flags);
ENDIAN_ASSIGN_IN_PLACE(phdr64->p_align);
}
return 0;
bail:
return 1;
}
char *parse_elf_string_table(elf_obj_t *elf, int s_idx, int idx)
{
if (elf->bits == 32)
......@@ -411,15 +451,19 @@ int parse_elf(uint8_t *buf, size_t sz, output_fmt_t mode)
int i;
Elf32_Off strtab_off32;
Elf64_Off strtab_off64; /* save String Table offset for later use */
Elf32_Word load_alignment32;
Elf64_Xword load_alignment64;
memset(&elf, 0, sizeof(elf));
elf.buf = buf;
elf.sz = sz;
/* Parse Header */
if (parse_elf_header(&elf))
goto bail;
/* Parse Section and Program headers for string table offset and data
* aligment, respectively.
*/
if (elf.bits == 32)
{
Elf32_Shdr shdr;
......@@ -441,6 +485,15 @@ int parse_elf(uint8_t *buf, size_t sz, output_fmt_t mode)
}
}
}
Elf32_Phdr phdr;
for (i = 0; i< elf.hdr32.e_phnum; i++)
{
parse_elf_program(&elf, i, &phdr, NULL);
if (phdr.p_type == PT_LOAD)
{
load_alignment32 = phdr.p_align;
}
}
}
else /* if (elf.bits == 64) */
{
......@@ -463,6 +516,15 @@ int parse_elf(uint8_t *buf, size_t sz, output_fmt_t mode)
}
}
}
Elf64_Phdr phdr;
for (i = 0; i< elf.hdr64.e_phnum; i++)
{
parse_elf_program(&elf, i, NULL, &phdr);
if (phdr.p_type == PT_LOAD)
{
load_alignment64 = phdr.p_align;
}
}
}
/* Parse all Symbol Tables */
......@@ -473,7 +535,7 @@ int parse_elf(uint8_t *buf, size_t sz, output_fmt_t mode)
{
parse_elf_section(&elf, i, &shdr, NULL);
if (shdr.sh_type == SHT_SYMTAB)
if (shdr.sh_type == SHT_DYNSYM)
{
for (ofst = shdr.sh_offset;
ofst < shdr.sh_offset + shdr.sh_size;
......@@ -520,7 +582,7 @@ int parse_elf(uint8_t *buf, size_t sz, output_fmt_t mode)
}
memcpy(&val,
elf.buf + dhdr.sh_offset + sym.st_value,
elf.buf + (sym.st_value - load_alignment32),
sym.st_size);
}
......@@ -565,7 +627,7 @@ int parse_elf(uint8_t *buf, size_t sz, output_fmt_t mode)
{
parse_elf_section(&elf, i, NULL, &shdr);
if (shdr.sh_type == SHT_SYMTAB)
if (shdr.sh_type == SHT_DYNSYM)
{
for (ofst = shdr.sh_offset;
ofst < shdr.sh_offset + shdr.sh_size;
......@@ -612,7 +674,7 @@ int parse_elf(uint8_t *buf, size_t sz, output_fmt_t mode)
}
memcpy(&val,
elf.buf + dhdr.sh_offset + sym.st_value,
elf.buf + (sym.st_value - load_alignment64),
sym.st_size);
}
......
libs.mk
View file @ c73eb2ff
......@@ -257,12 +257,27 @@ $(filter %$(ASM).o,$(OBJS-yes)): $(BUILD_PFX)vpx_config.asm
#
# Calculate platform- and compiler-specific offsets for hand coded assembly
#
#
# Parse shared object files for elf, object files for mach-o and coff
#
ifeq ($(TGT_OS), linux)
OIE_LIB:=yes
OIE_EXT:=.so
else
OIE_EXT:=.o
endif
ifeq ($(CONFIG_EXTERNAL_BUILD),) # Visual Studio uses obj_int_extract.bat
ifeq ($(ARCH_ARM), yes)
asm_com_offsets.asm: obj_int_extract
asm_com_offsets.asm: $(VP8_PREFIX)common/asm_com_offsets.c.o
asm_com_offsets.asm: $(VP8_PREFIX)common/asm_com_offsets.c$(OIE_EXT)
./obj_int_extract rvds $< $(ADS2GAS) > $@
OBJS-yes += $(VP8_PREFIX)common/asm_com_offsets.c.o
ifeq ($(OIE_LIB), yes)
$(VP8_PREFIX)common/asm_com_offsets.c.so: $(VP8_PREFIX)common/asm_com_offsets.c.o
LIBS-yes += $(VP8_PREFIX)common/asm_com_offsets.c.so
endif
CLEAN-OBJS += asm_com_offsets.asm
$(filter %$(ASM).o,$(OBJS-yes)): $(BUILD_PFX)asm_com_offsets.asm
endif
......@@ -270,9 +285,13 @@ ifeq ($(CONFIG_EXTERNAL_BUILD),) # Visual Studio uses obj_int_extract.bat
ifeq ($(ARCH_ARM)$(ARCH_X86)$(ARCH_X86_64), yes)
ifeq ($(CONFIG_VP8_ENCODER), yes)
asm_enc_offsets.asm: obj_int_extract
asm_enc_offsets.asm: $(VP8_PREFIX)encoder/asm_enc_offsets.c.o
asm_enc_offsets.asm: $(VP8_PREFIX)encoder/asm_enc_offsets.c$(OIE_EXT)
./obj_int_extract rvds $< $(ADS2GAS) > $@
OBJS-yes += $(VP8_PREFIX)encoder/asm_enc_offsets.c.o
ifeq ($(OIE_LIB), yes)
$(VP8_PREFIX)encoder/asm_enc_offsets.c.so: $(VP8_PREFIX)encoder/asm_enc_offsets.c.o
LIBS-yes += $(VP8_PREFIX)encoder/asm_enc_offsets.c.so
endif
CLEAN-OBJS += asm_enc_offsets.asm
$(filter %$(ASM).o,$(OBJS-yes)): $(BUILD_PFX)asm_enc_offsets.asm
endif
......@@ -281,9 +300,13 @@ ifeq ($(CONFIG_EXTERNAL_BUILD),) # Visual Studio uses obj_int_extract.bat
ifeq ($(ARCH_ARM), yes)
ifeq ($(CONFIG_VP8_DECODER), yes)
asm_dec_offsets.asm: obj_int_extract
asm_dec_offsets.asm: $(VP8_PREFIX)decoder/asm_dec_offsets.c.o
asm_dec_offsets.asm: $(VP8_PREFIX)decoder/asm_dec_offsets.c$(OIE_EXT)
./obj_int_extract rvds $< $(ADS2GAS) > $@
OBJS-yes += $(VP8_PREFIX)decoder/asm_dec_offsets.c.o
ifeq ($(OIE_LIB), yes)
$(VP8_PREFIX)decoder/asm_dec_offsets.c.so: $(VP8_PREFIX)decoder/asm_dec_offsets.c.o
LIBS-yes += $(VP8_PREFIX)decoder/asm_dec_offsets.c.so
endif
CLEAN-OBJS += asm_dec_offsets.asm
$(filter %$(ASM).o,$(OBJS-yes)): $(BUILD_PFX)asm_dec_offsets.asm
endif
......
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