Differential D1757 Diff 3831 head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_link.c

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head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_link.c

Show First 20 Lines • Show All 275 Lines • ▼ Show 20 Lines	#endif
/*		/*
* Add a symbol for the DOF itself. We use a different symbol for		* Add a symbol for the DOF itself. We use a different symbol for
* lazily and actively loaded DOF to make them easy to distinguish.		* lazily and actively loaded DOF to make them easy to distinguish.
*/		*/
sym->st_name = strtabsz;		sym->st_name = strtabsz;
sym->st_value = 0;		sym->st_value = 0;
sym->st_size = dof->dofh_filesz;		sym->st_size = dof->dofh_filesz;
sym->st_info = ELF32_ST_INFO(STB_GLOBAL, STT_OBJECT);		sym->st_info = ELF32_ST_INFO(STB_GLOBAL, STT_OBJECT);
		#ifdef illumos
sym->st_other = 0;		sym->st_other = 0;
		#else
		sym->st_other = ELF32_ST_VISIBILITY(STV_HIDDEN);
		#endif
sym->st_shndx = ESHDR_DOF;		sym->st_shndx = ESHDR_DOF;
sym++;		sym++;

if (dtp->dt_lazyload) {		if (dtp->dt_lazyload) {
bcopy(DOFLAZYSTR, dep->de_strtab + strtabsz,		bcopy(DOFLAZYSTR, dep->de_strtab + strtabsz,
sizeof (DOFLAZYSTR));		sizeof (DOFLAZYSTR));
strtabsz += sizeof (DOFLAZYSTR);		strtabsz += sizeof (DOFLAZYSTR);
} else {		} else {
▲ Show 20 Lines • Show All 173 Lines • ▼ Show 20 Lines	#endif
/*		/*
* Add a symbol for the DOF itself. We use a different symbol for		* Add a symbol for the DOF itself. We use a different symbol for
* lazily and actively loaded DOF to make them easy to distinguish.		* lazily and actively loaded DOF to make them easy to distinguish.
*/		*/
sym->st_name = strtabsz;		sym->st_name = strtabsz;
sym->st_value = 0;		sym->st_value = 0;
sym->st_size = dof->dofh_filesz;		sym->st_size = dof->dofh_filesz;
sym->st_info = GELF_ST_INFO(STB_GLOBAL, STT_OBJECT);		sym->st_info = GELF_ST_INFO(STB_GLOBAL, STT_OBJECT);
		#ifdef illumos
sym->st_other = 0;		sym->st_other = 0;
		#else
		sym->st_other = ELF64_ST_VISIBILITY(STV_HIDDEN);
		#endif
sym->st_shndx = ESHDR_DOF;		sym->st_shndx = ESHDR_DOF;
sym++;		sym++;

if (dtp->dt_lazyload) {		if (dtp->dt_lazyload) {
bcopy(DOFLAZYSTR, dep->de_strtab + strtabsz,		bcopy(DOFLAZYSTR, dep->de_strtab + strtabsz,
sizeof (DOFLAZYSTR));		sizeof (DOFLAZYSTR));
strtabsz += sizeof (DOFLAZYSTR);		strtabsz += sizeof (DOFLAZYSTR);
} else {		} else {
▲ Show 20 Lines • Show All 223 Lines • ▼ Show 20 Lines	#endif
shp->sh_type = SHT_STRTAB;		shp->sh_type = SHT_STRTAB;
shp->sh_offset = off;		shp->sh_offset = off;
shp->sh_size = sizeof (DTRACE_SHSTRTAB64);		shp->sh_size = sizeof (DTRACE_SHSTRTAB64);
shp->sh_addralign = sizeof (char);		shp->sh_addralign = sizeof (char);
off = P2ROUNDUP(shp->sh_offset + shp->sh_size, 8);		off = P2ROUNDUP(shp->sh_offset + shp->sh_size, 8);

shp = &elf_file.shdr[ESHDR_DOF];		shp = &elf_file.shdr[ESHDR_DOF];
shp->sh_name = 11; /* DTRACE_SHSTRTAB64[11] = ".SUNW_dof" */		shp->sh_name = 11; /* DTRACE_SHSTRTAB64[11] = ".SUNW_dof" */
#ifdef illumos
shp->sh_flags = SHF_ALLOC;		shp->sh_flags = SHF_ALLOC;
#else
shp->sh_flags = SHF_WRITE \| SHF_ALLOC;
#endif
shp->sh_type = SHT_SUNW_dof;		shp->sh_type = SHT_SUNW_dof;
shp->sh_offset = off;		shp->sh_offset = off;
shp->sh_size = dof->dofh_filesz;		shp->sh_size = dof->dofh_filesz;
shp->sh_addralign = 8;		shp->sh_addralign = 8;
off = shp->sh_offset + shp->sh_size;		off = shp->sh_offset + shp->sh_size;

shp = &elf_file.shdr[ESHDR_STRTAB];		shp = &elf_file.shdr[ESHDR_STRTAB];
shp->sh_name = 21; /* DTRACE_SHSTRTAB64[21] = ".strtab" */		shp->sh_name = 21; /* DTRACE_SHSTRTAB64[21] = ".strtab" */
▲ Show 20 Lines • Show All 1,142 Lines • ▼ Show 20 Lines	#else
/*		/*
* Arches which are 32-bit only just use the normal		* Arches which are 32-bit only just use the normal
* library path.		* library path.
*/		*/
int use_32 = 0;		int use_32 = 0;
#endif		#endif

(void) snprintf(drti, sizeof (drti), "/usr/lib%s/dtrace/drti.o",		(void) snprintf(drti, sizeof (drti), "/usr/lib%s/dtrace/drti.o",
use_32 ? "32":"");		use_32 ? "32" : "");

len = snprintf(&tmp, 1, fmt, dtp->dt_ld_path, file, tfile,		len = snprintf(&tmp, 1, fmt, dtp->dt_ld_path, file, tfile,
drti) + 1;		drti) + 1;

cmd = alloca(len);		cmd = alloca(len);

(void) snprintf(cmd, len, fmt, dtp->dt_ld_path, file, tfile,		(void) snprintf(cmd, len, fmt, dtp->dt_ld_path, file, tfile,
drti);		drti);
#endif		#endif
if ((status = system(cmd)) == -1) {		if ((status = system(cmd)) == -1) {
ret = dt_link_error(dtp, NULL, -1, NULL,		ret = dt_link_error(dtp, NULL, fd, NULL,
"failed to run %s: %s", dtp->dt_ld_path,		"failed to run %s: %s", dtp->dt_ld_path,
strerror(errno));		strerror(errno));
goto done;		goto done;
}		}

if (WIFSIGNALED(status)) {		if (WIFSIGNALED(status)) {
ret = dt_link_error(dtp, NULL, -1, NULL,		ret = dt_link_error(dtp, NULL, fd, NULL,
"failed to link %s: %s failed due to signal %d",		"failed to link %s: %s failed due to signal %d",
file, dtp->dt_ld_path, WTERMSIG(status));		file, dtp->dt_ld_path, WTERMSIG(status));
goto done;		goto done;
}		}

if (WEXITSTATUS(status) != 0) {		if (WEXITSTATUS(status) != 0) {
ret = dt_link_error(dtp, NULL, -1, NULL,		ret = dt_link_error(dtp, NULL, fd, NULL,
"failed to link %s: %s exited with status %d\n",		"failed to link %s: %s exited with status %d\n",
file, dtp->dt_ld_path, WEXITSTATUS(status));		file, dtp->dt_ld_path, WEXITSTATUS(status));
goto done;		goto done;
}		}
(void) close(fd); /* release temporary file */		(void) close(fd); /* release temporary file */

		#ifdef __FreeBSD__
		/*
		* Now that we've linked drti.o, reduce the global __SUNW_dof
		* symbol to a local symbol. This is needed to so that multiple
		* generated object files (for different providers, for
		* instance) can be linked together. This is accomplished using
		* the -Blocal flag with Sun's linker, but GNU ld doesn't appear
		* to have an equivalent option.
		*/
		asprintf(&cmd, "%s --localize-hidden %s", dtp->dt_objcopy_path,
		file);
		if ((status = system(cmd)) == -1) {
		ret = dt_link_error(dtp, NULL, -1, NULL,
		"failed to run %s: %s", dtp->dt_objcopy_path,
		strerror(errno));
		free(cmd);
		goto done;
		}
		free(cmd);

		if (WIFSIGNALED(status)) {
		ret = dt_link_error(dtp, NULL, -1, NULL,
		"failed to link %s: %s failed due to signal %d",
		file, dtp->dt_objcopy_path, WTERMSIG(status));
		goto done;
		}

		if (WEXITSTATUS(status) != 0) {
		ret = dt_link_error(dtp, NULL, -1, NULL,
		"failed to link %s: %s exited with status %d\n",
		file, dtp->dt_objcopy_path, WEXITSTATUS(status));
		goto done;
		}
		#endif
} else {		} else {
(void) close(fd);		(void) close(fd);
}		}

done:		done:
dtrace_dof_destroy(dtp, dof);		dtrace_dof_destroy(dtp, dof);

#ifndef illumos		#ifndef illumos
unlink(tfile);		unlink(tfile);
#endif		#endif
return (ret);		return (ret);
}		}