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head/sys/powerpc/powerpc/elf_common.c
| Show All 30 Lines | |||||
| static int | static int | ||||
| __elfN(powerpc_copyout_auxargs)(struct image_params *imgp, uintptr_t base) | __elfN(powerpc_copyout_auxargs)(struct image_params *imgp, uintptr_t base) | ||||
| { | { | ||||
| Elf_Auxargs *args; | Elf_Auxargs *args; | ||||
| Elf_Auxinfo *argarray, *pos; | Elf_Auxinfo *argarray, *pos; | ||||
| int error; | int error; | ||||
| if (imgp->proc->p_osrel >= P_OSREL_POWERPC_NEW_AUX_ARGS) | /* | ||||
| * XXX If we can't find image's OSREL, assume it uses the new auxv | |||||
| * format. | |||||
| * | |||||
| * This is specially important for rtld, that is not tagged. Using | |||||
| * direct exec mode with new (ELFv2) binaries that expect the new auxv | |||||
| * format would result in crashes otherwise. | |||||
| * | |||||
| * Unfortunately, this may break direct exec'ing old binaries, | |||||
| * but it seems better to correctly support new binaries by default, | |||||
| * considering the transition to ELFv2 happened quite some time | |||||
| * ago. If needed, a sysctl may be added to allow old auxv format to | |||||
| * be used when OSREL is not found. | |||||
| */ | |||||
| if (imgp->proc->p_osrel >= P_OSREL_POWERPC_NEW_AUX_ARGS || | |||||
| imgp->proc->p_osrel == 0) | |||||
| return (__elfN(freebsd_copyout_auxargs)(imgp, base)); | return (__elfN(freebsd_copyout_auxargs)(imgp, base)); | ||||
| args = (Elf_Auxargs *)imgp->auxargs; | args = (Elf_Auxargs *)imgp->auxargs; | ||||
| argarray = pos = malloc(AT_OLD_COUNT * sizeof(*pos), M_TEMP, | argarray = pos = malloc(AT_OLD_COUNT * sizeof(*pos), M_TEMP, | ||||
| M_WAITOK | M_ZERO); | M_WAITOK | M_ZERO); | ||||
| if (args->execfd != -1) | if (args->execfd != -1) | ||||
| AUXARGS_ENTRY(pos, AT_OLD_EXECFD, args->execfd); | AUXARGS_ENTRY(pos, AT_OLD_EXECFD, args->execfd); | ||||
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