Szabolcs Nagy 3eb1c569eb TODO(l_addr): aarch64: morello: dynamic linking support ... Add morello specific dl-machine.h. Add morello dynamic relocation processing support for purecap ABI. Only support R_AARCH64_NONE, R_AARCH64_ABS64 and R_AARCH64_RELATIVE dynamic relocs from the lp64 abi. This required several APIs to change ElfW(Addr) to uintptr_t including in generic code (where elfptr_t used to cover both traditional and capability abis). RELATIVE and IRELATIVE relocs use a helper function to construct a capability. Also fixed the IRELATIVE handling for static linking. Use new machine routines on morello for load address computation so it is a valid capability: void *elf_machine_runtime_dynamic (void) uintptr_t elf_machine_load_address_from_args (void *) The ld.so load address is either AT_BASE or if it is invoked as a command then derived from AT_PHDR or _DYNAMIC (pcc). ELF_MACHINE_START_ADDRESS is updated to turn the ElfW(Addr) user entry into a capability based on l_addr. TODO: __tls_get_addr should return a bounded pointer. (in case traditional tls is defined for morello) note: tls_index struct that is used for trad tls is changed for morello. (this is abi once trad tls is defined for morello) arguably _dl_make_tlsdesc_dynamic should set up tlsinfo.ti_size too. (but it's better to avoid changing the generic code) TODO: use cheri auxv entries to derive ld.so capabilities, this will require separate RW and RX base pointers instead of single l_addr. AT_BASE will not be a capability covering ld.so.		2022-08-05 19:45:19 +01:00
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ifunc.h	TODO(l_addr): aarch64: morello: dynamic linking support	2022-08-05 19:45:19 +01:00