riscv/musl - musl - Gitea: Git with a cup of tea

History

Rich Felker f3ddd17380 dynamic linker bootstrap overhaul this overhaul further reduces the amount of arch-specific code needed by the dynamic linker and removes a number of assumptions, including: - that symbolic function references inside libc are bound at link time via the linker option -Bsymbolic-functions. - that libc functions used by the dynamic linker do not require access to data symbols. - that static/internal function calls and data accesses can be made without performing any relocations, or that arch-specific startup code handled any such relocations needed. removing these assumptions paves the way for allowing libc.so itself to be built with stack protector (among other things), and is achieved by a three-stage bootstrap process: 1. relative relocations are processed with a flat function. 2. symbolic relocations are processed with no external calls/data. 3. main program and dependency libs are processed with a fully-functional libc/ldso. reduction in arch-specific code is achived through the following: - crt_arch.h, used for generating crt1.o, now provides the entry point for the dynamic linker too. - asm is no longer responsible for skipping the beginning of argv[] when ldso is invoked as a command. - the functionality previously provided by __reloc_self for heavily GOT-dependent RISC archs is now the arch-agnostic stage-1. - arch-specific relocation type codes are mapped directly as macros rather than via an inline translation function/switch statement.		11 years ago
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bits	move O_PATH definition back to arch bits	11 years ago
src	fix __aeabi_read_tp oversight in arm atomics/tls overhaul	12 years ago
atomic.h	overhaul ARM atomics/tls for performance and compatibility	12 years ago
crt_arch.h	dynamic linker bootstrap overhaul	11 years ago
pthread_arch.h	overhaul ARM atomics/tls for performance and compatibility	12 years ago
reloc.h	dynamic linker bootstrap overhaul	11 years ago
syscall_arch.h	inline 5- and 6-argument syscalls on arm	12 years ago