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Get codebase completely working with LLVM

Browse Source 
You can now build Cosmopolitan with Clang:

    make -j8 MODE=llvm
    o/llvm/examples/hello.com

The assembler and linker code is now friendly to LLVM too.
So it's not needed to configure Clang to use binutils under
the hood. If you love LLVM then you can now use pure LLVM.
This commit is contained in:
Justine Tunney
2021-02-08 09:19:00 -08:00
parent 0e36cb3ac4
commit e75ffde09e
4528 changed files with 7776 additions and 11640 deletions
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32
libc/nexgen32e/crc32init.S
View File

@@ -18,22 +18,22 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/macros.h"
/ Generates lookup table for computing CRC-32 byte-by-byte.
/
/ void crc32init(uint32_t table[256], uint32_t polynomial) {
/ uint32_t d, i, r;
/ for (d = 0; d < 256; ++d) {
/ r = d;
/ for (i = 0; i < 8; ++i) {
/ r = r >> 1 ^ (r & 1 ? polynomial : 0);
/ }
/ table[d] = r;
/ }
/ }
/
/ @param rdi is pointer to uint32_t[256] array
/ @param esi 32-bit binary polynomial config
/ @note imposes ~300ns one-time cost
// Generates lookup table for computing CRC-32 byte-by-byte.
//
// void crc32init(uint32_t table[256], uint32_t polynomial) {
// uint32_t d, i, r;
// for (d = 0; d < 256; ++d) {
// r = d;
// for (i = 0; i < 8; ++i) {
// r = r >> 1 ^ (r & 1 ? polynomial : 0);
// }
// table[d] = r;
// }
// }
//
// @param rdi is pointer to uint32_t[256] array
// @param esi 32-bit binary polynomial config
// @note imposes ~300ns one-time cost
crc32init:
push %rbp
mov %rsp,%rbp