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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/mem/malloc_usable_size.S
View File

@@ -20,22 +20,22 @@
#include "libc/notice.inc"
.source __FILE__
/ Returns the number of bytes you can actually use in
/ an allocated chunk, which may be more than you requested
/ (although often not) due to alignment and minimum size
/ constraints.
/
/ You can use this many bytes without worrying about overwriting
/ other allocated objects. This is not a particularly great
/ programming practice. malloc_usable_size can be more useful in
/ debugging and assertions, for example:
/
/ p = malloc(n)
/ assert(malloc_usable_size(p) >= 256)
/
/ @param rdi is address of allocation
/ @return rax is total number of bytes
/ @see dlmalloc_usable_size()
// Returns the number of bytes you can actually use in
// an allocated chunk, which may be more than you requested
// (although often not) due to alignment and minimum size
// constraints.
//
// You can use this many bytes without worrying about overwriting
// other allocated objects. This is not a particularly great
// programming practice. malloc_usable_size can be more useful in
// debugging and assertions, for example:
//
// p = malloc(n)
// assert(malloc_usable_size(p) >= 256)
//
// @param rdi is address of allocation
// @return rax is total number of bytes
// @see dlmalloc_usable_size()
malloc_usable_size:
jmp *hook_malloc_usable_size(%rip)
.endfn malloc_usable_size,globl