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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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34
libc/mem/malloc.S
View File

@ -19,22 +19,22 @@
#include "libc/macros.h"
.source __FILE__
/ Allocates uninitialized memory.
/
/ Returns a pointer to a newly allocated chunk of at least n bytes, or
/ null if no space is available, in which case errno is set to ENOMEM
/ on ANSI C systems.
/
/ If n is zero, malloc returns a minimum-sized chunk. (The minimum size
/ is 32 bytes on 64bit systems.) Note that size_t is an unsigned type,
/ so calls with arguments that would be negative if signed are
/ interpreted as requests for huge amounts of space, which will often
/ fail. The maximum supported value of n differs across systems, but is
/ in all cases less than the maximum representable value of a size_t.
/
/ @param rdi is number of bytes needed
/ @return new memory, or NULL w/ errno
/ @note malloc(0) → malloc(32)
/ @see dlmalloc()
// Allocates uninitialized memory.
//
// Returns a pointer to a newly allocated chunk of at least n bytes, or
// null if no space is available, in which case errno is set to ENOMEM
// on ANSI C systems.
//
// If n is zero, malloc returns a minimum-sized chunk. (The minimum size
// is 32 bytes on 64bit systems.) Note that size_t is an unsigned type,
// so calls with arguments that would be negative if signed are
// interpreted as requests for huge amounts of space, which will often
// fail. The maximum supported value of n differs across systems, but is
// in all cases less than the maximum representable value of a size_t.
//
// @param rdi is number of bytes needed
// @return new memory, or NULL w/ errno
// @note malloc(0) → malloc(32)
// @see dlmalloc()
malloc: jmp *hook_malloc(%rip)
.endfn malloc,globl