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Improve signal handling and math

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- Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD
- Add tests confirming signals can edit CPU state
- Work towards supporting ZIP filesystem on bare metal
- Add more tinymath unit tests for POSIX conformance
- Add X87 and SSE status flags to crash report
- Fix some bugs in blinkenlights
- Fix llvm build breakage
This commit is contained in:
Justine Tunney 2021-02-25 18:30:17 -08:00
parent cdc54ea1fd
commit 40291c9db3
109 changed files with 2316 additions and 520 deletions
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4
libc/tinymath/log2l.S
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@ -17,15 +17,13 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/macros.h"
.source __FILE__
// Calculates log₂𝑥.
//
// @param 𝑥 is an 80-bit long double passed on stack in 16-bytes
// @return result in %st
// @see ilogbl()
log2l:
push %rbp
log2l: push %rbp
mov %rsp,%rbp
.profilable
fld1