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This change progresses our AARCH64 support:

- The AARCH64 build and tests are now passing
- Add 128-bit floating-point support to printf()
- Fix clone() so it initializes cosmo's x28 TLS register
- Fix TLS memory layout issue with aarch64 _Alignas vars
- Revamp microbenchmarking tools so they work on aarch64
- Make some subtle improvements to aarch64 crash reporting
- Make kisdangerous() memory checks more accurate on aarch64
- Remove sys_open() since it's not available on Linux AARCH64

This change makes general improvements to Cosmo and Redbean:

- Introduce GetHostIsa() function in Redbean
- You can now feature check using pledge(0, 0)
- You can now feature check using unveil("",0)
- Refactor some more x86-specific asm comments
- Refactor and write docs for some libm functions
- Make the mmap() API behave more similar to Linux
- Fix WIFSIGNALED() which wrongly returned true for zero
- Rename some obscure cosmo keywords from noFOO to dontFOO
This commit is contained in:
Justine Tunney 2023-06-03 08:12:13 -07:00
parent 5655c9a4e7
commit 8f522cb702
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GPG key ID: BE714B4575D6E328
116 changed files with 1194 additions and 1025 deletions
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48
libc/testlib/bench.h
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@ -1,6 +1,5 @@
#ifndef COSMOPOLITAN_LIBC_BENCH_H_
#define COSMOPOLITAN_LIBC_BENCH_H_
#include "libc/intrin/safemacros.internal.h"
#include "libc/nexgen32e/bench.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
@ -9,22 +8,39 @@ COSMOPOLITAN_C_START_
* @fileoverview Microbenchmarking Toolz.
*/
#define BENCHLOOPER(START, STOP, N, EXPR) \
({ \
long Iter = 1; \
long Toto = (N); \
uint64_t Time1 = START(); \
asm volatile("" ::: "memory"); \
for (; Iter < Toto; ++Iter) { \
asm volatile("" ::: "memory"); \
EXPR; \
asm volatile("" ::: "memory"); \
} \
asm volatile("" ::: "memory"); \
uint64_t Time2 = STOP(); \
(double)(long)(Time2 - Time1) / Iter; \
})
#ifndef BENCHLOOP
#define BENCHLOOP(START, STOP, N, INIT, EXPR) \
({ \
unsigned long Iter, Count; \
uint64_t Time1, Time2; \
double Average; \
for (Average = 1, Iter = 1, Count = (N); Iter < Count; ++Iter) { \
INIT; \
Time1 = START(); \
asm volatile("" ::: "memory"); \
EXPR; \
asm volatile("" ::: "memory"); \
Time2 = STOP(); \
Average += 1. / Iter * ((int)unsignedsubtract(Time2, Time1) - Average); \
} \
Average; \
/* TODO(jart): DELETE */
#define BENCHLOOP(START, STOP, N, INIT, EXPR) \
({ \
double Average; \
uint64_t Time1, Time2; \
unsigned long Iter, Count; \
for (Average = 1, Iter = 1, Count = (N); Iter < Count; ++Iter) { \
INIT; \
Time1 = START(); \
asm volatile("" ::: "memory"); \
EXPR; \
asm volatile("" ::: "memory"); \
Time2 = STOP(); \
Average += 1. / Iter * ((int)(Time2 - Time1) - Average); \
} \
Average; \
})
#endif /* BENCHLOOP */