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Do code cleanup use duff device linenoise i/o

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This commit is contained in:
Justine Tunney 2022-04-22 18:55:28 -07:00
parent 6ff46ca373
commit 2f56ebfe78
79 changed files with 1393 additions and 1484 deletions
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8
libc/runtime/ftracer.c
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@ -31,6 +31,7 @@
#include "libc/stdio/stdio.h"
#include "libc/sysv/consts/map.h"
#include "libc/sysv/consts/o.h"
#include "libc/time/clockstonanos.internal.h"
#pragma weak stderr
@ -89,7 +90,7 @@ privileged noinstrument noasan noubsan void ftracer(void) {
frame = frame->next;
if (frame->addr != g_lastaddr) {
kprintf("+ %*s%t %d\r\n", GetNestingLevel(frame) * 2, "", frame->addr,
(long)(unsignedsubtract(stamp, g_laststamp) / 3.3));
ClocksToNanos(stamp, g_laststamp));
g_laststamp = X86_HAVE(RDTSCP) ? rdtscp(0) : rdtsc();
g_lastaddr = frame->addr;
}
@ -97,14 +98,15 @@ privileged noinstrument noasan noubsan void ftracer(void) {
noreentry = 0;
}
textstartup void ftrace_install(void) {
textstartup int ftrace_install(void) {
if (GetSymbolTable()) {
g_lastaddr = -1;
g_laststamp = kStartTsc;
g_skew = GetNestingLevelImpl(__builtin_frame_address(0));
ftrace_enabled = 1;
__hook(ftrace_hook, GetSymbolTable());
return __hook(ftrace_hook, GetSymbolTable());
} else {
kprintf("error: --ftrace failed to open symbol table\r\n");
return -1;
}
}