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cosmopolitan/libc/runtime/ftrace-hook.S

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Get codebase completely working with LLVM 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.
2021-02-08 17:19:00 +00:00
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
│vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
Initial import
2020-06-15 14:18:57 +00:00
╞══════════════════════════════════════════════════════════════════════════════╡
Get codebase completely working with LLVM 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.
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
Initial import
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│ │
Change license
2020-12-28 01:18:44 +00:00
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
Initial import
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│ │
Change license
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
Initial import
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╚─────────────────────────────────────────────────────────────────────────────*/
Remove more nonstandard stuff from cosmopolitan.h Fixes #61
2021-03-01 07:42:35 +00:00
#include "libc/macros.internal.h"
Get codebase completely working with LLVM 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.
2021-02-08 17:19:00 +00:00
.privileged
Initial import
2020-06-15 14:18:57 +00:00
Get codebase completely working with LLVM 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.
2021-02-08 17:19:00 +00:00
ftrace_hook:
Get LIBC_RUNTIME and LIBC_CALLS building on aarch64
2023-05-09 08:56:56 +00:00
#ifdef __x86_64__
Make some systemic improvements - add vdso dump utility - tests now log stack usage - rename g_ftrace to __ftrace - make internal spinlocks go faster - add conformant c11 atomics library - function tracing now logs stack usage - make function call tracing thread safe - add -X unsecure (no ssl) mode to redbean - munmap() has more consistent behavior now - pacify fsync() calls on python unit tests - make --strace flag work better in redbean - start minimizing and documenting compiler flags
2022-05-18 23:41:29 +00:00
cmp $0,__ftrace(%rip)
Remove superfluous RET instructions
2023-06-07 02:46:56 +00:00
jle 1f
push %rbp
Get codebase completely working with LLVM 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.
2021-02-08 17:19:00 +00:00
mov %rsp,%rbp
push %rax
push %rax
push %rdi
push %rsi
push %rdx
push %rcx
push %r8
push %r9
Make SSL handshakes much faster This change boosts SSL handshake performance from 2,627 to ~10,000 per second which is the same level of performance as NGINX at establishing secure connections. That's impressive if we consider that redbean is a forking frontend application server. This was accomplished by: 1. Enabling either SSL session caching or SSL tickets. We choose to use tickets since they reduce network round trips too and that's a more important metric than wrk'ing localhost. 2. Fixing mbedtls_mpi_sub_abs() which is the most frequently called function. It's called about 12,000 times during an SSL handshake since it's the basis of most arithmetic operations like addition and for some strange reason it was designed to make two needless copies in addition to calling malloc and free. That's now fixed. 3. Improving TLS output buffering during the SSL handshake only, so that only a single is write and read system call is needed until blocking on the ping pong. redbean will now do a better job wiping sensitive memory from a child process as soon as it's not needed. The nice thing about fork is it's much faster than reverse proxying so the goal is to use the different address spaces along with setuid() to minimize the risk that a server key will be compromised in the event that application code is hacked.
2021-07-12 06:17:47 +00:00
call ftracer
Get codebase completely working with LLVM 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.
2021-02-08 17:19:00 +00:00
pop %r9
pop %r8
pop %rcx
pop %rdx
pop %rsi
pop %rdi
pop %rax
pop %rax
Simplify ftrace_hook() We now have a test to prove that its transitive closure doesn't perform floating point computations.
2023-06-06 18:10:38 +00:00
pop %rbp
Remove superfluous RET instructions
2023-06-07 02:46:56 +00:00
1: ret
Get LIBC_RUNTIME and LIBC_CALLS building on aarch64
2023-05-09 08:56:56 +00:00
#elif defined(__aarch64__)
Get --ftrace working on aarch64 This change implements a new approach to function call logging, that's based on the GCC flag: -fpatchable-function-entry. Read the commentary in build/config.mk to learn how it works.
2023-06-06 06:35:31 +00:00
adrp x9,__ftrace
ldr w9,[x9,#:lo12:__ftrace]
Remove superfluous RET instructions
2023-06-07 02:46:56 +00:00
cmp w9,0
ble 1f
stp x29,x30,[sp,-96]!
Get --ftrace working on aarch64 This change implements a new approach to function call logging, that's based on the GCC flag: -fpatchable-function-entry. Read the commentary in build/config.mk to learn how it works.
2023-06-06 06:35:31 +00:00
mov x29,sp
stp x0,x1,[sp,16]
stp x2,x3,[sp,32]
stp x4,x5,[sp,48]
stp x6,x7,[sp,64]
str x8,[sp,80]
Get LIBC_RUNTIME and LIBC_CALLS building on aarch64
2023-05-09 08:56:56 +00:00
bl ftracer
Get --ftrace working on aarch64 This change implements a new approach to function call logging, that's based on the GCC flag: -fpatchable-function-entry. Read the commentary in build/config.mk to learn how it works.
2023-06-06 06:35:31 +00:00
ldr x8,[sp,80]
ldp x6,x7,[sp,64]
ldp x4,x5,[sp,48]
ldp x2,x3,[sp,32]
ldp x0,x1,[sp,16]
ldp x29,x30,[sp],96
Remove superfluous RET instructions
2023-06-07 02:46:56 +00:00
1: ret
Get LIBC_RUNTIME and LIBC_CALLS building on aarch64
2023-05-09 08:56:56 +00:00
#endif /* __x86_64__ */
Get codebase completely working with LLVM 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.
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.endfn ftrace_hook,globl
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