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Remove IMAGE_BASE_VIRTUAL

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Justine Tunney 2023-09-12 01:21:36 -07:00
parent 8a0008d985
commit 20c77338e6
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GPG key ID: BE714B4575D6E328
65 changed files with 10 additions and 286 deletions
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9
libc/intrin/cxaatexit.internal.h
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@ -1,6 +1,5 @@
#ifndef COSMOPOLITAN_LIBC_RUNTIME_CXAATEXIT_H_
#define COSMOPOLITAN_LIBC_RUNTIME_CXAATEXIT_H_
#include "libc/intrin/nopl.internal.h"
#include "libc/stdio/stdio.h"
#include "libc/thread/tls.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
@ -24,14 +23,6 @@ void __cxa_lock(void);
void __cxa_unlock(void);
void __cxa_printexits(FILE *, void *);
#ifdef _NOPL0
#define __cxa_lock() _NOPL0("__threadcalls", __cxa_lock)
#define __cxa_unlock() _NOPL0("__threadcalls", __cxa_unlock)
#else
#define __cxa_lock() (__threaded ? __cxa_lock() : 0)
#define __cxa_unlock() (__threaded ? __cxa_unlock() : 0)
#endif
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_RUNTIME_CXAATEXIT_H_ */

77
libc/intrin/nopl.internal.h
View file

@ -1,77 +0,0 @@
#ifndef COSMOPOLITAN_LIBC_INTRIN_NOPL_H_
#define COSMOPOLITAN_LIBC_INTRIN_NOPL_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0) && defined(__x86_64__) && \
defined(__GNUC__) && !defined(__llvm__) && !defined(__chibicc__) && \
defined(__MNO_RED_ZONE__) && !defined(__STRICT_ANSI__)
/**
* @fileoverview Turns CALLs into NOPs that are fixupable at runtime.
*
* Things like lock/unlock function calls can take on average 100ms.
* Libc needs to use internal locking pervasively in order to support
* threads. So there's a lot of cost everywhere, even though most progs
* don't use threads. In ANSI mode we dispatching (__threaded && lock())
* to solve this problem, but if we write lock statements that way, it
* adds a lot of bloat to the functions that call locking routines. So
* what we do here is replace the CALL instruction with NOP, which keeps
* the code just as fast as inlining, while making code size 10x tinier.
*/
#define _NOPL_PROLOGUE(SECTION) \
".section \".sort.rodata." SECTION ".1" \
"\",\"aG\",@progbits,\"" SECTION "\",comdat\n\t" \
".balign\t4\n\t" \
".type\t\"" SECTION "_start\",@object\n\t" \
".globl\t\"" SECTION "_start\"\n\t" \
".equ\t\"" SECTION "_start\",.\n\t" \
".previous\n\t"
#define _NOPL_EPILOGUE(SECTION) \
".section \".sort.rodata." SECTION ".3" \
"\",\"aG\",@progbits,\"" SECTION "\",comdat\n\t" \
".balign\t4\n\t" \
".type\"" SECTION "_end\",@object\n\t" \
".globl\t\"" SECTION "_end\"\n\t" \
".equ\t\"" SECTION "_end\",.\n\t" \
".previous\n\t"
#define _NOPL0(SECTION, FUNC) __NOPL0(SECTION, FUNC, IMAGE_BASE_VIRTUAL)
#define __NOPL0(SECTION, FUNC, GARDEN) ___NOPL0(SECTION, FUNC, GARDEN)
#define ___NOPL0(SECTION, FUNC, GARDEN) \
({ \
asm volatile(_NOPL_PROLOGUE(SECTION) /* */ \
_NOPL_EPILOGUE(SECTION) /* */ \
".section \".sort.rodata." SECTION ".2\",\"a\",@progbits\n\t" \
".balign\t4\n\t" \
".long\t353f-" #GARDEN "\n\t" \
".previous\n353:\t" \
"nopl\t" #FUNC "(%%rip)" \
: /* no inputs */ \
: /* no outputs */ \
: "rax", "rdi", "rsi", "rdx", "rcx", "r8", "r9", "r10", \
"r11", "memory", "cc"); \
(void)0; \
})
#define _NOPL1(SECTION, FUNC, ARG) \
__NOPL1(SECTION, FUNC, ARG, IMAGE_BASE_VIRTUAL)
#define __NOPL1(SECTION, FUNC, ARG, GARDEN) ___NOPL1(SECTION, FUNC, ARG, GARDEN)
#define ___NOPL1(SECTION, FUNC, ARG, GARDEN) \
({ \
register autotype(ARG) __arg asm("rdi") = ARG; \
asm volatile(_NOPL_PROLOGUE(SECTION) /* */ \
_NOPL_EPILOGUE(SECTION) /* */ \
".section \".sort.rodata." SECTION ".2\",\"a\",@progbits\n\t" \
".balign\t4\n\t" \
".long\t353f-" #GARDEN "\n\t" \
".previous\n353:\t" \
"nopl\t" #FUNC "(%%rip)" \
: "+D"(__arg) \
: /* no inputs */ \
: "rax", "rsi", "rdx", "rcx", "r8", "r9", "r10", "r11", \
"memory", "cc"); \
(void)0; \
})
#endif /* !ASSEMBLER && !LINKER && GNUC && !CHIBICC && !LLVM && !ANSI */
#endif /* COSMOPOLITAN_LIBC_INTRIN_NOPL_H_ */