cosmopolitan/libc/nexgen32e/trampoline.h
Justine Tunney ea0b5d9d1c Get Cosmopolitan into releasable state
A new rollup tool now exists for flattening out the headers in a way
that works better for our purposes than cpp. A lot of the API clutter
has been removed. APIs that aren't a sure thing in terms of general
recommendation are now marked internal.

There's now a smoke test for the amalgamation archive and gigantic
header file. So we can now guarantee you can use this project on the
easiest difficulty setting without the gigantic repository.

A website is being created, which is currently a work in progress:
https://justine.storage.googleapis.com/cosmopolitan/index.html
2020-11-25 08:19:00 -08:00

20 lines
775 B
C

#ifndef COSMOPOLITAN_LIBC_NEXGEN32E_TRAMPOLINE_H_
#define COSMOPOLITAN_LIBC_NEXGEN32E_TRAMPOLINE_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
#define TRAMPOLINE(FUNCTION, THUNK) \
({ \
typeof(FUNCTION) *Tramp; \
asm(".pushsection .text.trampoline\n" \
"183:\n\t" \
"mov\t%1,%%eax\n\t" \
"jmp\t" #THUNK "\n\t" \
".popsection\n\t" \
"mov\t$183b,%k0" \
: "=r"(Tramp) \
: "i"(FUNCTION)); \
Tramp; \
})
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_NEXGEN32E_TRAMPOLINE_H_ */