gnu-efi/apps/setjmp.c
Nigel Croxon dae0b4b0b0 Turns out we actually need setjmp in one of gnu-efi's prominent
users, and it seems to make more sense to put it here than in
the application.

All of these are derived from the Tiano code, but I re-wrote the
x86_64 one because we use the ELF psABI calling conventions instead
of the MS ABI calling conventions.  Which is to say you probably
shouldn't setjmp()/longjmp() between functions with EFIAPI (aka
__attribute__((ms_abi))) and those without.

Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Nigel Croxon <nigel.croxon@hp.com>
2015-05-14 12:20:51 -04:00

32 lines
406 B
C

#include <efi.h>
#include <efilib.h>
EFI_STATUS
efi_main(
EFI_HANDLE image_handle,
EFI_SYSTEM_TABLE *systab
)
{
jmp_buf env;
int rc;
InitializeLib(image_handle, systab);
rc = setjmp(&env);
Print(L"setjmp() = %d\n", rc);
if (rc == 3) {
Print(L"3 worked\n");
longjmp(&env, 0);
return 0;
}
if (rc == 1) {
Print(L"0 got to be one yay\n");
return 0;
}
longjmp(&env, 3);
return 0;
}