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Link with uplink module

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The Clang-based `bcc32c.exe` expects AT&T syntax for inline assembly.
References:
 - http://docwiki.embarcadero.com/RADStudio/Sydney/en/Differences_Between_Clang-enhanced_C%2B%2B_Compilers_and_Previous-Generation_C%2B%2B_Compilers#Inline_Assembly
 - https://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html
 - https://sourceware.org/binutils/docs/as/i386_002dVariations.html

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/13540)
This commit is contained in:
Tanzinul Islam 2020-12-13 18:04:43 +00:00 • committed by Dmitry Belyavskiy
parent 491a1e3363
commit daf98015aa
4 changed files with 25 additions and 3 deletions
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6
ms/applink.c
View file

@ -38,6 +38,12 @@
# include <io.h>
# include <fcntl.h>
# ifdef __BORLANDC__
/* _lseek in <io.h> is a function-like macro so we can't take its address */
# undef _lseek
# define _lseek lseek
# endif
static void *app_stdin(void)
{
return stdin;

19
ms/uplink.c
View file

@ -99,14 +99,29 @@ void OPENSSL_Uplink(volatile void **table, int index)
table[index] = func;
}
#if defined(_MSC_VER) && defined(_M_IX86)
# define LAZY(i) \
#if (defined(_MSC_VER) || defined(__BORLANDC__)) && defined(_M_IX86)
# if defined(_MSC_VER)
# define LAZY(i) \
__declspec(naked) static void lazy##i (void) { \
_asm push i \
_asm push OFFSET OPENSSL_UplinkTable \
_asm call OPENSSL_Uplink \
_asm add esp,8 \
_asm jmp OPENSSL_UplinkTable+4*i }
# elif defined(__BORLANDC__) && defined(__clang__)
void *OPENSSL_UplinkTable[26]; /* C++Builder requires declaration before use */
# define LAZY(i) \
__declspec(naked) static void lazy##i (void) { \
__asm__("pushl $" #i "; " \
"pushl %0; " \
"call %P1; " \
"addl $8, %%esp; " \
"jmp *%2 " \
: /* no outputs */ \
: "i" (OPENSSL_UplinkTable), \
"i" (OPENSSL_Uplink), \
"m" (OPENSSL_UplinkTable[i])); }
# endif
# if APPLINK_MAX>25
# error "Add more stubs..."