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Allow iris to have its version of the trampoline code.

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From-SVN: r4162
This commit is contained in:
Michael Meissner 1993-04-16 20:37:41 +00:00
parent 8a18e16fa6
commit 2def788831
1 changed files with 31 additions and 0 deletions
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31
gcc/config/mips/iris3.h
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@ -96,4 +96,35 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Plain char is unsigned in the SGI compiler. */
#define DEFAULT_SIGNED_CHAR 0
/* A C statement to initialize the variable parts of a trampoline.
ADDR is an RTX for the address of the trampoline; FNADDR is an
RTX for the address of the nested function; STATIC_CHAIN is an
RTX for the static chain value that should be passed to the
function when it is called.
Silicon Graphics machines are supposed to not have a mprotect
function to enable execute protection, but the stack already
has execute protection turned on. Because the MIPS chips have
no method to flush the icache without a system call, this can lose
if the same address is used for multiple trampolines. */
#define INITIALIZE_TRAMPOLINE(ADDR, FUNC, CHAIN) \
{ \
rtx addr = ADDR; \
emit_move_insn (gen_rtx (MEM, SImode, plus_constant (addr, 28)), FUNC); \
emit_move_insn (gen_rtx (MEM, SImode, plus_constant (addr, 32)), CHAIN); \
}
/* Attempt to turn on access permissions for the stack. */
#define TRANSFER_FROM_TRAMPOLINE \
\
void \
__enable_execute_stack (addr) \
char *addr; \
{ \
}
#include "mips/mips.h"