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914f75de32
to add PPC64 LE support. The other two patches can be found in Bugzillas 334834 and 334836. The commit does not have a VEX commit associated with it. POWER PC, add initial Little Endian support The IBM POWER processor now supports both Big Endian and Little Endian. This patch renames the #defines with the name ppc64 to ppc64be for the BE specific code. This patch adds the Little Endian #define ppc64le to the Additionally, a few functions are renamed to remove BE from the name if the function is used by BE and LE. Functions that are BE specific have BE put in the name. The goals of this patch is to make sure #defines, function names and variables consistently use PPC64/ppc64 if it refers to BE and LE, PPC64BE/ppc64be if it is specific to BE, PPC64LE/ppc64le if it is LE specific. The patch does not break the code for PPC64 Big Endian. The test files memcheck/tests/atomic_incs.c, tests/power_insn_available.c and tests/power_insn_available.c are also updated to the new #define definition for PPC64 BE. Signed-off-by: Carl Love <carll@us.ibm.com> git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14238
93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
#include <stdio.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include <setjmp.h>
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typedef enum exit_codes_ {
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#if defined(VGA_ppc32) || defined(VGA_ppc64be) || defined(VGA_ppc64le)
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/* If the insn that got queried for: exists */
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POWER_INSN_AVAILABLE = 0,
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/* If the insn that got queried for: does not exist on this platform */
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POWER_INSN_UNAVAILABLE = 1,
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/* If the insn that got queried for: does not exist in the vocabulary of this program */
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POWER_INSN_UNRECOGNIZED = 2,
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/* Note: Please keep USAGE_ERROR last. */
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USAGE_ERROR
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#else
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/* When not on a POWER system: */
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NOT_POWER_ARCH = 255,
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#endif
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} exit_code;
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#if defined(VGA_ppc32) || defined(VGA_ppc64be) || defined(VGA_ppc64le)
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/* Signal Handling support for unsupported instructions. */
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static jmp_buf unsup_insn_env;
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static void unsup_insn_handler(int signal_number)
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{
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if (signal_number == SIGILL)
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longjmp(unsup_insn_env, 1);
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return;
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}
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static struct sigaction unsup_insn_action = (struct sigaction) {
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.sa_handler = &unsup_insn_handler,
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};
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/* Instruction existence tests. */
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static bool dcbzl_available(void)
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{
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#define MAX_DCBZL_SZB (128) /* largest known effect of dcbzl */
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char *test_block = NULL;
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register char *rb asm ("r14");
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int err;
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bool dcbzl_exists = false;
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err = posix_memalign ((void **)&test_block, MAX_DCBZL_SZB, 4 * MAX_DCBZL_SZB);
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if (err) {
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fprintf(stderr, "posix_memalign() failed (err = %d [%s])\n", err, strerror(err));
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return err;
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}
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rb = test_block;
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if (setjmp(unsup_insn_env) != 0)
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dcbzl_exists = false;
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else {
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sigaction(SIGILL, &unsup_insn_action, NULL);
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asm volatile ("dcbzl 0, %[RB]" : : [RB] "r" (rb));
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dcbzl_exists = true;
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}
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free(test_block);
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return dcbzl_exists;
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}
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#endif
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/* main() */
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int main(int argc, char **argv)
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{
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exit_code status;
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#if defined(VGA_ppc32) || defined(VGA_ppc64be) || defined(VGA_ppc64le)
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char *insn;
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if (argc != 2) {
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fprintf(stderr, "usage: power_insn_available <insn>\n" );
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exit(USAGE_ERROR);
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}
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insn = argv[1];
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if (strcmp (insn, "dcbzl") == 0)
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status = ((dcbzl_available ()) ? POWER_INSN_AVAILABLE : POWER_INSN_UNAVAILABLE);
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else
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/* power_insn_available has not been taught anything about this insn yet. */
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status = POWER_INSN_UNRECOGNIZED;
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#else
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status = NOT_POWER_ARCH;
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#endif
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return status;
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}
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