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4c74403188
Change-Id: Iae65e95cfa0d92091b8b0a424ae36d88efa76aa9 Reviewed-on: https://review.haiku-os.org/c/buildtools/+/3020 Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
118 lines
3.2 KiB
C
118 lines
3.2 KiB
C
/* x86 calling conventions checking. */
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/*
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Copyright 2000, 2001, 2010 Free Software Foundation, Inc.
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This file is part of the GNU MP Library test suite.
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The GNU MP Library test suite is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 3 of the License,
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or (at your option) any later version.
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The GNU MP Library test suite is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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Public License for more details.
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You should have received a copy of the GNU General Public License along with
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the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */
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#include <stdio.h>
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#include "gmp-impl.h"
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#include "tests.h"
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/* Vector if constants and register values. We use one vector to allow access
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via a base pointer, very beneficial for the PIC-enabled amd64call.asm. */
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mp_limb_t calling_conventions_values[17] =
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{
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CNST_LIMB(0x12345678), /* want_ebx */
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CNST_LIMB(0x89ABCDEF), /* want_ebp */
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CNST_LIMB(0xDEADBEEF), /* want_esi */
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CNST_LIMB(0xFFEEDDCC), /* want_edi */
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CNST_LIMB(0xFEEDABBA), /* JUNK_EAX */
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CNST_LIMB(0xAB78DE89), /* JUNK_ECX */
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CNST_LIMB(0x12389018) /* JUNK_EDX */
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/* rest of array used for dynamic values. */
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};
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/* Index starts for various regions in above vector. */
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#define WANT 0
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#define JUNK 4
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#define SAVE 7
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#define RETADDR 11
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#define VAL 12
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#define EFLAGS 16
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/* values to check */
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct {
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unsigned control;
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unsigned status;
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unsigned tag;
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unsigned other[4];
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} calling_conventions_fenv;
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#ifdef __cplusplus
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}
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#endif
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/* expected values, as per x86call.asm */
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#define VALUE_EBX 0x01234567
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#define VALUE_ESI 0x89ABCDEF
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#define VALUE_EDI 0xFEDCBA98
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#define VALUE_EBP 0x76543210
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const char *regname[] = {"ebx", "ebp", "esi", "edi"};
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#define DIR_BIT(eflags) (((eflags) & (1<<10)) != 0)
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/* Return 1 if ok, 0 if not */
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int
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calling_conventions_check (void)
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{
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const char *header = "Violated calling conventions:\n";
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int ret = 1;
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int i;
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#define CHECK(callreg, regstr, value) \
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if (callreg != value) \
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{ \
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printf ("%s %s got 0x%08X want 0x%08X\n", \
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header, regstr, callreg, value); \
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header = ""; \
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ret = 0; \
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}
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for (i = 0; i < 4; i++)
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{
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CHECK (calling_conventions_values[VAL+i], regname[i], calling_conventions_values[WANT+i]);
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}
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if (DIR_BIT (calling_conventions_values[EFLAGS]) != 0)
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{
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printf ("%s eflags dir bit got %d want 0\n",
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header, DIR_BIT (calling_conventions_values[EFLAGS]));
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header = "";
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ret = 0;
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}
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if ((calling_conventions_fenv.tag & 0xFFFF) != 0xFFFF)
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{
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printf ("%s fpu tags got 0x%X want 0xFFFF\n",
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header, calling_conventions_fenv.tag & 0xFFFF);
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header = "";
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ret = 0;
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}
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return ret;
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}
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