| ia32_signal.c (119336) | ia32_signal.c (122292) |
|---|---|
| 1/*- 2 * Copyright (c) 2003 Peter Wemm 3 * Copyright (c) 1982, 1987, 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * William Jolitz. 8 * --- 22 unchanged lines hidden (view full) --- 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 */ 37 38#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2003 Peter Wemm 3 * Copyright (c) 1982, 1987, 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * William Jolitz. 8 * --- 22 unchanged lines hidden (view full) --- 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 */ 37 38#include <sys/cdefs.h> |
| 39__FBSDID("$FreeBSD: head/sys/amd64/ia32/ia32_signal.c 119336 2003-08-23 00:04:53Z peter $"); | 39__FBSDID("$FreeBSD: head/sys/amd64/ia32/ia32_signal.c 122292 2003-11-08 03:33:38Z peter $"); |
| 40 41#include "opt_compat.h" 42 43#include <sys/param.h> 44#include <sys/exec.h> 45#include <sys/fcntl.h> 46#include <sys/imgact.h> 47#include <sys/kernel.h> --- 55 unchanged lines hidden (view full) --- 103 * unportabilized using __attribute__((aligned(16))) like the 104 * declaration of struct savemm, and anyway, alignment doesn't work 105 * for auto variables since we don't use gcc's pessimal stack 106 * alignment. Work around this by abusing the spare fields after 107 * mcp->mc_fpstate. 108 * 109 * XXX unpessimize most cases by only aligning when fxsave might be 110 * called, although this requires knowing too much about | 40 41#include "opt_compat.h" 42 43#include <sys/param.h> 44#include <sys/exec.h> 45#include <sys/fcntl.h> 46#include <sys/imgact.h> 47#include <sys/kernel.h> --- 55 unchanged lines hidden (view full) --- 103 * unportabilized using __attribute__((aligned(16))) like the 104 * declaration of struct savemm, and anyway, alignment doesn't work 105 * for auto variables since we don't use gcc's pessimal stack 106 * alignment. Work around this by abusing the spare fields after 107 * mcp->mc_fpstate. 108 * 109 * XXX unpessimize most cases by only aligning when fxsave might be 110 * called, although this requires knowing too much about |
| 111 * npxgetregs()'s internals. | 111 * fpugetregs()'s internals. |
| 112 */ 113 addr = (struct savefpu *)&mcp->mc_fpstate; 114 if (td == PCPU_GET(fpcurthread) && ((uintptr_t)(void *)addr & 0xF)) { 115 do 116 addr = (void *)((char *)addr + 4); 117 while ((uintptr_t)(void *)addr & 0xF); 118 } | 112 */ 113 addr = (struct savefpu *)&mcp->mc_fpstate; 114 if (td == PCPU_GET(fpcurthread) && ((uintptr_t)(void *)addr & 0xF)) { 115 do 116 addr = (void *)((char *)addr + 4); 117 while ((uintptr_t)(void *)addr & 0xF); 118 } |
| 119 mcp->mc_ownedfp = npxgetregs(td, addr); | 119 mcp->mc_ownedfp = fpugetregs(td, addr); |
| 120 if (addr != (struct savefpu *)&mcp->mc_fpstate) { 121 bcopy(addr, &mcp->mc_fpstate, sizeof(mcp->mc_fpstate)); 122 bzero(&mcp->mc_spare2, sizeof(mcp->mc_spare2)); 123 } | 120 if (addr != (struct savefpu *)&mcp->mc_fpstate) { 121 bcopy(addr, &mcp->mc_fpstate, sizeof(mcp->mc_fpstate)); 122 bzero(&mcp->mc_spare2, sizeof(mcp->mc_spare2)); 123 } |
| 124 mcp->mc_fpformat = npxformat(); | 124 mcp->mc_fpformat = fpuformat(); |
| 125} 126 127static int 128ia32_set_fpcontext(struct thread *td, const struct ia32_mcontext *mcp) 129{ 130 struct savefpu *addr; 131 132 if (mcp->mc_fpformat == _MC_FPFMT_NODEV) --- 10 unchanged lines hidden (view full) --- 143 if (td == PCPU_GET(fpcurthread) && 144 ((uintptr_t)(void *)addr & 0xF)) { 145 do 146 addr = (void *)((char *)addr + 4); 147 while ((uintptr_t)(void *)addr & 0xF); 148 bcopy(&mcp->mc_fpstate, addr, sizeof(mcp->mc_fpstate)); 149 } 150 /* | 125} 126 127static int 128ia32_set_fpcontext(struct thread *td, const struct ia32_mcontext *mcp) 129{ 130 struct savefpu *addr; 131 132 if (mcp->mc_fpformat == _MC_FPFMT_NODEV) --- 10 unchanged lines hidden (view full) --- 143 if (td == PCPU_GET(fpcurthread) && 144 ((uintptr_t)(void *)addr & 0xF)) { 145 do 146 addr = (void *)((char *)addr + 4); 147 while ((uintptr_t)(void *)addr & 0xF); 148 bcopy(&mcp->mc_fpstate, addr, sizeof(mcp->mc_fpstate)); 149 } 150 /* |
| 151 * XXX we violate the dubious requirement that npxsetregs() | 151 * XXX we violate the dubious requirement that fpusetregs() |
| 152 * be called with interrupts disabled. 153 */ | 152 * be called with interrupts disabled. 153 */ |
| 154 npxsetregs(td, addr); | 154 fpusetregs(td, addr); |
| 155 /* 156 * Don't bother putting things back where they were in the 157 * misaligned case, since we know that the caller won't use 158 * them again. 159 */ 160 } else 161 return (EINVAL); 162 return (0); --- 398 unchanged lines hidden --- | 155 /* 156 * Don't bother putting things back where they were in the 157 * misaligned case, since we know that the caller won't use 158 * them again. 159 */ 160 } else 161 return (EINVAL); 162 return (0); --- 398 unchanged lines hidden --- |