ia32_signal.c (102808) | ia32_signal.c (115084) |
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1/*- 2 * Copyright (c) 2002 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * | 1/*- 2 * Copyright (c) 2002 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * |
26 * $FreeBSD: head/sys/ia64/ia32/ia32_signal.c 102808 2002-09-01 21:41:24Z jake $ | 26 * $FreeBSD: head/sys/ia64/ia32/ia32_signal.c 115084 2003-05-16 21:26:42Z marcel $ |
27 */ 28 29#define __ELF_WORD_SIZE 32 30 31#include <sys/param.h> 32#include <sys/exec.h> 33#include <sys/fcntl.h> 34#include <sys/imgact.h> --- 12 unchanged lines hidden (view full) --- 47#include <sys/stat.h> 48#include <sys/sx.h> 49#include <sys/syscall.h> 50#include <sys/sysctl.h> 51#include <sys/sysent.h> 52#include <sys/vnode.h> 53#include <sys/imgact_elf.h> 54 | 27 */ 28 29#define __ELF_WORD_SIZE 32 30 31#include <sys/param.h> 32#include <sys/exec.h> 33#include <sys/fcntl.h> 34#include <sys/imgact.h> --- 12 unchanged lines hidden (view full) --- 47#include <sys/stat.h> 48#include <sys/sx.h> 49#include <sys/syscall.h> 50#include <sys/sysctl.h> 51#include <sys/sysent.h> 52#include <sys/vnode.h> 53#include <sys/imgact_elf.h> 54 |
55#include <machine/frame.h> 56#include <machine/md_var.h> 57#include <machine/pcb.h> 58 |
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55#include <vm/vm.h> 56#include <vm/vm_kern.h> 57#include <vm/vm_param.h> 58#include <vm/pmap.h> 59#include <vm/vm_map.h> 60#include <vm/vm_object.h> 61#include <vm/vm_extern.h> 62 63#include <ia64/ia32/ia32_util.h> 64#include <i386/include/psl.h> 65#include <i386/include/segments.h> 66#include <i386/include/specialreg.h> | 59#include <vm/vm.h> 60#include <vm/vm_kern.h> 61#include <vm/vm_param.h> 62#include <vm/pmap.h> 63#include <vm/vm_map.h> 64#include <vm/vm_object.h> 65#include <vm/vm_extern.h> 66 67#include <ia64/ia32/ia32_util.h> 68#include <i386/include/psl.h> 69#include <i386/include/segments.h> 70#include <i386/include/specialreg.h> |
67#include <machine/frame.h> 68#include <machine/md_var.h> | |
69 70static register_t *ia32_copyout_strings(struct image_params *imgp); 71static void ia32_setregs(struct thread *td, u_long entry, u_long stack, 72 u_long ps_strings); 73 74extern struct sysent ia32_sysent[]; 75 76static char ia32_sigcode[] = { 77 0xff, 0x54, 0x24, 0x10, /* call *SIGF_HANDLER(%esp) */ 78 0x8d, 0x44, 0x24, 0x14, /* lea SIGF_UC(%esp),%eax */ 79 0x50, /* pushl %eax */ 80 0xf7, 0x40, 0x54, 0x00, 0x00, 0x02, 0x02, /* testl $PSL_VM,UC_EFLAGS(%eax) */ 81 0x75, 0x03, /* jne 9f */ 82 0x8e, 0x68, 0x14, /* movl UC_GS(%eax),%gs */ 83 0xb8, 0x57, 0x01, 0x00, 0x00, /* 9: movl $SYS_sigreturn,%eax */ 84 0x50, /* pushl %eax */ 85 0xcd, 0x80, /* int $0x80 */ 86 0xeb, 0xfe, /* 0: jmp 0b */ | 71 72static register_t *ia32_copyout_strings(struct image_params *imgp); 73static void ia32_setregs(struct thread *td, u_long entry, u_long stack, 74 u_long ps_strings); 75 76extern struct sysent ia32_sysent[]; 77 78static char ia32_sigcode[] = { 79 0xff, 0x54, 0x24, 0x10, /* call *SIGF_HANDLER(%esp) */ 80 0x8d, 0x44, 0x24, 0x14, /* lea SIGF_UC(%esp),%eax */ 81 0x50, /* pushl %eax */ 82 0xf7, 0x40, 0x54, 0x00, 0x00, 0x02, 0x02, /* testl $PSL_VM,UC_EFLAGS(%eax) */ 83 0x75, 0x03, /* jne 9f */ 84 0x8e, 0x68, 0x14, /* movl UC_GS(%eax),%gs */ 85 0xb8, 0x57, 0x01, 0x00, 0x00, /* 9: movl $SYS_sigreturn,%eax */ 86 0x50, /* pushl %eax */ 87 0xcd, 0x80, /* int $0x80 */ 88 0xeb, 0xfe, /* 0: jmp 0b */ |
87 0, 0, 0, 0 | 89 0 |
88}; | 90}; |
89static int ia32_szsigcode = sizeof(ia32_sigcode) & ~3; | 91static int ia32_szsigcode = sizeof(ia32_sigcode); |
90 91struct sysentvec ia32_freebsd_sysvec = { 92 SYS_MAXSYSCALL, 93 ia32_sysent, 94 0, 95 0, 96 NULL, 97 0, 98 NULL, 99 NULL, 100 elf32_freebsd_fixup, 101 sendsig, 102 ia32_sigcode, 103 &ia32_szsigcode, 104 NULL, 105 "FreeBSD ELF", 106 elf32_coredump, 107 NULL, | 92 93struct sysentvec ia32_freebsd_sysvec = { 94 SYS_MAXSYSCALL, 95 ia32_sysent, 96 0, 97 0, 98 NULL, 99 0, 100 NULL, 101 NULL, 102 elf32_freebsd_fixup, 103 sendsig, 104 ia32_sigcode, 105 &ia32_szsigcode, 106 NULL, 107 "FreeBSD ELF", 108 elf32_coredump, 109 NULL, |
108 MINSIGSTKSZ, 109 4096, | 110 IA32_MINSIGSTKSZ, 111 IA32_PAGE_SIZE, |
110 0, 111 IA32_USRSTACK, 112 IA32_USRSTACK, 113 IA32_PS_STRINGS, 114 VM_PROT_ALL, 115 ia32_copyout_strings, 116 ia32_setregs 117}; --- 22 unchanged lines hidden (view full) --- 140 int szsigcode; 141 142 /* 143 * Calculate string base and vector table pointers. 144 * Also deal with signal trampoline code for this exec type. 145 */ 146 arginfo = (struct ia32_ps_strings *)IA32_PS_STRINGS; 147 szsigcode = *(imgp->proc->p_sysent->sv_szsigcode); | 112 0, 113 IA32_USRSTACK, 114 IA32_USRSTACK, 115 IA32_PS_STRINGS, 116 VM_PROT_ALL, 117 ia32_copyout_strings, 118 ia32_setregs 119}; --- 22 unchanged lines hidden (view full) --- 142 int szsigcode; 143 144 /* 145 * Calculate string base and vector table pointers. 146 * Also deal with signal trampoline code for this exec type. 147 */ 148 arginfo = (struct ia32_ps_strings *)IA32_PS_STRINGS; 149 szsigcode = *(imgp->proc->p_sysent->sv_szsigcode); |
148 destp = (caddr_t)arginfo - szsigcode - SPARE_USRSPACE - 149 roundup((ARG_MAX - imgp->stringspace), sizeof(char *)); | 150 destp = (caddr_t)arginfo - szsigcode - IA32_USRSPACE - 151 roundup((ARG_MAX - imgp->stringspace), sizeof(char *)); |
150 151 /* 152 * install sigcode 153 */ 154 if (szsigcode) 155 copyout(imgp->proc->p_sysent->sv_sigcode, 156 ((caddr_t)arginfo - szsigcode), szsigcode); 157 --- 22 unchanged lines hidden (view full) --- 180 * the arg and env vector sets 181 */ 182 vectp = (u_int32_t *) 183 (destp - (imgp->argc + imgp->envc + 2) * sizeof(u_int32_t)); 184 185 /* 186 * vectp also becomes our initial stack base 187 */ | 152 153 /* 154 * install sigcode 155 */ 156 if (szsigcode) 157 copyout(imgp->proc->p_sysent->sv_sigcode, 158 ((caddr_t)arginfo - szsigcode), szsigcode); 159 --- 22 unchanged lines hidden (view full) --- 182 * the arg and env vector sets 183 */ 184 vectp = (u_int32_t *) 185 (destp - (imgp->argc + imgp->envc + 2) * sizeof(u_int32_t)); 186 187 /* 188 * vectp also becomes our initial stack base 189 */ |
190 vectp = (void*)((uintptr_t)vectp & ~15); |
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188 stack_base = vectp; 189 190 stringp = imgp->stringbase; 191 argc = imgp->argc; 192 envc = imgp->envc; 193 194 /* 195 * Copy out strings - arguments and environment. --- 36 unchanged lines hidden (view full) --- 232 suword32(vectp, 0); 233 234 return ((register_t *)stack_base); 235} 236 237static void 238ia32_setregs(struct thread *td, u_long entry, u_long stack, u_long ps_strings) 239{ | 191 stack_base = vectp; 192 193 stringp = imgp->stringbase; 194 argc = imgp->argc; 195 envc = imgp->envc; 196 197 /* 198 * Copy out strings - arguments and environment. --- 36 unchanged lines hidden (view full) --- 235 suword32(vectp, 0); 236 237 return ((register_t *)stack_base); 238} 239 240static void 241ia32_setregs(struct thread *td, u_long entry, u_long stack, u_long ps_strings) 242{ |
240 struct trapframe *frame = td->td_frame; | 243 struct trapframe *tf = td->td_frame; |
241 vm_offset_t gdt, ldt; 242 u_int64_t codesel, datasel, ldtsel; 243 u_int64_t codeseg, dataseg, gdtseg, ldtseg; 244 struct segment_descriptor desc; 245 struct vmspace *vmspace = td->td_proc->p_vmspace; 246 | 244 vm_offset_t gdt, ldt; 245 u_int64_t codesel, datasel, ldtsel; 246 u_int64_t codeseg, dataseg, gdtseg, ldtseg; 247 struct segment_descriptor desc; 248 struct vmspace *vmspace = td->td_proc->p_vmspace; 249 |
247 /* 248 * Make sure that we restore the entire trapframe after an 249 * execve. 250 */ 251 frame->tf_flags &= ~FRAME_SYSCALL; | 250 exec_setregs(td, entry, stack, ps_strings); |
252 | 251 |
253 bzero(frame->tf_r, sizeof(frame->tf_r)); 254 bzero(frame->tf_f, sizeof(frame->tf_f)); | 252 /* Non-syscall frames are cleared by exec_setregs() */ 253 if (tf->tf_flags & FRAME_SYSCALL) { 254 bzero(&tf->tf_scratch, sizeof(tf->tf_scratch)); 255 bzero(&tf->tf_scratch_fp, sizeof(tf->tf_scratch_fp)); 256 } else 257 tf->tf_special.ndirty = 0; |
255 | 258 |
256 frame->tf_cr_iip = entry; 257 frame->tf_cr_ipsr = (IA64_PSR_IC 258 | IA64_PSR_I 259 | IA64_PSR_IT 260 | IA64_PSR_DT 261 | IA64_PSR_RT 262 | IA64_PSR_DFH 263 | IA64_PSR_IS 264 | IA64_PSR_BN 265 | IA64_PSR_CPL_USER); 266 frame->tf_r[FRAME_R12] = stack; | 259 tf->tf_special.psr |= IA64_PSR_IS; 260 tf->tf_special.sp = stack; |
267 | 261 |
262 /* Point the RSE backstore to something harmless. */ 263 tf->tf_special.bspstore = (IA32_PS_STRINGS - ia32_szsigcode - 264 IA32_USRSPACE + 15) & ~15; 265 |
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268 codesel = LSEL(LUCODE_SEL, SEL_UPL); 269 datasel = LSEL(LUDATA_SEL, SEL_UPL); 270 ldtsel = GSEL(GLDT_SEL, SEL_UPL); 271 | 266 codesel = LSEL(LUCODE_SEL, SEL_UPL); 267 datasel = LSEL(LUDATA_SEL, SEL_UPL); 268 ldtsel = GSEL(GLDT_SEL, SEL_UPL); 269 |
272#if 1 273 frame->tf_r[FRAME_R16] = (datasel << 48) | (datasel << 32) 274 | (datasel << 16) | datasel; 275 frame->tf_r[FRAME_R17] = (ldtsel << 32) | (datasel << 16) | codesel; 276#else 277 frame->tf_r[FRAME_R16] = datasel; 278 frame->tf_r[FRAME_R17] = codesel; 279 frame->tf_r[FRAME_R18] = datasel; 280 frame->tf_r[FRAME_R19] = datasel; 281 frame->tf_r[FRAME_R20] = datasel; 282 frame->tf_r[FRAME_R21] = datasel; 283 frame->tf_r[FRAME_R22] = ldtsel; 284#endif | 270 /* Setup ia32 segment registers. */ 271 tf->tf_scratch.gr16 = (datasel << 48) | (datasel << 32) | 272 (datasel << 16) | datasel; 273 tf->tf_scratch.gr17 = (ldtsel << 32) | (datasel << 16) | codesel; |
285 286 /* 287 * Build the GDT and LDT. 288 */ 289 gdt = IA32_USRSTACK; | 274 275 /* 276 * Build the GDT and LDT. 277 */ 278 gdt = IA32_USRSTACK; |
290 vm_map_find(&vmspace->vm_map, 0, 0, 291 &gdt, PAGE_SIZE, 0, 292 VM_PROT_ALL, VM_PROT_ALL, 0); 293 ldt = gdt + 4096; | 279 vm_map_find(&vmspace->vm_map, 0, 0, &gdt, IA32_PAGE_SIZE << 1, 0, 280 VM_PROT_ALL, VM_PROT_ALL, 0); 281 ldt = gdt + IA32_PAGE_SIZE; |
294 295 desc.sd_lolimit = 8*NLDT-1; 296 desc.sd_lobase = ldt & 0xffffff; 297 desc.sd_type = SDT_SYSLDT; 298 desc.sd_dpl = SEL_UPL; 299 desc.sd_p = 1; 300 desc.sd_hilimit = 0; 301 desc.sd_def32 = 0; --- 23 unchanged lines hidden (view full) --- 325 + (1L << 63); /* page granularity */ 326 dataseg = 0 /* base */ 327 + (((IA32_USRSTACK >> 12) - 1) << 32) /* limit */ 328 + ((long)SDT_MEMRWA << 52) 329 + ((long)SEL_UPL << 57) 330 + (1L << 59) /* present */ 331 + (1L << 62) /* 32 bits */ 332 + (1L << 63); /* page granularity */ | 282 283 desc.sd_lolimit = 8*NLDT-1; 284 desc.sd_lobase = ldt & 0xffffff; 285 desc.sd_type = SDT_SYSLDT; 286 desc.sd_dpl = SEL_UPL; 287 desc.sd_p = 1; 288 desc.sd_hilimit = 0; 289 desc.sd_def32 = 0; --- 23 unchanged lines hidden (view full) --- 313 + (1L << 63); /* page granularity */ 314 dataseg = 0 /* base */ 315 + (((IA32_USRSTACK >> 12) - 1) << 32) /* limit */ 316 + ((long)SDT_MEMRWA << 52) 317 + ((long)SEL_UPL << 57) 318 + (1L << 59) /* present */ 319 + (1L << 62) /* 32 bits */ 320 + (1L << 63); /* page granularity */ |
333 ia64_set_csd(codeseg); 334 ia64_set_ssd(dataseg); 335 frame->tf_r[FRAME_R24] = dataseg; /* ESD */ 336 frame->tf_r[FRAME_R27] = dataseg; /* DSD */ 337 frame->tf_r[FRAME_R28] = dataseg; /* FSD */ 338 frame->tf_r[FRAME_R29] = dataseg; /* GSD */ | |
339 | 321 |
322 tf->tf_scratch.csd = codeseg; 323 tf->tf_scratch.ssd = dataseg; 324 tf->tf_scratch.gr24 = dataseg; /* ESD */ 325 tf->tf_scratch.gr27 = dataseg; /* DSD */ 326 tf->tf_scratch.gr28 = dataseg; /* FSD */ 327 tf->tf_scratch.gr29 = dataseg; /* GSD */ 328 |
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340 gdtseg = gdt /* base */ 341 + ((8L*NGDT - 1) << 32) /* limit */ 342 + ((long)SDT_SYSNULL << 52) 343 + ((long)SEL_UPL << 57) 344 + (1L << 59) /* present */ 345 + (0L << 62) /* 16 bits */ 346 + (0L << 63); /* byte granularity */ 347 ldtseg = ldt /* base */ 348 + ((8L*NLDT - 1) << 32) /* limit */ 349 + ((long)SDT_SYSLDT << 52) 350 + ((long)SEL_UPL << 57) 351 + (1L << 59) /* present */ 352 + (0L << 62) /* 16 bits */ 353 + (0L << 63); /* byte granularity */ | 329 gdtseg = gdt /* base */ 330 + ((8L*NGDT - 1) << 32) /* limit */ 331 + ((long)SDT_SYSNULL << 52) 332 + ((long)SEL_UPL << 57) 333 + (1L << 59) /* present */ 334 + (0L << 62) /* 16 bits */ 335 + (0L << 63); /* byte granularity */ 336 ldtseg = ldt /* base */ 337 + ((8L*NLDT - 1) << 32) /* limit */ 338 + ((long)SDT_SYSLDT << 52) 339 + ((long)SEL_UPL << 57) 340 + (1L << 59) /* present */ 341 + (0L << 62) /* 16 bits */ 342 + (0L << 63); /* byte granularity */ |
354 frame->tf_r[FRAME_R30] = ldtseg; /* LDTD */ 355 frame->tf_r[FRAME_R31] = gdtseg; /* GDTD */ | |
356 | 343 |
344 tf->tf_scratch.gr30 = ldtseg; /* LDTD */ 345 tf->tf_scratch.gr31 = gdtseg; /* GDTD */ 346 347 /* Set ia32 control registers on this processor. */ 348 ia64_set_cflg(CR0_PE | CR0_PG | ((long)(CR4_XMM | CR4_FXSR) << 32)); |
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357 ia64_set_eflag(PSL_USER); 358 359 /* PS_STRINGS value for BSD/OS binaries. It is 0 for non-BSD/OS. */ | 349 ia64_set_eflag(PSL_USER); 350 351 /* PS_STRINGS value for BSD/OS binaries. It is 0 for non-BSD/OS. */ |
360 frame->tf_r[FRAME_R11] = IA32_PS_STRINGS; | 352 tf->tf_scratch.gr11 = IA32_PS_STRINGS; |
361 362 /* 363 * XXX - Linux emulator 364 * Make sure sure edx is 0x0 on entry. Linux binaries depend 365 * on it. 366 */ 367 td->td_retval[1] = 0; 368} | 353 354 /* 355 * XXX - Linux emulator 356 * Make sure sure edx is 0x0 on entry. Linux binaries depend 357 * on it. 358 */ 359 td->td_retval[1] = 0; 360} |
361 362void 363ia32_restorectx(struct pcb *pcb) 364{ 365 366 ia64_set_cflg(pcb->pcb_ia32_cflg); 367 ia64_set_eflag(pcb->pcb_ia32_eflag); 368 ia64_set_fcr(pcb->pcb_ia32_fcr); 369 ia64_set_fdr(pcb->pcb_ia32_fdr); 370 ia64_set_fir(pcb->pcb_ia32_fir); 371 ia64_set_fsr(pcb->pcb_ia32_fsr); 372} 373 374void 375ia32_savectx(struct pcb *pcb) 376{ 377 378 pcb->pcb_ia32_cflg = ia64_get_cflg(); 379 pcb->pcb_ia32_eflag = ia64_get_eflag(); 380 pcb->pcb_ia32_fcr = ia64_get_fcr(); 381 pcb->pcb_ia32_fdr = ia64_get_fdr(); 382 pcb->pcb_ia32_fir = ia64_get_fir(); 383 pcb->pcb_ia32_fsr = ia64_get_fsr(); 384} |
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