| 1 |
/* |
| 2 |
* Copyright (c) 2004 Marcel Moolenaar |
| 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 |
* |
| 9 |
* 1. Redistributions of source code must retain the above copyright |
| 10 |
* notice, this list of conditions and the following disclaimer. |
| 11 |
* 2. Redistributions in binary form must reproduce the above copyright |
| 12 |
* notice, this list of conditions and the following disclaimer in the |
| 13 |
* documentation and/or other materials provided with the distribution. |
| 14 |
* |
| 15 |
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR |
| 16 |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 17 |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 18 |
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 19 |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 20 |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 21 |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 22 |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 23 |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 24 |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 25 |
*/ |
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|
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#include <sys/cdefs.h> |
| 28 |
__FBSDID("$FreeBSD: head/devel/gdb/files/kgdb/i386fbsd-kern.c 480613 2018-09-24 17:23:35Z jhb $"); |
| 29 |
|
| 30 |
#include "defs.h" |
| 31 |
#include "frame-unwind.h" |
| 32 |
#include "gdbcore.h" |
| 33 |
#include "inferior.h" |
| 34 |
#include "osabi.h" |
| 35 |
#include "regcache.h" |
| 36 |
#include "progspace.h" |
| 37 |
#include "solib.h" |
| 38 |
#include "trad-frame.h" |
| 39 |
#include "i386-tdep.h" |
| 40 |
|
| 41 |
#ifdef __i386__ |
| 42 |
#include <sys/proc.h> |
| 43 |
#include <machine/pcb.h> |
| 44 |
#include <machine/frame.h> |
| 45 |
#include <machine/segments.h> |
| 46 |
#include <machine/tss.h> |
| 47 |
#endif |
| 48 |
|
| 49 |
#include "kgdb.h" |
| 50 |
|
| 51 |
struct i386fbsd_info { |
| 52 |
int ofs_fix; |
| 53 |
}; |
| 54 |
|
| 55 |
/* Per-program-space data key. */ |
| 56 |
static const struct program_space_data *i386fbsd_pspace_data; |
| 57 |
|
| 58 |
static void |
| 59 |
i386fbsd_pspace_data_cleanup (struct program_space *pspace, void *arg) |
| 60 |
{ |
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struct i386fbsd_info *info = (struct i386fbsd_info *)arg; |
| 62 |
|
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xfree (info); |
| 64 |
} |
| 65 |
|
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/* Get the current i386fbsd data. If none is found yet, add it now. This |
| 67 |
function always returns a valid object. */ |
| 68 |
|
| 69 |
static struct i386fbsd_info * |
| 70 |
get_i386fbsd_info (void) |
| 71 |
{ |
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struct i386fbsd_info *info; |
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|
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info = (struct i386fbsd_info *) |
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program_space_data (current_program_space, i386fbsd_pspace_data); |
| 76 |
if (info != NULL) |
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return info; |
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|
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info = XCNEW (struct i386fbsd_info); |
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set_program_space_data (current_program_space, i386fbsd_pspace_data, info); |
| 81 |
|
| 82 |
/* |
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* In revision 1.117 of i386/i386/exception.S trap handlers |
| 84 |
* were changed to pass trapframes by reference rather than |
| 85 |
* by value. Detect this by seeing if the first instruction |
| 86 |
* at the 'calltrap' label is a "push %esp" which has the |
| 87 |
* opcode 0x54. |
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*/ |
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if (parse_and_eval_long("((char *)calltrap)[0]") == 0x54) |
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info->ofs_fix = 4; |
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else |
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info->ofs_fix = 0; |
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return info; |
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} |
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|
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/* |
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* Even though the pcb contains fields for the segment selectors, only |
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* %gs is updated on each context switch. The other selectors are |
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* saved in stoppcbs[], but we just hardcode their known values rather |
| 100 |
* than handling that special case. |
| 101 |
*/ |
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static const int i386fbsd_pcb_offset[] = { |
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-1, /* %eax */ |
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-1, /* %ecx */ |
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-1, /* %edx */ |
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4 * 4, /* %ebx */ |
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3 * 4, /* %esp */ |
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2 * 4, /* %ebp */ |
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1 * 4, /* %esi */ |
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0 * 4, /* %edi */ |
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5 * 4, /* %eip */ |
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-1, /* %eflags */ |
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-1, /* %cs */ |
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-1, /* %ss */ |
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-1, /* %ds */ |
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-1, /* %es */ |
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-1, /* %fs */ |
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-1, /* %gs */ |
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}; |
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|
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#define CODE_SEL (4 << 3) |
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#define DATA_SEL (5 << 3) |
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#define PRIV_SEL (1 << 3) |
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|
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static void |
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i386fbsd_supply_pcb(struct regcache *regcache, CORE_ADDR pcb_addr) |
| 127 |
{ |
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gdb_byte buf[4]; |
| 129 |
int i; |
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|
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memset(buf, 0, sizeof(buf)); |
| 132 |
|
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/* |
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* XXX The PCB may have been swapped out. Supply a dummy %eip value |
| 135 |
* so as to avoid triggering an exception during stack unwinding. |
| 136 |
*/ |
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regcache->raw_supply(I386_EIP_REGNUM, buf); |
| 138 |
for (i = 0; i < ARRAY_SIZE (i386fbsd_pcb_offset); i++) |
| 139 |
if (i386fbsd_pcb_offset[i] != -1) { |
| 140 |
if (target_read_memory(pcb_addr + i386fbsd_pcb_offset[i], buf, sizeof buf) |
| 141 |
!= 0) |
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continue; |
| 143 |
regcache->raw_supply(i, buf); |
| 144 |
} |
| 145 |
regcache->raw_supply_unsigned(I386_CS_REGNUM, CODE_SEL); |
| 146 |
regcache->raw_supply_unsigned(I386_DS_REGNUM, DATA_SEL); |
| 147 |
regcache->raw_supply_unsigned(I386_ES_REGNUM, DATA_SEL); |
| 148 |
regcache->raw_supply_unsigned(I386_FS_REGNUM, PRIV_SEL); |
| 149 |
regcache->raw_supply_unsigned(I386_GS_REGNUM, DATA_SEL); |
| 150 |
regcache->raw_supply_unsigned(I386_SS_REGNUM, DATA_SEL); |
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} |
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|
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#ifdef __i386__ |
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/* TODO: Make this cross-debugger friendly. */ |
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static const int i386fbsd_tss_offset[] = { |
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10 * 4, /* %eax */ |
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11 * 4, /* %ecx */ |
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12 * 4, /* %edx */ |
| 159 |
13 * 4, /* %ebx */ |
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14 * 4, /* %esp */ |
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15 * 4, /* %ebp */ |
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16 * 4, /* %esi */ |
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17 * 4, /* %edi */ |
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8 * 4, /* %eip */ |
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9 * 4, /* %eflags */ |
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19 * 4, /* %cs */ |
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20 * 4, /* %ss */ |
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21 * 4, /* %ds */ |
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18 * 4, /* %es */ |
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22 * 4, /* %fs */ |
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23 * 4, /* %gs */ |
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}; |
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|
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/* |
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* If the current thread is executing on a CPU, fetch the common_tss |
| 176 |
* for that CPU. |
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* |
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* This is painful because 'struct pcpu' is variant sized, so we can't |
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* use it. Instead, we lookup the GDT selector for this CPU and |
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* extract the base of the TSS from there. |
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*/ |
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static CORE_ADDR |
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i386fbsd_fetch_tss(void) |
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{ |
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struct kthr *kt; |
| 186 |
struct segment_descriptor sd; |
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CORE_ADDR addr, cpu0prvpage, tss; |
| 188 |
|
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kt = kgdb_thr_lookup_tid(inferior_ptid.tid()); |
| 190 |
if (kt == NULL || kt->cpu == NOCPU || kt->cpu < 0) |
| 191 |
return (0); |
| 192 |
|
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addr = kgdb_lookup("gdt"); |
| 194 |
if (addr == 0) |
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return (0); |
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addr += (kt->cpu * NGDT + GPROC0_SEL) * sizeof(sd); |
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if (target_read_memory(addr, (gdb_byte *)&sd, sizeof(sd)) != 0) |
| 198 |
return (0); |
| 199 |
if (sd.sd_type != SDT_SYS386BSY) { |
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warning ("descriptor is not a busy TSS"); |
| 201 |
return (0); |
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} |
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tss = sd.sd_hibase << 24 | sd.sd_lobase; |
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|
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/* |
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* In SMP kernels, the TSS is stored as part of the per-CPU |
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* data. On older kernels, the CPU0's private page |
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* is stored at an address that isn't mapped in minidumps. |
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* However, the data is mapped at the alternate cpu0prvpage |
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* address. Thus, if the TSS is at the invalid address, |
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* change it to be relative to cpu0prvpage instead. |
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*/ |
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if (trunc_page(tss) == 0xffc00000) { |
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TRY { |
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cpu0prvpage = parse_and_eval_address("cpu0prvpage"); |
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} CATCH(e, RETURN_MASK_ERROR) { |
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return (0); |
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} END_CATCH |
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tss = cpu0prvpage + (tss & PAGE_MASK); |
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} |
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return (tss); |
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} |
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|
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static struct trad_frame_cache * |
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i386fbsd_dblfault_cache (struct frame_info *this_frame, void **this_cache) |
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{ |
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struct gdbarch *gdbarch = get_frame_arch (this_frame); |
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enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
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struct trad_frame_cache *cache; |
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CORE_ADDR addr, func, tss; |
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int i; |
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|
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if (*this_cache != NULL) |
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return (struct trad_frame_cache *)(*this_cache); |
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|
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cache = trad_frame_cache_zalloc (this_frame); |
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*this_cache = cache; |
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|
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func = get_frame_func (this_frame); |
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tss = i386fbsd_fetch_tss (); |
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|
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for (i = 0; i < ARRAY_SIZE (i386fbsd_tss_offset); i++) |
| 243 |
if (i386fbsd_tss_offset[i] != -1) |
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trad_frame_set_reg_addr (cache, i, tss + i386fbsd_tss_offset[i]); |
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|
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/* Construct the frame ID using the function start. */ |
| 247 |
/* XXX: Stack address should be dbfault_stack + PAGE_SIZE. */ |
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trad_frame_set_id (cache, frame_id_build (tss + sizeof(struct i386tss), |
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func)); |
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|
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return cache; |
| 252 |
} |
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|
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static void |
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i386fbsd_dblfault_this_id (struct frame_info *this_frame, |
| 256 |
void **this_cache, struct frame_id *this_id) |
| 257 |
{ |
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struct trad_frame_cache *cache = |
| 259 |
i386fbsd_dblfault_cache (this_frame, this_cache); |
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|
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trad_frame_get_id (cache, this_id); |
| 262 |
} |
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|
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static struct value * |
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i386fbsd_dblfault_prev_register (struct frame_info *this_frame, |
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void **this_cache, int regnum) |
| 267 |
{ |
| 268 |
struct trad_frame_cache *cache = |
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i386fbsd_dblfault_cache (this_frame, this_cache); |
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|
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return trad_frame_get_register (cache, this_frame, regnum); |
| 272 |
} |
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|
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static int |
| 275 |
i386fbsd_dblfault_sniffer (const struct frame_unwind *self, |
| 276 |
struct frame_info *this_frame, |
| 277 |
void **this_prologue_cache) |
| 278 |
{ |
| 279 |
const char *name; |
| 280 |
|
| 281 |
find_pc_partial_function (get_frame_func (this_frame), &name, NULL, NULL); |
| 282 |
return (name && strcmp (name, "dblfault_handler") == 0); |
| 283 |
} |
| 284 |
|
| 285 |
static const struct frame_unwind i386fbsd_dblfault_unwind = { |
| 286 |
SIGTRAMP_FRAME, |
| 287 |
default_frame_unwind_stop_reason, |
| 288 |
i386fbsd_dblfault_this_id, |
| 289 |
i386fbsd_dblfault_prev_register, |
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NULL, |
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i386fbsd_dblfault_sniffer |
| 292 |
}; |
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#endif |
| 294 |
|
| 295 |
static const int i386fbsd_trapframe_offset[] = { |
| 296 |
10 * 4, /* %eax */ |
| 297 |
9 * 4, /* %ecx */ |
| 298 |
8 * 4, /* %edx */ |
| 299 |
7 * 4, /* %ebx */ |
| 300 |
16 * 4, /* %esp */ |
| 301 |
5 * 4, /* %ebp */ |
| 302 |
4 * 4, /* %esi */ |
| 303 |
3 * 4, /* %edi */ |
| 304 |
13 * 4, /* %eip */ |
| 305 |
15 * 4, /* %eflags */ |
| 306 |
14 * 4, /* %cs */ |
| 307 |
17 * 4, /* %ss */ |
| 308 |
2 * 4, /* %ds */ |
| 309 |
1 * 4, /* %es */ |
| 310 |
0 * 4, /* %fs */ |
| 311 |
-1 /* %gs */ |
| 312 |
}; |
| 313 |
|
| 314 |
#define TRAPFRAME_SIZE 72 |
| 315 |
|
| 316 |
static struct trad_frame_cache * |
| 317 |
i386fbsd_trapframe_cache (struct frame_info *this_frame, void **this_cache) |
| 318 |
{ |
| 319 |
struct gdbarch *gdbarch = get_frame_arch (this_frame); |
| 320 |
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 321 |
struct trad_frame_cache *cache; |
| 322 |
struct i386fbsd_info *info; |
| 323 |
CORE_ADDR addr, cs, func, pc, sp; |
| 324 |
const char *name; |
| 325 |
int i; |
| 326 |
|
| 327 |
if (*this_cache != NULL) |
| 328 |
return ((struct trad_frame_cache *)*this_cache); |
| 329 |
|
| 330 |
info = get_i386fbsd_info(); |
| 331 |
cache = trad_frame_cache_zalloc (this_frame); |
| 332 |
*this_cache = cache; |
| 333 |
|
| 334 |
func = get_frame_func (this_frame); |
| 335 |
sp = get_frame_register_unsigned (this_frame, I386_ESP_REGNUM); |
| 336 |
|
| 337 |
find_pc_partial_function (func, &name, NULL, NULL); |
| 338 |
if (strcmp(name, "calltrap") == 0 || |
| 339 |
strcmp(name, "Xlcall_syscall") == 0 || |
| 340 |
strcmp(name, "Xint0x80_syscall") == 0) |
| 341 |
/* Traps in later kernels pass the trap frame by reference. */ |
| 342 |
sp += info->ofs_fix; |
| 343 |
else if (strcmp(name, "Xtimerint") == 0) |
| 344 |
/* Timer interrupts also pass the trap frame by reference. */ |
| 345 |
sp += info->ofs_fix; |
| 346 |
else if (strcmp(name, "Xcpustop") == 0 || |
| 347 |
strcmp(name, "Xrendezvous") == 0 || |
| 348 |
strcmp(name, "Xipi_intr_bitmap_handler") == 0 || |
| 349 |
strcmp(name, "Xlazypmap") == 0) |
| 350 |
/* These handlers push a trap frame only. */ |
| 351 |
; |
| 352 |
else if (strcmp(name, "fork_trampoline") == 0) |
| 353 |
if (get_frame_pc (this_frame) == func) |
| 354 |
{ |
| 355 |
/* fork_exit hasn't been called (kthread has never run), so |
| 356 |
%esp in the pcb points to the word above the trapframe. */ |
| 357 |
sp += 4; |
| 358 |
} |
| 359 |
else |
| 360 |
{ |
| 361 |
/* fork_exit has been called, so %esp in fork_exit's |
| 362 |
frame is &tf - 12. */ |
| 363 |
sp += 12; |
| 364 |
} |
| 365 |
else { |
| 366 |
/* Interrupt frames pass the IDT vector in addition to the trap frame. */ |
| 367 |
sp += info->ofs_fix + 4; |
| 368 |
} |
| 369 |
|
| 370 |
addr = sp + i386fbsd_trapframe_offset[I386_CS_REGNUM]; |
| 371 |
cs = read_memory_unsigned_integer (addr, 4, byte_order); |
| 372 |
for (i = 0; i < ARRAY_SIZE (i386fbsd_trapframe_offset); i++) |
| 373 |
{ |
| 374 |
/* %ss/%esp are only present in the trapframe for a trap from |
| 375 |
userland. */ |
| 376 |
if ((cs & I386_SEL_RPL) == I386_SEL_KPL) |
| 377 |
{ |
| 378 |
if (i == I386_SS_REGNUM) |
| 379 |
continue; |
| 380 |
if (i == I386_ESP_REGNUM) |
| 381 |
{ |
| 382 |
trad_frame_set_reg_value (cache, i, sp + TRAPFRAME_SIZE - 8); |
| 383 |
continue; |
| 384 |
} |
| 385 |
} |
| 386 |
if (i386fbsd_trapframe_offset[i] != -1) |
| 387 |
trad_frame_set_reg_addr (cache, i, sp + i386fbsd_trapframe_offset[i]); |
| 388 |
} |
| 389 |
|
| 390 |
/* Read %eip from trap frame. */ |
| 391 |
addr = sp + i386fbsd_trapframe_offset[I386_EIP_REGNUM]; |
| 392 |
pc = read_memory_unsigned_integer (addr, 4, byte_order); |
| 393 |
|
| 394 |
if (pc == 0 && strcmp(name, "fork_trampoline") == 0) |
| 395 |
{ |
| 396 |
/* Initial frame of a kthread; terminate backtrace. */ |
| 397 |
trad_frame_set_id (cache, outer_frame_id); |
| 398 |
} |
| 399 |
else |
| 400 |
{ |
| 401 |
/* Construct the frame ID using the function start. */ |
| 402 |
sp += TRAPFRAME_SIZE; |
| 403 |
if ((cs & I386_SEL_RPL) == I386_SEL_KPL) |
| 404 |
sp -= 8; |
| 405 |
trad_frame_set_id (cache, frame_id_build (sp, func)); |
| 406 |
} |
| 407 |
|
| 408 |
return cache; |
| 409 |
} |
| 410 |
|
| 411 |
static void |
| 412 |
i386fbsd_trapframe_this_id (struct frame_info *this_frame, |
| 413 |
void **this_cache, struct frame_id *this_id) |
| 414 |
{ |
| 415 |
struct trad_frame_cache *cache = |
| 416 |
i386fbsd_trapframe_cache (this_frame, this_cache); |
| 417 |
|
| 418 |
trad_frame_get_id (cache, this_id); |
| 419 |
} |
| 420 |
|
| 421 |
static struct value * |
| 422 |
i386fbsd_trapframe_prev_register (struct frame_info *this_frame, |
| 423 |
void **this_cache, int regnum) |
| 424 |
{ |
| 425 |
struct trad_frame_cache *cache = |
| 426 |
i386fbsd_trapframe_cache (this_frame, this_cache); |
| 427 |
|
| 428 |
return trad_frame_get_register (cache, this_frame, regnum); |
| 429 |
} |
| 430 |
|
| 431 |
static int |
| 432 |
i386fbsd_trapframe_sniffer (const struct frame_unwind *self, |
| 433 |
struct frame_info *this_frame, |
| 434 |
void **this_prologue_cache) |
| 435 |
{ |
| 436 |
const char *name; |
| 437 |
|
| 438 |
find_pc_partial_function (get_frame_func (this_frame), &name, NULL, NULL); |
| 439 |
return (name && ((strcmp (name, "calltrap") == 0) |
| 440 |
|| (strcmp (name, "fork_trampoline") == 0) |
| 441 |
|| (name[0] == 'X' && name[1] != '_'))); |
| 442 |
} |
| 443 |
|
| 444 |
static const struct frame_unwind i386fbsd_trapframe_unwind = { |
| 445 |
SIGTRAMP_FRAME, |
| 446 |
default_frame_unwind_stop_reason, |
| 447 |
i386fbsd_trapframe_this_id, |
| 448 |
i386fbsd_trapframe_prev_register, |
| 449 |
NULL, |
| 450 |
i386fbsd_trapframe_sniffer |
| 451 |
}; |
| 452 |
|
| 453 |
static void |
| 454 |
i386fbsd_kernel_init_abi(struct gdbarch_info info, struct gdbarch *gdbarch) |
| 455 |
{ |
| 456 |
|
| 457 |
i386_elf_init_abi(info, gdbarch); |
| 458 |
|
| 459 |
#ifdef __i386__ |
| 460 |
frame_unwind_prepend_unwinder(gdbarch, &i386fbsd_dblfault_unwind); |
| 461 |
#endif |
| 462 |
frame_unwind_prepend_unwinder(gdbarch, &i386fbsd_trapframe_unwind); |
| 463 |
|
| 464 |
set_solib_ops(gdbarch, &kld_so_ops); |
| 465 |
|
| 466 |
fbsd_vmcore_set_supply_pcb(gdbarch, i386fbsd_supply_pcb); |
| 467 |
fbsd_vmcore_set_cpu_pcb_addr(gdbarch, kgdb_trgt_stop_pcb); |
| 468 |
} |
| 469 |
|
| 470 |
void |
| 471 |
_initialize_i386_kgdb_tdep(void) |
| 472 |
{ |
| 473 |
/* This is used for both i386 and amd64, but amd64 always |
| 474 |
includes this target, so just include it here. */ |
| 475 |
gdbarch_register_osabi_sniffer(bfd_arch_i386, |
| 476 |
bfd_target_elf_flavour, |
| 477 |
fbsd_kernel_osabi_sniffer); |
| 478 |
gdbarch_register_osabi (bfd_arch_i386, 0, |
| 479 |
GDB_OSABI_FREEBSD_KERNEL, i386fbsd_kernel_init_abi); |
| 480 |
|
| 481 |
i386fbsd_pspace_data = register_program_space_data_with_cleanup (NULL, |
| 482 |
i386fbsd_pspace_data_cleanup); |
| 483 |
|
| 484 |
#ifdef __i386__ |
| 485 |
/* |
| 486 |
* FreeBSD/i386 kernels prior to the introduction of AVX |
| 487 |
* support used a different layout for the PCB. If gdb is |
| 488 |
* compiled on these systems, these asserts will fail. The |
| 489 |
* package builders build packages on older systems which are |
| 490 |
* then run on newer systems. These binaries trip over these |
| 491 |
* assertions even when debugging user programs and even |
| 492 |
* though the running kernel is new enough. To cope, disable |
| 493 |
* the assertion checks unless gdb is built against a new |
| 494 |
* enough world. Note that this means kgdb is not going to |
| 495 |
* parse PCBs correctly on FreeBSD/i386 kernels before AVX was |
| 496 |
* merged. |
| 497 |
*/ |
| 498 |
#if __FreeBSD_version >= 1001505 |
| 499 |
gdb_assert(offsetof(struct pcb, pcb_ebx) |
| 500 |
== i386fbsd_pcb_offset[I386_EBX_REGNUM]); |
| 501 |
gdb_assert(offsetof(struct pcb, pcb_esp) |
| 502 |
== i386fbsd_pcb_offset[I386_ESP_REGNUM]); |
| 503 |
gdb_assert(offsetof(struct pcb, pcb_ebp) |
| 504 |
== i386fbsd_pcb_offset[I386_EBP_REGNUM]); |
| 505 |
gdb_assert(offsetof(struct pcb, pcb_esi) |
| 506 |
== i386fbsd_pcb_offset[I386_ESI_REGNUM]); |
| 507 |
gdb_assert(offsetof(struct pcb, pcb_edi) |
| 508 |
== i386fbsd_pcb_offset[I386_EDI_REGNUM]); |
| 509 |
gdb_assert(offsetof(struct pcb, pcb_eip) |
| 510 |
== i386fbsd_pcb_offset[I386_EIP_REGNUM]); |
| 511 |
#endif |
| 512 |
gdb_assert(CODE_SEL == GSEL(GCODE_SEL, SEL_KPL)); |
| 513 |
gdb_assert(DATA_SEL == GSEL(GDATA_SEL, SEL_KPL)); |
| 514 |
gdb_assert(PRIV_SEL == GSEL(GPRIV_SEL, SEL_KPL)); |
| 515 |
gdb_assert(sizeof(struct trapframe) == TRAPFRAME_SIZE); |
| 516 |
gdb_assert(offsetof(struct trapframe, tf_eax) |
| 517 |
== i386fbsd_trapframe_offset[I386_EAX_REGNUM]); |
| 518 |
gdb_assert(offsetof(struct trapframe, tf_ecx) |
| 519 |
== i386fbsd_trapframe_offset[I386_ECX_REGNUM]); |
| 520 |
gdb_assert(offsetof(struct trapframe, tf_edx) |
| 521 |
== i386fbsd_trapframe_offset[I386_EDX_REGNUM]); |
| 522 |
gdb_assert(offsetof(struct trapframe, tf_ebx) |
| 523 |
== i386fbsd_trapframe_offset[I386_EBX_REGNUM]); |
| 524 |
gdb_assert(offsetof(struct trapframe, tf_esp) |
| 525 |
== i386fbsd_trapframe_offset[I386_ESP_REGNUM]); |
| 526 |
gdb_assert(offsetof(struct trapframe, tf_ebp) |
| 527 |
== i386fbsd_trapframe_offset[I386_EBP_REGNUM]); |
| 528 |
gdb_assert(offsetof(struct trapframe, tf_esi) |
| 529 |
== i386fbsd_trapframe_offset[I386_ESI_REGNUM]); |
| 530 |
gdb_assert(offsetof(struct trapframe, tf_edi) |
| 531 |
== i386fbsd_trapframe_offset[I386_EDI_REGNUM]); |
| 532 |
gdb_assert(offsetof(struct trapframe, tf_eip) |
| 533 |
== i386fbsd_trapframe_offset[I386_EIP_REGNUM]); |
| 534 |
gdb_assert(offsetof(struct trapframe, tf_eflags) |
| 535 |
== i386fbsd_trapframe_offset[I386_EFLAGS_REGNUM]); |
| 536 |
gdb_assert(offsetof(struct trapframe, tf_cs) |
| 537 |
== i386fbsd_trapframe_offset[I386_CS_REGNUM]); |
| 538 |
gdb_assert(offsetof(struct trapframe, tf_ss) |
| 539 |
== i386fbsd_trapframe_offset[I386_SS_REGNUM]); |
| 540 |
gdb_assert(offsetof(struct trapframe, tf_ds) |
| 541 |
== i386fbsd_trapframe_offset[I386_DS_REGNUM]); |
| 542 |
gdb_assert(offsetof(struct trapframe, tf_es) |
| 543 |
== i386fbsd_trapframe_offset[I386_ES_REGNUM]); |
| 544 |
gdb_assert(offsetof(struct trapframe, tf_fs) |
| 545 |
== i386fbsd_trapframe_offset[I386_FS_REGNUM]); |
| 546 |
|
| 547 |
gdb_assert(offsetof(struct i386tss, tss_eax) |
| 548 |
== i386fbsd_tss_offset[I386_EAX_REGNUM]); |
| 549 |
gdb_assert(offsetof(struct i386tss, tss_ecx) |
| 550 |
== i386fbsd_tss_offset[I386_ECX_REGNUM]); |
| 551 |
gdb_assert(offsetof(struct i386tss, tss_edx) |
| 552 |
== i386fbsd_tss_offset[I386_EDX_REGNUM]); |
| 553 |
gdb_assert(offsetof(struct i386tss, tss_ebx) |
| 554 |
== i386fbsd_tss_offset[I386_EBX_REGNUM]); |
| 555 |
gdb_assert(offsetof(struct i386tss, tss_esp) |
| 556 |
== i386fbsd_tss_offset[I386_ESP_REGNUM]); |
| 557 |
gdb_assert(offsetof(struct i386tss, tss_ebp) |
| 558 |
== i386fbsd_tss_offset[I386_EBP_REGNUM]); |
| 559 |
gdb_assert(offsetof(struct i386tss, tss_esi) |
| 560 |
== i386fbsd_tss_offset[I386_ESI_REGNUM]); |
| 561 |
gdb_assert(offsetof(struct i386tss, tss_edi) |
| 562 |
== i386fbsd_tss_offset[I386_EDI_REGNUM]); |
| 563 |
gdb_assert(offsetof(struct i386tss, tss_eip) |
| 564 |
== i386fbsd_tss_offset[I386_EIP_REGNUM]); |
| 565 |
gdb_assert(offsetof(struct i386tss, tss_eflags) |
| 566 |
== i386fbsd_tss_offset[I386_EFLAGS_REGNUM]); |
| 567 |
gdb_assert(offsetof(struct i386tss, tss_cs) |
| 568 |
== i386fbsd_tss_offset[I386_CS_REGNUM]); |
| 569 |
gdb_assert(offsetof(struct i386tss, tss_ss) |
| 570 |
== i386fbsd_tss_offset[I386_SS_REGNUM]); |
| 571 |
gdb_assert(offsetof(struct i386tss, tss_ds) |
| 572 |
== i386fbsd_tss_offset[I386_DS_REGNUM]); |
| 573 |
gdb_assert(offsetof(struct i386tss, tss_es) |
| 574 |
== i386fbsd_tss_offset[I386_ES_REGNUM]); |
| 575 |
gdb_assert(offsetof(struct i386tss, tss_fs) |
| 576 |
== i386fbsd_tss_offset[I386_FS_REGNUM]); |
| 577 |
gdb_assert(offsetof(struct i386tss, tss_gs) |
| 578 |
== i386fbsd_tss_offset[I386_GS_REGNUM]); |
| 579 |
#endif |
| 580 |
} |
