| trap.c (306738) | trap.c (329114) |
|---|---|
| 1/*- 2 * Copyright (c) 2016 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Konstantin Belousov under sponsorship 6 * from the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 14 unchanged lines hidden (view full) --- 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2016 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Konstantin Belousov under sponsorship 6 * from the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 14 unchanged lines hidden (view full) --- 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#include <sys/cdefs.h> |
| 31__FBSDID("$FreeBSD: stable/11/sys/boot/efi/loader/arch/amd64/trap.c 306738 2016-10-05 22:04:22Z kib $"); | 31__FBSDID("$FreeBSD: stable/11/sys/boot/efi/loader/arch/amd64/trap.c 329114 2018-02-11 02:27:50Z kevans $"); |
| 32 33#include <stand.h> 34#include <string.h> 35#include <sys/param.h> 36#include <machine/cpufunc.h> 37#include <machine/psl.h> 38#include <machine/segments.h> 39#include <machine/frame.h> --- 39 unchanged lines hidden (view full) --- 79static struct region_descriptor fw_gdt; /* Descriptor of pristine GDT */ 80static EFI_PHYSICAL_ADDRESS loader_gdt_pa; /* Address of loader shadow GDT */ 81 82void report_exc(struct trapframe *tf); 83void 84report_exc(struct trapframe *tf) 85{ 86 | 32 33#include <stand.h> 34#include <string.h> 35#include <sys/param.h> 36#include <machine/cpufunc.h> 37#include <machine/psl.h> 38#include <machine/segments.h> 39#include <machine/frame.h> --- 39 unchanged lines hidden (view full) --- 79static struct region_descriptor fw_gdt; /* Descriptor of pristine GDT */ 80static EFI_PHYSICAL_ADDRESS loader_gdt_pa; /* Address of loader shadow GDT */ 81 82void report_exc(struct trapframe *tf); 83void 84report_exc(struct trapframe *tf) 85{ 86 |
| 87 /* XXX using printf */ | 87 /* 88 * printf() depends on loader runtime and UEFI firmware health 89 * to produce the console output, in case of exception, the 90 * loader or firmware runtime may fail to support the printf(). 91 */ |
| 88 printf("====================================================" 89 "============================\n"); 90 printf("Exception %u\n", tf->tf_trapno); 91 printf("ss 0x%04hx cs 0x%04hx ds 0x%04hx es 0x%04hx fs 0x%04hx " 92 "gs 0x%04hx\n", 93 (uint16_t)tf->tf_ss, (uint16_t)tf->tf_cs, (uint16_t)tf->tf_ds, 94 (uint16_t)tf->tf_es, (uint16_t)tf->tf_fs, (uint16_t)tf->tf_gs); 95 printf("err 0x%08x rfl 0x%08x addr 0x%016lx\n" --- 21 unchanged lines hidden (view full) --- 117 fw_idt_e = &((struct gate_descriptor *)fw_idt.rd_base)[idx]; 118 loader_idt_e = &((struct gate_descriptor *)loader_idt.rd_base)[idx]; 119 fw_intr_handlers[idx] = fw_idt_e->gd_looffset + 120 (fw_idt_e->gd_hioffset << 16); 121 intercepted[idx] = 1; 122 ist_use_table[fw_idt_e->gd_ist]++; 123 loader_idt_e->gd_looffset = my_handler; 124 loader_idt_e->gd_hioffset = my_handler >> 16; | 92 printf("====================================================" 93 "============================\n"); 94 printf("Exception %u\n", tf->tf_trapno); 95 printf("ss 0x%04hx cs 0x%04hx ds 0x%04hx es 0x%04hx fs 0x%04hx " 96 "gs 0x%04hx\n", 97 (uint16_t)tf->tf_ss, (uint16_t)tf->tf_cs, (uint16_t)tf->tf_ds, 98 (uint16_t)tf->tf_es, (uint16_t)tf->tf_fs, (uint16_t)tf->tf_gs); 99 printf("err 0x%08x rfl 0x%08x addr 0x%016lx\n" --- 21 unchanged lines hidden (view full) --- 121 fw_idt_e = &((struct gate_descriptor *)fw_idt.rd_base)[idx]; 122 loader_idt_e = &((struct gate_descriptor *)loader_idt.rd_base)[idx]; 123 fw_intr_handlers[idx] = fw_idt_e->gd_looffset + 124 (fw_idt_e->gd_hioffset << 16); 125 intercepted[idx] = 1; 126 ist_use_table[fw_idt_e->gd_ist]++; 127 loader_idt_e->gd_looffset = my_handler; 128 loader_idt_e->gd_hioffset = my_handler >> 16; |
| 125 loader_idt_e->gd_selector = fw_idt_e->gd_selector; /* XXX */ | 129 /* 130 * We reuse uefi selector for the code segment for the exception 131 * handler code, while the reason for the fault might be the 132 * corruption of that gdt entry. On the other hand, allocating 133 * our own descriptor might be not much better, if gdt is corrupted. 134 */ 135 loader_idt_e->gd_selector = fw_idt_e->gd_selector; |
| 126 loader_idt_e->gd_ist = 0; 127 loader_idt_e->gd_type = SDT_SYSIGT; 128 loader_idt_e->gd_dpl = 0; 129 loader_idt_e->gd_p = 1; 130 loader_idt_e->gd_xx = 0; 131 loader_idt_e->sd_xx1 = 0; 132} 133#define PREPARE_EXCEPTION(N) \ --- 265 unchanged lines hidden --- | 136 loader_idt_e->gd_ist = 0; 137 loader_idt_e->gd_type = SDT_SYSIGT; 138 loader_idt_e->gd_dpl = 0; 139 loader_idt_e->gd_p = 1; 140 loader_idt_e->gd_xx = 0; 141 loader_idt_e->sd_xx1 = 0; 142} 143#define PREPARE_EXCEPTION(N) \ --- 265 unchanged lines hidden --- |