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arm: print information about loaded UEFI images

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If an exception occurs in a UEFI loaded image we need the start address of
the image to determine the relocation offset.

This patch adds the necessary lines after the registers in the crash dump
for armv8. A possible output would be:

UEFI image [0x00000000bffe6000:0x00000000bffe631f] pc=0x138 '/\snp.efi'

With the offset 0x138 we can now find the relevant instruction in the
disassembled 'snp.efi' binary.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2019-04-04 22:06:25 +02:00
parent e7ac009b00
commit bba8165690
1 changed files with 13 additions and 0 deletions
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13
arch/arm/lib/interrupts_64.c
View file

@ -25,6 +25,11 @@ int disable_interrupts(void)
return 0;
}
static void show_efi_loaded_images(struct pt_regs *regs)
{
efi_print_image_infos((void *)regs->elr);
}
void show_regs(struct pt_regs *regs)
{
int i;
@ -49,6 +54,7 @@ void do_bad_sync(struct pt_regs *pt_regs, unsigned int esr)
efi_restore_gd();
printf("Bad mode in \"Synchronous Abort\" handler, esr 0x%08x\n", esr);
show_regs(pt_regs);
show_efi_loaded_images(pt_regs);
panic("Resetting CPU ...\n");
}
@ -60,6 +66,7 @@ void do_bad_irq(struct pt_regs *pt_regs, unsigned int esr)
efi_restore_gd();
printf("Bad mode in \"Irq\" handler, esr 0x%08x\n", esr);
show_regs(pt_regs);
show_efi_loaded_images(pt_regs);
panic("Resetting CPU ...\n");
}
@ -71,6 +78,7 @@ void do_bad_fiq(struct pt_regs *pt_regs, unsigned int esr)
efi_restore_gd();
printf("Bad mode in \"Fiq\" handler, esr 0x%08x\n", esr);
show_regs(pt_regs);
show_efi_loaded_images(pt_regs);
panic("Resetting CPU ...\n");
}
@ -82,6 +90,7 @@ void do_bad_error(struct pt_regs *pt_regs, unsigned int esr)
efi_restore_gd();
printf("Bad mode in \"Error\" handler, esr 0x%08x\n", esr);
show_regs(pt_regs);
show_efi_loaded_images(pt_regs);
panic("Resetting CPU ...\n");
}
@ -93,6 +102,7 @@ void do_sync(struct pt_regs *pt_regs, unsigned int esr)
efi_restore_gd();
printf("\"Synchronous Abort\" handler, esr 0x%08x\n", esr);
show_regs(pt_regs);
show_efi_loaded_images(pt_regs);
panic("Resetting CPU ...\n");
}
@ -104,6 +114,7 @@ void do_irq(struct pt_regs *pt_regs, unsigned int esr)
efi_restore_gd();
printf("\"Irq\" handler, esr 0x%08x\n", esr);
show_regs(pt_regs);
show_efi_loaded_images(pt_regs);
panic("Resetting CPU ...\n");
}
@ -115,6 +126,7 @@ void do_fiq(struct pt_regs *pt_regs, unsigned int esr)
efi_restore_gd();
printf("\"Fiq\" handler, esr 0x%08x\n", esr);
show_regs(pt_regs);
show_efi_loaded_images(pt_regs);
panic("Resetting CPU ...\n");
}
@ -129,5 +141,6 @@ void __weak do_error(struct pt_regs *pt_regs, unsigned int esr)
efi_restore_gd();
printf("\"Error\" handler, esr 0x%08x\n", esr);
show_regs(pt_regs);
show_efi_loaded_images(pt_regs);
panic("Resetting CPU ...\n");
}