Differential D18365 Diff 51240 stand/uboot/lib/elf_freebsd.c

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stand/uboot/lib/elf_freebsd.c

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	#endif			#endif
	return (0);			return (0);
	}			}

	int			int
	__elfN(uboot_exec)(struct preloaded_file *fp)			__elfN(uboot_exec)(struct preloaded_file *fp)
	{			{
	struct file_metadata *fmp;			struct file_metadata *fmp;
	vm_offset_t mdp;			vm_offset_t mdp, dtbp;
	Elf_Ehdr *e;			Elf_Ehdr *e;
	int error;			int error;
	void (entry)(void );			void (entry)(void );

	if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)			if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
	return (EFTYPE);			return (EFTYPE);

	e = (Elf_Ehdr *)&fmp->md_data;			e = (Elf_Ehdr *)&fmp->md_data;

	if ((error = md_load(fp->f_args, &mdp, NULL)) != 0)			if ((error = md_load(fp->f_args, &mdp, &dtbp)) != 0)
	return (error);			return (error);

	entry = (void *)e->e_entry;			entry = (void *)e->e_entry;
	printf("Kernel entry at %p...\n", entry);			printf("Kernel entry at %p...\n", entry);

	dev_cleanup();			dev_cleanup();
	printf("Kernel args: %s\n", fp->f_args);			printf("Kernel args: %s\n", fp->f_args);

				#ifdef __powerpc__
				((void ()(u_long, u_long, u_long, void , u_long))entry)(dtbp, 0, 0,
				(void *)mdp, 0xfb5d104d);
				mizhkaUnsubmitted Not Done Inline Actions I wonder what is magic constant? mizhka: I wonder what is magic constant?
				jhibbitsAuthorUnsubmitted Done Inline Actions Nathan put this magic constant in for PowerPC booting, to denote booting with the new loader, about a year ago, with the goal of distinguishing r6 as having a real metadata pointer instead of potentially garbage. Right now everything beyond dtbp is not used, but it will be in the future, as I bring booke booting up to parity with AIM. jhibbits: Nathan put this magic constant in for PowerPC booting, to denote booting with the new loader…
				#else
	(entry)((void )mdp);			(entry)((void )mdp);
				#endif
	panic("exec returned");			panic("exec returned");
	}			}

	struct file_format uboot_elf = {			struct file_format uboot_elf = {
	__elfN(uboot_load),			__elfN(uboot_load),
	__elfN(uboot_exec)			__elfN(uboot_exec)
	};			};