[mirror_ubuntu-eoan-kernel.git] / arch / s390 / kernel / machine_kexec_reloc.c

// SPDX-License-Identifier: GPL-2.0
#include <linux/elf.h>
#include <asm/kexec.h>

int arch_kexec_do_relocs(int r_type, void *loc, unsigned long val,
			 unsigned long addr)
{
	switch (r_type) {
	case R_390_NONE:
		break;
	case R_390_8:		/* Direct 8 bit.   */
		*(u8 *)loc = val;
		break;
	case R_390_12:		/* Direct 12 bit.  */
		*(u16 *)loc &= 0xf000;
		*(u16 *)loc |= val & 0xfff;
		break;
	case R_390_16:		/* Direct 16 bit.  */
		*(u16 *)loc = val;
		break;
	case R_390_20:		/* Direct 20 bit.  */
		*(u32 *)loc &= 0xf00000ff;
		*(u32 *)loc |= (val & 0xfff) << 16;	/* DL */
		*(u32 *)loc |= (val & 0xff000) >> 4;	/* DH */
		break;
	case R_390_32:		/* Direct 32 bit.  */
		*(u32 *)loc = val;
		break;
	case R_390_64:		/* Direct 64 bit.  */
		*(u64 *)loc = val;
		break;
	case R_390_PC16:	/* PC relative 16 bit.	*/
		*(u16 *)loc = (val - addr);
		break;
	case R_390_PC16DBL:	/* PC relative 16 bit shifted by 1.  */
		*(u16 *)loc = (val - addr) >> 1;
		break;
	case R_390_PC32DBL:	/* PC relative 32 bit shifted by 1.  */
		*(u32 *)loc = (val - addr) >> 1;
		break;
	case R_390_PC32:	/* PC relative 32 bit.	*/
		*(u32 *)loc = (val - addr);
		break;
	case R_390_PC64:	/* PC relative 64 bit.	*/
		*(u64 *)loc = (val - addr);
		break;
	case R_390_RELATIVE:
		*(unsigned long *) loc = val;
		break;
	default:
		return 1;
	}
	return 0;
}
Commit	Line	Data
805bc0bc GS	1	// SPDX-License-Identifier: GPL-2.0
805bc0bc GS	2	#include <linux/elf.h>
1877011a	3	#include <asm/kexec.h>
805bc0bc GS	4
	5	int arch_kexec_do_relocs(int r_type, void *loc, unsigned long val,
	6	unsigned long addr)
	7	{
	8	switch (r_type) {
	9	case R_390_NONE:
	10	break;
	11	case R_390_8: /* Direct 8 bit. */
	12	(u8 )loc = val;
	13	break;
	14	case R_390_12: /* Direct 12 bit. */
	15	(u16 )loc &= 0xf000;
	16	(u16 )loc \|= val & 0xfff;
	17	break;
	18	case R_390_16: /* Direct 16 bit. */
	19	(u16 )loc = val;
	20	break;
	21	case R_390_20: /* Direct 20 bit. */
	22	(u32 )loc &= 0xf00000ff;
	23	(u32 )loc \|= (val & 0xfff) << 16; /* DL */
	24	(u32 )loc \|= (val & 0xff000) >> 4; /* DH */
	25	break;
	26	case R_390_32: /* Direct 32 bit. */
	27	(u32 )loc = val;
	28	break;
	29	case R_390_64: /* Direct 64 bit. */
	30	(u64 )loc = val;
	31	break;
	32	case R_390_PC16: /* PC relative 16 bit. */
	33	(u16 )loc = (val - addr);
	34	break;
	35	case R_390_PC16DBL: /* PC relative 16 bit shifted by 1. */
	36	(u16 )loc = (val - addr) >> 1;
	37	break;
	38	case R_390_PC32DBL: /* PC relative 32 bit shifted by 1. */
	39	(u32 )loc = (val - addr) >> 1;
	40	break;
	41	case R_390_PC32: /* PC relative 32 bit. */
	42	(u32 )loc = (val - addr);
	43	break;
	44	case R_390_PC64: /* PC relative 64 bit. */
	45	(u64 )loc = (val - addr);
	46	break;
	47	case R_390_RELATIVE:
	48	(unsigned long ) loc = val;
	49	break;
	50	default:
	51	return 1;
	52	}
	53	return 0;
	54	}