Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *  S390 version
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *  Derived from "include/asm-i386/elf.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #ifndef __ASMS390_ELF_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #define __ASMS390_ELF_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) /* s390 relocations defined by the ABIs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #define R_390_NONE		0	/* No reloc.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #define R_390_8			1	/* Direct 8 bit.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #define R_390_12		2	/* Direct 12 bit.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #define R_390_16		3	/* Direct 16 bit.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #define R_390_32		4	/* Direct 32 bit.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #define R_390_PC32		5	/* PC relative 32 bit.	*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #define R_390_GOT12		6	/* 12 bit GOT offset.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #define R_390_GOT32		7	/* 32 bit GOT offset.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #define R_390_PLT32		8	/* 32 bit PC relative PLT address.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #define R_390_COPY		9	/* Copy symbol at runtime.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define R_390_GLOB_DAT		10	/* Create GOT entry.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define R_390_JMP_SLOT		11	/* Create PLT entry.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define R_390_RELATIVE		12	/* Adjust by program base.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define R_390_GOTOFF32		13	/* 32 bit offset to GOT.	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define R_390_GOTPC		14	/* 32 bit PC rel. offset to GOT.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define R_390_GOT16		15	/* 16 bit GOT offset.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define R_390_PC16		16	/* PC relative 16 bit.	*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define R_390_PC16DBL		17	/* PC relative 16 bit shifted by 1.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define R_390_PLT16DBL		18	/* 16 bit PC rel. PLT shifted by 1.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define R_390_PC32DBL		19	/* PC relative 32 bit shifted by 1.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define R_390_PLT32DBL		20	/* 32 bit PC rel. PLT shifted by 1.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define R_390_GOTPCDBL		21	/* 32 bit PC rel. GOT shifted by 1.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define R_390_64		22	/* Direct 64 bit.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define R_390_PC64		23	/* PC relative 64 bit.	*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define R_390_GOT64		24	/* 64 bit GOT offset.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #define R_390_PLT64		25	/* 64 bit PC relative PLT address.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #define R_390_GOTENT		26	/* 32 bit PC rel. to GOT entry >> 1. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #define R_390_GOTOFF16		27	/* 16 bit offset to GOT. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #define R_390_GOTOFF64		28	/* 64 bit offset to GOT. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #define R_390_GOTPLT12		29	/* 12 bit offset to jump slot.	*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) #define R_390_GOTPLT16		30	/* 16 bit offset to jump slot.	*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #define R_390_GOTPLT32		31	/* 32 bit offset to jump slot.	*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #define R_390_GOTPLT64		32	/* 64 bit offset to jump slot.	*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) #define R_390_GOTPLTENT		33	/* 32 bit rel. offset to jump slot.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) #define R_390_PLTOFF16		34	/* 16 bit offset from GOT to PLT. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #define R_390_PLTOFF32		35	/* 32 bit offset from GOT to PLT. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) #define R_390_PLTOFF64		36	/* 16 bit offset from GOT to PLT. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) #define R_390_TLS_LOAD		37	/* Tag for load insn in TLS code. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) #define R_390_TLS_GDCALL	38	/* Tag for function call in general
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51)                                            dynamic TLS code.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) #define R_390_TLS_LDCALL	39	/* Tag for function call in local
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53)                                            dynamic TLS code.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) #define R_390_TLS_GD32		40	/* Direct 32 bit for general dynamic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55)                                            thread local data.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) #define R_390_TLS_GD64		41	/* Direct 64 bit for general dynamic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57)                                            thread local data.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) #define R_390_TLS_GOTIE12	42	/* 12 bit GOT offset for static TLS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59)                                            block offset.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) #define R_390_TLS_GOTIE32	43	/* 32 bit GOT offset for static TLS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61)                                            block offset.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) #define R_390_TLS_GOTIE64	44	/* 64 bit GOT offset for static TLS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63)                                            block offset.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) #define R_390_TLS_LDM32		45	/* Direct 32 bit for local dynamic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65)                                            thread local data in LD code.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) #define R_390_TLS_LDM64		46	/* Direct 64 bit for local dynamic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67)                                            thread local data in LD code.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) #define R_390_TLS_IE32		47	/* 32 bit address of GOT entry for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69)                                            negated static TLS block offset.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) #define R_390_TLS_IE64		48	/* 64 bit address of GOT entry for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71)                                            negated static TLS block offset.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) #define R_390_TLS_IEENT		49	/* 32 bit rel. offset to GOT entry for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73)                                            negated static TLS block offset.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) #define R_390_TLS_LE32		50	/* 32 bit negated offset relative to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75)                                            static TLS block.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) #define R_390_TLS_LE64		51	/* 64 bit negated offset relative to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77)                                            static TLS block.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) #define R_390_TLS_LDO32		52	/* 32 bit offset relative to TLS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79)                                            block.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) #define R_390_TLS_LDO64		53	/* 64 bit offset relative to TLS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81)                                            block.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) #define R_390_TLS_DTPMOD	54	/* ID of module containing symbol.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) #define R_390_TLS_DTPOFF	55	/* Offset in TLS block.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) #define R_390_TLS_TPOFF		56	/* Negate offset in static TLS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85)                                            block.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) #define R_390_20		57	/* Direct 20 bit.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) #define R_390_GOT20		58	/* 20 bit GOT offset.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) #define R_390_GOTPLT20		59	/* 20 bit offset to jump slot.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) #define R_390_TLS_GOTIE20	60	/* 20 bit GOT offset for static TLS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 					   block offset.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) /* Keep this the last entry.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) #define R_390_NUM	61
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) /* Bits present in AT_HWCAP. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) #define HWCAP_S390_ESAN3	1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) #define HWCAP_S390_ZARCH	2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) #define HWCAP_S390_STFLE	4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) #define HWCAP_S390_MSA		8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) #define HWCAP_S390_LDISP	16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #define HWCAP_S390_EIMM		32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define HWCAP_S390_DFP		64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #define HWCAP_S390_HPAGE	128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define HWCAP_S390_ETF3EH	256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #define HWCAP_S390_HIGH_GPRS	512
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #define HWCAP_S390_TE		1024
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #define HWCAP_S390_VXRS		2048
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #define HWCAP_S390_VXRS_BCD	4096
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #define HWCAP_S390_VXRS_EXT	8192
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #define HWCAP_S390_GS		16384
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) #define HWCAP_S390_VXRS_EXT2	32768
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #define HWCAP_S390_VXRS_PDE	65536
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #define HWCAP_S390_SORT		131072
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) #define HWCAP_S390_DFLT		262144
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) /* Internal bits, not exposed via elf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #define HWCAP_INT_SIE		1UL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)  * These are used to set parameters in the core dumps.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) #define ELF_CLASS	ELFCLASS64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #define ELF_DATA	ELFDATA2MSB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) #define ELF_ARCH	EM_S390
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /* s390 specific phdr types */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) #define PT_S390_PGSTE	0x70000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)  * ELF register definitions..
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #include <linux/compat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) #include <asm/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) #include <asm/syscall.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) #include <asm/user.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) typedef s390_fp_regs elf_fpregset_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) typedef s390_regs elf_gregset_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) typedef s390_fp_regs compat_elf_fpregset_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) typedef s390_compat_regs compat_elf_gregset_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) #include <linux/sched/mm.h>	/* for task_struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) #include <asm/mmu_context.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) #include <asm/vdso.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) extern unsigned int vdso_enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)  * This is used to ensure we don't load something for the wrong architecture.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #define elf_check_arch(x) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	(((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)          && (x)->e_ident[EI_CLASS] == ELF_CLASS) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) #define compat_elf_check_arch(x) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	(((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	 && (x)->e_ident[EI_CLASS] == ELF_CLASS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) #define compat_start_thread	start_thread31
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) struct arch_elf_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) #define INIT_ARCH_ELF_STATE { .rc = 0 }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) #define arch_check_elf(ehdr, interp, interp_ehdr, state) (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) #ifdef CONFIG_PGSTE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) #define arch_elf_pt_proc(ehdr, phdr, elf, interp, state)	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) ({								\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	struct arch_elf_state *_state = state;			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	if ((phdr)->p_type == PT_S390_PGSTE &&			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	    !page_table_allocate_pgste &&			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	    !test_thread_flag(TIF_PGSTE) &&			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	    !current->mm->context.alloc_pgste) {		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		set_thread_flag(TIF_PGSTE);			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		set_pt_regs_flag(task_pt_regs(current),		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 				 PIF_SYSCALL_RESTART);		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		_state->rc = -EAGAIN;				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	}							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	_state->rc;						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) #define arch_elf_pt_proc(ehdr, phdr, elf, interp, state)	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) ({								\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	(state)->rc;						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) /* For SVR4/S390 the function pointer to be registered with `atexit` is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)    passed in R14. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) #define ELF_PLAT_INIT(_r, load_addr) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		_r->gprs[14] = 0; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	} while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) #define CORE_DUMP_USE_REGSET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) #define ELF_EXEC_PAGESIZE	PAGE_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)    use of this is to invoke "./ld.so someprog" to test out a new version of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)    the loader.  We need to make sure that it is out of the way of the program
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)    that it will "exec", and that there is sufficient room for the brk. 64-bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)    tasks are aligned to 4GB. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) #define ELF_ET_DYN_BASE (is_compat_task() ? \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 				(STACK_TOP / 3 * 2) : \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 				(STACK_TOP / 3 * 2) & ~((1UL << 32) - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) /* This yields a mask that user programs can use to figure out what
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)    instruction set this CPU supports. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) extern unsigned long elf_hwcap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) #define ELF_HWCAP (elf_hwcap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) /* Internal hardware capabilities, not exposed via elf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) extern unsigned long int_hwcap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) /* This yields a string that ld.so will use to load implementation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)    specific libraries for optimization.  This is more specific in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)    intent than poking at uname or /proc/cpuinfo.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)    For the moment, we have only optimizations for the Intel generations,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)    but that could change... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) #define ELF_PLATFORM_SIZE 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) extern char elf_platform[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) #define ELF_PLATFORM (elf_platform)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) #ifndef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) #define SET_PERSONALITY(ex) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) do {								\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	set_personality(PER_LINUX |				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		(current->personality & (~PER_MASK)));		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	current->thread.sys_call_table =			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		(unsigned long) &sys_call_table;		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) #else /* CONFIG_COMPAT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) #define SET_PERSONALITY(ex)					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) do {								\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	if (personality(current->personality) != PER_LINUX32)	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		set_personality(PER_LINUX |			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 			(current->personality & ~PER_MASK));	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	if ((ex).e_ident[EI_CLASS] == ELFCLASS32) {		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		set_thread_flag(TIF_31BIT);			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		current->thread.sys_call_table =		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 			(unsigned long)	&sys_call_table_emu;	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	} else {						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		clear_thread_flag(TIF_31BIT);			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		current->thread.sys_call_table =		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 			(unsigned long) &sys_call_table;	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	}							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) #endif /* CONFIG_COMPAT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)  * Cache aliasing on the latest machines calls for a mapping granularity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)  * of 512KB for the anonymous mapping base. For 64-bit processes use a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)  * 512KB alignment and a randomization of up to 1GB. For 31-bit processes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)  * the virtual address space is limited, use no alignment and limit the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)  * randomization to 8MB.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)  * For the additional randomization of the program break use 32MB for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)  * 64-bit and 8MB for 31-bit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) #define BRK_RND_MASK	(is_compat_task() ? 0x7ffUL : 0x1fffUL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) #define MMAP_RND_MASK	(is_compat_task() ? 0x7ffUL : 0x3ff80UL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) #define MMAP_ALIGN_MASK	(is_compat_task() ? 0 : 0x7fUL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) #define STACK_RND_MASK	MMAP_RND_MASK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) #define ARCH_DLINFO							    \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) do {									    \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	if (vdso_enabled)						    \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 		NEW_AUX_ENT(AT_SYSINFO_EHDR,				    \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 			    (unsigned long)current->mm->context.vdso_base); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) struct linux_binprm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) int arch_setup_additional_pages(struct linux_binprm *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) #endif