s390/kernel/asm-offsets.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * Generate definitions needed by assembly language modules.
0004  * This code generates raw asm output which is post-processed to extract
0005  * and format the required data.
0006  */
0007
0008 #define ASM_OFFSETS_C
0009
0010 #include <linux/kbuild.h>
0011 #include <linux/kvm_host.h>
0012 #include <linux/sched.h>
0013 #include <linux/purgatory.h>
0014 #include <linux/pgtable.h>
0015 #include <asm/idle.h>
0016 #include <asm/gmap.h>
0017 #include <asm/stacktrace.h>
0018
0019 int main(void)
0020 {
0021     /* task struct offsets */
0022     OFFSET(__TASK_stack, task_struct, stack);
0023     OFFSET(__TASK_thread, task_struct, thread);
0024     OFFSET(__TASK_pid, task_struct, pid);
0025     BLANK();
0026     /* thread struct offsets */
0027     OFFSET(__THREAD_ksp, thread_struct, ksp);
0028     BLANK();
0029     /* thread info offsets */
0030     OFFSET(__TI_flags, task_struct, thread_info.flags);
0031     BLANK();
0032     /* pt_regs offsets */
0033     OFFSET(__PT_PSW, pt_regs, psw);
0034     OFFSET(__PT_GPRS, pt_regs, gprs);
0035     OFFSET(__PT_R0, pt_regs, gprs[0]);
0036     OFFSET(__PT_R1, pt_regs, gprs[1]);
0037     OFFSET(__PT_R2, pt_regs, gprs[2]);
0038     OFFSET(__PT_R3, pt_regs, gprs[3]);
0039     OFFSET(__PT_R4, pt_regs, gprs[4]);
0040     OFFSET(__PT_R5, pt_regs, gprs[5]);
0041     OFFSET(__PT_R6, pt_regs, gprs[6]);
0042     OFFSET(__PT_R7, pt_regs, gprs[7]);
0043     OFFSET(__PT_R8, pt_regs, gprs[8]);
0044     OFFSET(__PT_R9, pt_regs, gprs[9]);
0045     OFFSET(__PT_R10, pt_regs, gprs[10]);
0046     OFFSET(__PT_R11, pt_regs, gprs[11]);
0047     OFFSET(__PT_R12, pt_regs, gprs[12]);
0048     OFFSET(__PT_R13, pt_regs, gprs[13]);
0049     OFFSET(__PT_R14, pt_regs, gprs[14]);
0050     OFFSET(__PT_R15, pt_regs, gprs[15]);
0051     OFFSET(__PT_ORIG_GPR2, pt_regs, orig_gpr2);
0052     OFFSET(__PT_FLAGS, pt_regs, flags);
0053     OFFSET(__PT_CR1, pt_regs, cr1);
0054     OFFSET(__PT_LAST_BREAK, pt_regs, last_break);
0055     DEFINE(__PT_SIZE, sizeof(struct pt_regs));
0056     BLANK();
0057     /* stack_frame offsets */
0058     OFFSET(__SF_BACKCHAIN, stack_frame, back_chain);
0059     OFFSET(__SF_GPRS, stack_frame, gprs);
0060     OFFSET(__SF_EMPTY, stack_frame, empty[0]);
0061     OFFSET(__SF_SIE_CONTROL, stack_frame, sie_control_block);
0062     OFFSET(__SF_SIE_SAVEAREA, stack_frame, sie_savearea);
0063     OFFSET(__SF_SIE_REASON, stack_frame, sie_reason);
0064     OFFSET(__SF_SIE_FLAGS, stack_frame, sie_flags);
0065     DEFINE(STACK_FRAME_OVERHEAD, sizeof(struct stack_frame));
0066     BLANK();
0067     /* idle data offsets */
0068     OFFSET(__CLOCK_IDLE_ENTER, s390_idle_data, clock_idle_enter);
0069     OFFSET(__TIMER_IDLE_ENTER, s390_idle_data, timer_idle_enter);
0070     OFFSET(__MT_CYCLES_ENTER, s390_idle_data, mt_cycles_enter);
0071     BLANK();
0072     /* hardware defined lowcore locations 0x000 - 0x1ff */
0073     OFFSET(__LC_EXT_PARAMS, lowcore, ext_params);
0074     OFFSET(__LC_EXT_CPU_ADDR, lowcore, ext_cpu_addr);
0075     OFFSET(__LC_EXT_INT_CODE, lowcore, ext_int_code);
0076     OFFSET(__LC_PGM_ILC, lowcore, pgm_ilc);
0077     OFFSET(__LC_PGM_INT_CODE, lowcore, pgm_code);
0078     OFFSET(__LC_DATA_EXC_CODE, lowcore, data_exc_code);
0079     OFFSET(__LC_MON_CLASS_NR, lowcore, mon_class_num);
0080     OFFSET(__LC_PER_CODE, lowcore, per_code);
0081     OFFSET(__LC_PER_ATMID, lowcore, per_atmid);
0082     OFFSET(__LC_PER_ADDRESS, lowcore, per_address);
0083     OFFSET(__LC_EXC_ACCESS_ID, lowcore, exc_access_id);
0084     OFFSET(__LC_PER_ACCESS_ID, lowcore, per_access_id);
0085     OFFSET(__LC_OP_ACCESS_ID, lowcore, op_access_id);
0086     OFFSET(__LC_AR_MODE_ID, lowcore, ar_mode_id);
0087     OFFSET(__LC_TRANS_EXC_CODE, lowcore, trans_exc_code);
0088     OFFSET(__LC_MON_CODE, lowcore, monitor_code);
0089     OFFSET(__LC_SUBCHANNEL_ID, lowcore, subchannel_id);
0090     OFFSET(__LC_SUBCHANNEL_NR, lowcore, subchannel_nr);
0091     OFFSET(__LC_IO_INT_PARM, lowcore, io_int_parm);
0092     OFFSET(__LC_IO_INT_WORD, lowcore, io_int_word);
0093     OFFSET(__LC_MCCK_CODE, lowcore, mcck_interruption_code);
0094     OFFSET(__LC_EXT_DAMAGE_CODE, lowcore, external_damage_code);
0095     OFFSET(__LC_MCCK_FAIL_STOR_ADDR, lowcore, failing_storage_address);
0096     OFFSET(__LC_PGM_LAST_BREAK, lowcore, pgm_last_break);
0097     OFFSET(__LC_RETURN_LPSWE, lowcore, return_lpswe);
0098     OFFSET(__LC_RETURN_MCCK_LPSWE, lowcore, return_mcck_lpswe);
0099     OFFSET(__LC_RST_OLD_PSW, lowcore, restart_old_psw);
0100     OFFSET(__LC_EXT_OLD_PSW, lowcore, external_old_psw);
0101     OFFSET(__LC_SVC_OLD_PSW, lowcore, svc_old_psw);
0102     OFFSET(__LC_PGM_OLD_PSW, lowcore, program_old_psw);
0103     OFFSET(__LC_MCK_OLD_PSW, lowcore, mcck_old_psw);
0104     OFFSET(__LC_IO_OLD_PSW, lowcore, io_old_psw);
0105     OFFSET(__LC_RST_NEW_PSW, lowcore, restart_psw);
0106     OFFSET(__LC_EXT_NEW_PSW, lowcore, external_new_psw);
0107     OFFSET(__LC_SVC_NEW_PSW, lowcore, svc_new_psw);
0108     OFFSET(__LC_PGM_NEW_PSW, lowcore, program_new_psw);
0109     OFFSET(__LC_MCK_NEW_PSW, lowcore, mcck_new_psw);
0110     OFFSET(__LC_IO_NEW_PSW, lowcore, io_new_psw);
0111     /* software defined lowcore locations 0x200 - 0xdff*/
0112     OFFSET(__LC_SAVE_AREA_SYNC, lowcore, save_area_sync);
0113     OFFSET(__LC_SAVE_AREA_ASYNC, lowcore, save_area_async);
0114     OFFSET(__LC_SAVE_AREA_RESTART, lowcore, save_area_restart);
0115     OFFSET(__LC_CPU_FLAGS, lowcore, cpu_flags);
0116     OFFSET(__LC_RETURN_PSW, lowcore, return_psw);
0117     OFFSET(__LC_RETURN_MCCK_PSW, lowcore, return_mcck_psw);
0118     OFFSET(__LC_SYS_ENTER_TIMER, lowcore, sys_enter_timer);
0119     OFFSET(__LC_MCCK_ENTER_TIMER, lowcore, mcck_enter_timer);
0120     OFFSET(__LC_EXIT_TIMER, lowcore, exit_timer);
0121     OFFSET(__LC_LAST_UPDATE_TIMER, lowcore, last_update_timer);
0122     OFFSET(__LC_LAST_UPDATE_CLOCK, lowcore, last_update_clock);
0123     OFFSET(__LC_INT_CLOCK, lowcore, int_clock);
0124     OFFSET(__LC_MCCK_CLOCK, lowcore, mcck_clock);
0125     OFFSET(__LC_BOOT_CLOCK, lowcore, boot_clock);
0126     OFFSET(__LC_CURRENT, lowcore, current_task);
0127     OFFSET(__LC_KERNEL_STACK, lowcore, kernel_stack);
0128     OFFSET(__LC_ASYNC_STACK, lowcore, async_stack);
0129     OFFSET(__LC_NODAT_STACK, lowcore, nodat_stack);
0130     OFFSET(__LC_RESTART_STACK, lowcore, restart_stack);
0131     OFFSET(__LC_MCCK_STACK, lowcore, mcck_stack);
0132     OFFSET(__LC_RESTART_FN, lowcore, restart_fn);
0133     OFFSET(__LC_RESTART_DATA, lowcore, restart_data);
0134     OFFSET(__LC_RESTART_SOURCE, lowcore, restart_source);
0135     OFFSET(__LC_RESTART_FLAGS, lowcore, restart_flags);
0136     OFFSET(__LC_KERNEL_ASCE, lowcore, kernel_asce);
0137     OFFSET(__LC_USER_ASCE, lowcore, user_asce);
0138     OFFSET(__LC_LPP, lowcore, lpp);
0139     OFFSET(__LC_CURRENT_PID, lowcore, current_pid);
0140     OFFSET(__LC_GMAP, lowcore, gmap);
0141     OFFSET(__LC_LAST_BREAK, lowcore, last_break);
0142     /* software defined ABI-relevant lowcore locations 0xe00 - 0xe20 */
0143     OFFSET(__LC_DUMP_REIPL, lowcore, ipib);
0144     OFFSET(__LC_VMCORE_INFO, lowcore, vmcore_info);
0145     OFFSET(__LC_OS_INFO, lowcore, os_info);
0146     /* hardware defined lowcore locations 0x1000 - 0x18ff */
0147     OFFSET(__LC_MCESAD, lowcore, mcesad);
0148     OFFSET(__LC_EXT_PARAMS2, lowcore, ext_params2);
0149     OFFSET(__LC_FPREGS_SAVE_AREA, lowcore, floating_pt_save_area);
0150     OFFSET(__LC_GPREGS_SAVE_AREA, lowcore, gpregs_save_area);
0151     OFFSET(__LC_PSW_SAVE_AREA, lowcore, psw_save_area);
0152     OFFSET(__LC_PREFIX_SAVE_AREA, lowcore, prefixreg_save_area);
0153     OFFSET(__LC_FP_CREG_SAVE_AREA, lowcore, fpt_creg_save_area);
0154     OFFSET(__LC_TOD_PROGREG_SAVE_AREA, lowcore, tod_progreg_save_area);
0155     OFFSET(__LC_CPU_TIMER_SAVE_AREA, lowcore, cpu_timer_save_area);
0156     OFFSET(__LC_CLOCK_COMP_SAVE_AREA, lowcore, clock_comp_save_area);
0157     OFFSET(__LC_LAST_BREAK_SAVE_AREA, lowcore, last_break_save_area);
0158     OFFSET(__LC_AREGS_SAVE_AREA, lowcore, access_regs_save_area);
0159     OFFSET(__LC_CREGS_SAVE_AREA, lowcore, cregs_save_area);
0160     OFFSET(__LC_PGM_TDB, lowcore, pgm_tdb);
0161     BLANK();
0162     /* gmap/sie offsets */
0163     OFFSET(__GMAP_ASCE, gmap, asce);
0164     OFFSET(__SIE_PROG0C, kvm_s390_sie_block, prog0c);
0165     OFFSET(__SIE_PROG20, kvm_s390_sie_block, prog20);
0166     /* kexec_sha_region */
0167     OFFSET(__KEXEC_SHA_REGION_START, kexec_sha_region, start);
0168     OFFSET(__KEXEC_SHA_REGION_LEN, kexec_sha_region, len);
0169     DEFINE(__KEXEC_SHA_REGION_SIZE, sizeof(struct kexec_sha_region));
0170     /* sizeof kernel parameter area */
0171     DEFINE(__PARMAREA_SIZE, sizeof(struct parmarea));
0172     /* kernel parameter area offsets */
0173     DEFINE(IPL_DEVICE, PARMAREA + offsetof(struct parmarea, ipl_device));
0174     DEFINE(INITRD_START, PARMAREA + offsetof(struct parmarea, initrd_start));
0175     DEFINE(INITRD_SIZE, PARMAREA + offsetof(struct parmarea, initrd_size));
0176     DEFINE(OLDMEM_BASE, PARMAREA + offsetof(struct parmarea, oldmem_base));
0177     DEFINE(OLDMEM_SIZE, PARMAREA + offsetof(struct parmarea, oldmem_size));
0178     DEFINE(COMMAND_LINE, PARMAREA + offsetof(struct parmarea, command_line));
0179     DEFINE(MAX_COMMAND_LINE_SIZE, PARMAREA + offsetof(struct parmarea, max_command_line_size));
0180     return 0;
0181 }