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linux/arch/loongarch/kernel/asm-offsets.c
Qi Hu 112380996a LoongArch: Remove obsolete mentions of vcsr 
The `vcsr` only exists in the old hardware design, it isn't used in any
shipped hardware from Loongson-3A5000 on. Both scalar FP and LSX/LASX
instructions use the `fcsr` as their control and status registers now.
For example, the RM control bit in fcsr0 is shared by FP, LSX and LASX
instructions.

Particularly, fcsr16 to fcsr31 are reserved for LSX/LASX now, access to
these registers has no visible effect if LSX/LASX is enabled, and will
cause SXD/ASXD exceptions if LSX/LASX is not enabled.

So, mentions of vcsr are obsolete in the first place (it was just used
for debugging), let's remove them.

Reviewed-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Qi Hu <huqi@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2022-07-07 17:41:01 +08:00

264 lines
7.9 KiB
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// SPDX-License-Identifier: GPL-2.0
/*
* asm-offsets.c: Calculate pt_regs and task_struct offsets.
*
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/kbuild.h>
#include <linux/suspend.h>
#include <asm/cpu-info.h>
#include <asm/ptrace.h>
#include <asm/processor.h>
void output_ptreg_defines(void)
{
COMMENT("LoongArch pt_regs offsets.");
OFFSET(PT_R0, pt_regs, regs[0]);
OFFSET(PT_R1, pt_regs, regs[1]);
OFFSET(PT_R2, pt_regs, regs[2]);
OFFSET(PT_R3, pt_regs, regs[3]);
OFFSET(PT_R4, pt_regs, regs[4]);
OFFSET(PT_R5, pt_regs, regs[5]);
OFFSET(PT_R6, pt_regs, regs[6]);
OFFSET(PT_R7, pt_regs, regs[7]);
OFFSET(PT_R8, pt_regs, regs[8]);
OFFSET(PT_R9, pt_regs, regs[9]);
OFFSET(PT_R10, pt_regs, regs[10]);
OFFSET(PT_R11, pt_regs, regs[11]);
OFFSET(PT_R12, pt_regs, regs[12]);
OFFSET(PT_R13, pt_regs, regs[13]);
OFFSET(PT_R14, pt_regs, regs[14]);
OFFSET(PT_R15, pt_regs, regs[15]);
OFFSET(PT_R16, pt_regs, regs[16]);
OFFSET(PT_R17, pt_regs, regs[17]);
OFFSET(PT_R18, pt_regs, regs[18]);
OFFSET(PT_R19, pt_regs, regs[19]);
OFFSET(PT_R20, pt_regs, regs[20]);
OFFSET(PT_R21, pt_regs, regs[21]);
OFFSET(PT_R22, pt_regs, regs[22]);
OFFSET(PT_R23, pt_regs, regs[23]);
OFFSET(PT_R24, pt_regs, regs[24]);
OFFSET(PT_R25, pt_regs, regs[25]);
OFFSET(PT_R26, pt_regs, regs[26]);
OFFSET(PT_R27, pt_regs, regs[27]);
OFFSET(PT_R28, pt_regs, regs[28]);
OFFSET(PT_R29, pt_regs, regs[29]);
OFFSET(PT_R30, pt_regs, regs[30]);
OFFSET(PT_R31, pt_regs, regs[31]);
OFFSET(PT_CRMD, pt_regs, csr_crmd);
OFFSET(PT_PRMD, pt_regs, csr_prmd);
OFFSET(PT_EUEN, pt_regs, csr_euen);
OFFSET(PT_ECFG, pt_regs, csr_ecfg);
OFFSET(PT_ESTAT, pt_regs, csr_estat);
OFFSET(PT_ERA, pt_regs, csr_era);
OFFSET(PT_BVADDR, pt_regs, csr_badvaddr);
OFFSET(PT_ORIG_A0, pt_regs, orig_a0);
DEFINE(PT_SIZE, sizeof(struct pt_regs));
BLANK();
}
void output_task_defines(void)
{
COMMENT("LoongArch task_struct offsets.");
OFFSET(TASK_STATE, task_struct, __state);
OFFSET(TASK_THREAD_INFO, task_struct, stack);
OFFSET(TASK_FLAGS, task_struct, flags);
OFFSET(TASK_MM, task_struct, mm);
OFFSET(TASK_PID, task_struct, pid);
DEFINE(TASK_STRUCT_SIZE, sizeof(struct task_struct));
BLANK();
}
void output_thread_info_defines(void)
{
COMMENT("LoongArch thread_info offsets.");
OFFSET(TI_TASK, thread_info, task);
OFFSET(TI_FLAGS, thread_info, flags);
OFFSET(TI_TP_VALUE, thread_info, tp_value);
OFFSET(TI_CPU, thread_info, cpu);
OFFSET(TI_PRE_COUNT, thread_info, preempt_count);
OFFSET(TI_REGS, thread_info, regs);
DEFINE(_THREAD_SIZE, THREAD_SIZE);
DEFINE(_THREAD_MASK, THREAD_MASK);
DEFINE(_IRQ_STACK_SIZE, IRQ_STACK_SIZE);
DEFINE(_IRQ_STACK_START, IRQ_STACK_START);
BLANK();
}
void output_thread_defines(void)
{
COMMENT("LoongArch specific thread_struct offsets.");
OFFSET(THREAD_REG01, task_struct, thread.reg01);
OFFSET(THREAD_REG03, task_struct, thread.reg03);
OFFSET(THREAD_REG22, task_struct, thread.reg22);
OFFSET(THREAD_REG23, task_struct, thread.reg23);
OFFSET(THREAD_REG24, task_struct, thread.reg24);
OFFSET(THREAD_REG25, task_struct, thread.reg25);
OFFSET(THREAD_REG26, task_struct, thread.reg26);
OFFSET(THREAD_REG27, task_struct, thread.reg27);
OFFSET(THREAD_REG28, task_struct, thread.reg28);
OFFSET(THREAD_REG29, task_struct, thread.reg29);
OFFSET(THREAD_REG30, task_struct, thread.reg30);
OFFSET(THREAD_REG31, task_struct, thread.reg31);
OFFSET(THREAD_CSRCRMD, task_struct,
thread.csr_crmd);
OFFSET(THREAD_CSRPRMD, task_struct,
thread.csr_prmd);
OFFSET(THREAD_CSREUEN, task_struct,
thread.csr_euen);
OFFSET(THREAD_CSRECFG, task_struct,
thread.csr_ecfg);
OFFSET(THREAD_SCR0, task_struct, thread.scr0);
OFFSET(THREAD_SCR1, task_struct, thread.scr1);
OFFSET(THREAD_SCR2, task_struct, thread.scr2);
OFFSET(THREAD_SCR3, task_struct, thread.scr3);
OFFSET(THREAD_EFLAGS, task_struct, thread.eflags);
OFFSET(THREAD_FPU, task_struct, thread.fpu);
OFFSET(THREAD_BVADDR, task_struct, \
thread.csr_badvaddr);
OFFSET(THREAD_ECODE, task_struct, \
thread.error_code);
OFFSET(THREAD_TRAPNO, task_struct, thread.trap_nr);
BLANK();
}
void output_thread_fpu_defines(void)
{
OFFSET(THREAD_FPR0, loongarch_fpu, fpr[0]);
OFFSET(THREAD_FPR1, loongarch_fpu, fpr[1]);
OFFSET(THREAD_FPR2, loongarch_fpu, fpr[2]);
OFFSET(THREAD_FPR3, loongarch_fpu, fpr[3]);
OFFSET(THREAD_FPR4, loongarch_fpu, fpr[4]);
OFFSET(THREAD_FPR5, loongarch_fpu, fpr[5]);
OFFSET(THREAD_FPR6, loongarch_fpu, fpr[6]);
OFFSET(THREAD_FPR7, loongarch_fpu, fpr[7]);
OFFSET(THREAD_FPR8, loongarch_fpu, fpr[8]);
OFFSET(THREAD_FPR9, loongarch_fpu, fpr[9]);
OFFSET(THREAD_FPR10, loongarch_fpu, fpr[10]);
OFFSET(THREAD_FPR11, loongarch_fpu, fpr[11]);
OFFSET(THREAD_FPR12, loongarch_fpu, fpr[12]);
OFFSET(THREAD_FPR13, loongarch_fpu, fpr[13]);
OFFSET(THREAD_FPR14, loongarch_fpu, fpr[14]);
OFFSET(THREAD_FPR15, loongarch_fpu, fpr[15]);
OFFSET(THREAD_FPR16, loongarch_fpu, fpr[16]);
OFFSET(THREAD_FPR17, loongarch_fpu, fpr[17]);
OFFSET(THREAD_FPR18, loongarch_fpu, fpr[18]);
OFFSET(THREAD_FPR19, loongarch_fpu, fpr[19]);
OFFSET(THREAD_FPR20, loongarch_fpu, fpr[20]);
OFFSET(THREAD_FPR21, loongarch_fpu, fpr[21]);
OFFSET(THREAD_FPR22, loongarch_fpu, fpr[22]);
OFFSET(THREAD_FPR23, loongarch_fpu, fpr[23]);
OFFSET(THREAD_FPR24, loongarch_fpu, fpr[24]);
OFFSET(THREAD_FPR25, loongarch_fpu, fpr[25]);
OFFSET(THREAD_FPR26, loongarch_fpu, fpr[26]);
OFFSET(THREAD_FPR27, loongarch_fpu, fpr[27]);
OFFSET(THREAD_FPR28, loongarch_fpu, fpr[28]);
OFFSET(THREAD_FPR29, loongarch_fpu, fpr[29]);
OFFSET(THREAD_FPR30, loongarch_fpu, fpr[30]);
OFFSET(THREAD_FPR31, loongarch_fpu, fpr[31]);
OFFSET(THREAD_FCSR, loongarch_fpu, fcsr);
OFFSET(THREAD_FCC, loongarch_fpu, fcc);
BLANK();
}
void output_mm_defines(void)
{
COMMENT("Size of struct page");
DEFINE(STRUCT_PAGE_SIZE, sizeof(struct page));
BLANK();
COMMENT("Linux mm_struct offsets.");
OFFSET(MM_USERS, mm_struct, mm_users);
OFFSET(MM_PGD, mm_struct, pgd);
OFFSET(MM_CONTEXT, mm_struct, context);
BLANK();
DEFINE(_PGD_T_SIZE, sizeof(pgd_t));
DEFINE(_PMD_T_SIZE, sizeof(pmd_t));
DEFINE(_PTE_T_SIZE, sizeof(pte_t));
BLANK();
DEFINE(_PGD_T_LOG2, PGD_T_LOG2);
#ifndef __PAGETABLE_PMD_FOLDED
DEFINE(_PMD_T_LOG2, PMD_T_LOG2);
#endif
DEFINE(_PTE_T_LOG2, PTE_T_LOG2);
BLANK();
DEFINE(_PGD_ORDER, PGD_ORDER);
#ifndef __PAGETABLE_PMD_FOLDED
DEFINE(_PMD_ORDER, PMD_ORDER);
#endif
DEFINE(_PTE_ORDER, PTE_ORDER);
BLANK();
DEFINE(_PMD_SHIFT, PMD_SHIFT);
DEFINE(_PGDIR_SHIFT, PGDIR_SHIFT);
BLANK();
DEFINE(_PTRS_PER_PGD, PTRS_PER_PGD);
DEFINE(_PTRS_PER_PMD, PTRS_PER_PMD);
DEFINE(_PTRS_PER_PTE, PTRS_PER_PTE);
BLANK();
DEFINE(_PAGE_SHIFT, PAGE_SHIFT);
DEFINE(_PAGE_SIZE, PAGE_SIZE);
BLANK();
}
void output_sc_defines(void)
{
COMMENT("Linux sigcontext offsets.");
OFFSET(SC_REGS, sigcontext, sc_regs);
OFFSET(SC_PC, sigcontext, sc_pc);
BLANK();
}
void output_signal_defines(void)
{
COMMENT("Linux signal numbers.");
DEFINE(_SIGHUP, SIGHUP);
DEFINE(_SIGINT, SIGINT);
DEFINE(_SIGQUIT, SIGQUIT);
DEFINE(_SIGILL, SIGILL);
DEFINE(_SIGTRAP, SIGTRAP);
DEFINE(_SIGIOT, SIGIOT);
DEFINE(_SIGABRT, SIGABRT);
DEFINE(_SIGFPE, SIGFPE);
DEFINE(_SIGKILL, SIGKILL);
DEFINE(_SIGBUS, SIGBUS);
DEFINE(_SIGSEGV, SIGSEGV);
DEFINE(_SIGSYS, SIGSYS);
DEFINE(_SIGPIPE, SIGPIPE);
DEFINE(_SIGALRM, SIGALRM);
DEFINE(_SIGTERM, SIGTERM);
DEFINE(_SIGUSR1, SIGUSR1);
DEFINE(_SIGUSR2, SIGUSR2);
DEFINE(_SIGCHLD, SIGCHLD);
DEFINE(_SIGPWR, SIGPWR);
DEFINE(_SIGWINCH, SIGWINCH);
DEFINE(_SIGURG, SIGURG);
DEFINE(_SIGIO, SIGIO);
DEFINE(_SIGSTOP, SIGSTOP);
DEFINE(_SIGTSTP, SIGTSTP);
DEFINE(_SIGCONT, SIGCONT);
DEFINE(_SIGTTIN, SIGTTIN);
DEFINE(_SIGTTOU, SIGTTOU);
DEFINE(_SIGVTALRM, SIGVTALRM);
DEFINE(_SIGPROF, SIGPROF);
DEFINE(_SIGXCPU, SIGXCPU);
DEFINE(_SIGXFSZ, SIGXFSZ);
BLANK();
}
#ifdef CONFIG_SMP
void output_smpboot_defines(void)
{
COMMENT("Linux smp cpu boot offsets.");
OFFSET(CPU_BOOT_STACK, secondary_data, stack);
OFFSET(CPU_BOOT_TINFO, secondary_data, thread_info);
BLANK();
}
#endif
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