linux-user/elfload: add s390x core dumping support
Provide the following definitions required by the common code: * ELF_NREG: with the value of sizeof(s390_regs) / sizeof(long). * target_elf_gregset_t: define it like all the other arches do. * elf_core_copy_regs(): similar to kernel's s390_regs_get(). * USE_ELF_CORE_DUMP. * ELF_EXEC_PAGESIZE. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-Id: <20210413205608.22587-1-iii@linux.ibm.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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@ -1375,6 +1375,39 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
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regs->gprs[15] = infop->start_stack;
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}
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/* See linux kernel: arch/s390/include/uapi/asm/ptrace.h (s390_regs). */
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#define ELF_NREG 27
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typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
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enum {
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TARGET_REG_PSWM = 0,
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TARGET_REG_PSWA = 1,
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TARGET_REG_GPRS = 2,
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TARGET_REG_ARS = 18,
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TARGET_REG_ORIG_R2 = 26,
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};
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static void elf_core_copy_regs(target_elf_gregset_t *regs,
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const CPUS390XState *env)
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{
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int i;
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uint32_t *aregs;
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(*regs)[TARGET_REG_PSWM] = tswapreg(env->psw.mask);
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(*regs)[TARGET_REG_PSWA] = tswapreg(env->psw.addr);
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for (i = 0; i < 16; i++) {
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(*regs)[TARGET_REG_GPRS + i] = tswapreg(env->regs[i]);
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}
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aregs = (uint32_t *)&((*regs)[TARGET_REG_ARS]);
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for (i = 0; i < 16; i++) {
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aregs[i] = tswap32(env->aregs[i]);
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}
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(*regs)[TARGET_REG_ORIG_R2] = 0;
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}
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#define USE_ELF_CORE_DUMP
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#define ELF_EXEC_PAGESIZE 4096
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#endif /* TARGET_S390X */
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#ifdef TARGET_RISCV
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