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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>
This commit is contained in:
Ilya Leoshkevich 2021-04-13 22:56:08 +02:00 committed by Laurent Vivier
parent 5f779a3a26
commit 4a1e8931ec
1 changed files with 33 additions and 0 deletions
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33
linux-user/elfload.c
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@ -1375,6 +1375,39 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
regs->gprs[15] = infop->start_stack;
}
/* See linux kernel: arch/s390/include/uapi/asm/ptrace.h (s390_regs). */
#define ELF_NREG 27
typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
enum {
TARGET_REG_PSWM = 0,
TARGET_REG_PSWA = 1,
TARGET_REG_GPRS = 2,
TARGET_REG_ARS = 18,
TARGET_REG_ORIG_R2 = 26,
};
static void elf_core_copy_regs(target_elf_gregset_t *regs,
const CPUS390XState *env)
{
int i;
uint32_t *aregs;
(*regs)[TARGET_REG_PSWM] = tswapreg(env->psw.mask);
(*regs)[TARGET_REG_PSWA] = tswapreg(env->psw.addr);
for (i = 0; i < 16; i++) {
(*regs)[TARGET_REG_GPRS + i] = tswapreg(env->regs[i]);
}
aregs = (uint32_t *)&((*regs)[TARGET_REG_ARS]);
for (i = 0; i < 16; i++) {
aregs[i] = tswap32(env->aregs[i]);
}
(*regs)[TARGET_REG_ORIG_R2] = 0;
}
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#endif /* TARGET_S390X */
#ifdef TARGET_RISCV