fridtjof/qemu-cr16
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

linux-user/loongarch64: Expand target_elf_gregset_t

Browse source 
Make use of the fact that target_elf_gregset_t is a proper structure.
Note that the kernel's uses an array, and then it has a bunch of defines
to create symbolic offsets.  Modulo some reserved fields, which we do
not implement here, this is the same layout as struct user_pt_regs.

Drop ELF_NREG, target_elf_greg_t, and tswapreg.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2025-08-28 11:37:08 +10:00
parent 9308223c71
commit 190cc717f8
2 changed files with 7 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

14
linux-user/loongarch64/elfload.c
View file

@ -65,20 +65,14 @@ const char *get_elf_platform(CPUState *cs)
#define tswapreg(ptr) tswapal(ptr)
enum {
TARGET_EF_R0 = 0,
TARGET_EF_CSR_ERA = TARGET_EF_R0 + 33,
TARGET_EF_CSR_BADV = TARGET_EF_R0 + 34,
};
void elf_core_copy_regs(target_elf_gregset_t *r, const CPULoongArchState *env)
{
r->regs[TARGET_EF_R0] = 0;
r->pt.regs[0] = 0;
for (int i = 1; i < ARRAY_SIZE(env->gpr); i++) {
r->regs[TARGET_EF_R0 + i] = tswapreg(env->gpr[i]);
r->pt.regs[i] = tswapreg(env->gpr[i]);
}
r->regs[TARGET_EF_CSR_ERA] = tswapreg(env->pc);
r->regs[TARGET_EF_CSR_BADV] = tswapreg(env->CSR_BADV);
r->pt.csr_era = tswapreg(env->pc);
r->pt.csr_badv = tswapreg(env->CSR_BADV);
}

7
linux-user/loongarch64/target_elf.h
View file

@ -6,16 +6,15 @@
#ifndef LOONGARCH_TARGET_ELF_H
#define LOONGARCH_TARGET_ELF_H
#include "target_ptrace.h"
#define HAVE_ELF_HWCAP 1
#define HAVE_ELF_PLATFORM 1
#define HAVE_ELF_CORE_DUMP 1
typedef abi_ulong target_elf_greg_t;
/* See linux kernel: arch/loongarch/include/asm/elf.h */
#define ELF_NREG 45
typedef struct target_elf_gregset_t {
target_elf_greg_t regs[ELF_NREG];
struct target_user_pt_regs pt;
} target_elf_gregset_t;
#endif