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linux-user: Create do_init_main_thread

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Provide a unified function to initialize the main thread.
Keep target_pt_regs isolated to this function.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson
2025-07-28 10:00:36 -10:00
parent d8329660b2
commit 1f2f4c0fbc
4 changed files with 12 additions and 16 deletions
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7
linux-user/elfload.c
View File

@ -3619,7 +3619,10 @@ static int elf_core_dump(int signr, const CPUArchState *env)
}
#endif /* USE_ELF_CORE_DUMP */
void do_init_thread(struct target_pt_regs *regs, struct image_info *infop)
void do_init_main_thread(CPUState *cs, struct image_info *infop)
{
init_thread(regs, infop);
target_pt_regs regs = { };
init_thread(&regs, infop);
target_cpu_copy_regs(cpu_env(cs), &regs);
}

6
linux-user/linuxload.c
View File

@ -139,8 +139,7 @@ abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
}
int loader_exec(int fdexec, const char *filename, char **argv, char **envp,
struct target_pt_regs *regs, struct image_info *infop,
struct linux_binprm *bprm)
struct image_info *infop, struct linux_binprm *bprm)
{
int retval;
@ -175,8 +174,7 @@ int loader_exec(int fdexec, const char *filename, char **argv, char **envp,
return retval;
}
/* Success. Initialize important registers. */
do_init_thread(regs, infop);
/* Success. */
return 0;
}

5
linux-user/loader.h
View File

@ -82,12 +82,11 @@ struct linux_binprm {
int (*core_dump)(int, const CPUArchState *); /* coredump routine */
};
void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
void do_init_main_thread(CPUState *cs, struct image_info *infop);
abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
abi_ulong stringp, int push_ptr);
int loader_exec(int fdexec, const char *filename, char **argv, char **envp,
struct target_pt_regs *regs, struct image_info *infop,
struct linux_binprm *);
struct image_info *infop, struct linux_binprm *);
uint32_t get_elf_eflags(int fd);
int load_elf_binary(struct linux_binprm *bprm, struct image_info *info);

10
linux-user/main.c
View File

@ -696,7 +696,6 @@ static int parse_args(int argc, char **argv)
int main(int argc, char **argv, char **envp)
{
struct target_pt_regs regs1, *regs = &regs1;
struct image_info info1, *info = &info1;
struct linux_binprm bprm;
TaskState *ts;
@ -762,9 +761,6 @@ int main(int argc, char **argv, char **envp)
trace_init_file();
qemu_plugin_load_list(&plugins, &error_fatal);
/* Zero out regs */
memset(regs, 0, sizeof(struct target_pt_regs));
/* Zero out image_info */
memset(info, 0, sizeof(struct image_info));
@ -988,8 +984,8 @@ int main(int argc, char **argv, char **envp)
fd_trans_init();
ret = loader_exec(execfd, exec_path, target_argv, target_environ, regs,
info, &bprm);
ret = loader_exec(execfd, exec_path, target_argv, target_environ,
info, &bprm);
if (ret != 0) {
printf("Error while loading %s: %s\n", exec_path, strerror(-ret));
_exit(EXIT_FAILURE);
@ -1041,7 +1037,7 @@ int main(int argc, char **argv, char **envp)
the real value of GUEST_BASE into account. */
tcg_prologue_init();
target_cpu_copy_regs(env, regs);
do_init_main_thread(cpu, info);
if (gdbstub) {
gdbserver_start(gdbstub, &error_fatal);