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linux-user: arm: Remove ARM_cpsr and similar #defines

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The #defines of ARM_cpsr and friends in linux-user/arm/target-syscall.h
can clash with versions in the system headers if building on an
ARM or AArch64 build (though this seems to be dependent on the version
of the system headers). The QEMU defines are not very useful (it's
not clear that they're intended for use with the target_pt_regs struct
rather than (say) the CPUARMState structure) and we only use them in one
function in elfload.c anyway. So just remove the #defines and directly
access regs->uregs[].

Reported-by: Christopher Covington <cov@codeaurora.org>
Tested-by: Christopher Covington <cov@codeaurora.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This commit is contained in:
Peter Maydell 2016-03-03 12:11:18 +00:00 committed by Riku Voipio
parent fd6f7798ac
commit 167e4cdc29
2 changed files with 11 additions and 28 deletions
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20
linux-user/arm/target_syscall.h
View File

@ -4,29 +4,11 @@
/* this struct defines the way the registers are stored on the
stack during a system call. */
/* uregs[0..15] are r0 to r15; uregs[16] is CPSR; uregs[17] is ORIG_r0 */
struct target_pt_regs {
abi_long uregs[18];
};
#define ARM_cpsr uregs[16]
#define ARM_pc uregs[15]
#define ARM_lr uregs[14]
#define ARM_sp uregs[13]
#define ARM_ip uregs[12]
#define ARM_fp uregs[11]
#define ARM_r10 uregs[10]
#define ARM_r9 uregs[9]
#define ARM_r8 uregs[8]
#define ARM_r7 uregs[7]
#define ARM_r6 uregs[6]
#define ARM_r5 uregs[5]
#define ARM_r4 uregs[4]
#define ARM_r3 uregs[3]
#define ARM_r2 uregs[2]
#define ARM_r1 uregs[1]
#define ARM_r0 uregs[0]
#define ARM_ORIG_r0 uregs[17]
#define ARM_SYSCALL_BASE 0x900000
#define ARM_THUMB_SYSCALL 0

19
linux-user/elfload.c
View File

@ -274,19 +274,20 @@ static inline void init_thread(struct target_pt_regs *regs,
abi_long stack = infop->start_stack;
memset(regs, 0, sizeof(*regs));
regs->ARM_cpsr = 0x10;
if (infop->entry & 1)
regs->ARM_cpsr |= CPSR_T;
regs->ARM_pc = infop->entry & 0xfffffffe;
regs->ARM_sp = infop->start_stack;
regs->uregs[16] = ARM_CPU_MODE_USR;
if (infop->entry & 1) {
regs->uregs[16] |= CPSR_T;
}
regs->uregs[15] = infop->entry & 0xfffffffe;
regs->uregs[13] = infop->start_stack;
/* FIXME - what to for failure of get_user()? */
get_user_ual(regs->ARM_r2, stack + 8); /* envp */
get_user_ual(regs->ARM_r1, stack + 4); /* envp */
get_user_ual(regs->uregs[2], stack + 8); /* envp */
get_user_ual(regs->uregs[1], stack + 4); /* envp */
/* XXX: it seems that r0 is zeroed after ! */
regs->ARM_r0 = 0;
regs->uregs[0] = 0;
/* For uClinux PIC binaries. */
/* XXX: Linux does this only on ARM with no MMU (do we care ?) */
regs->ARM_r10 = infop->start_data;
regs->uregs[10] = infop->start_data;
}
#define ELF_NREG 18