Commit 08e11256 authored by Peter Maydell's avatar Peter Maydell Committed by Riku Voipio
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ARM: linux-user: Expose iWMMXT registers to signal handlers 



Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarRiku Voipio <riku.voipio@nokia.com>
parent 5f9099d9

linux-user/signal.c

+37 −0
Original line number Diff line number Diff line
@@ -1130,7 +1130,21 @@ struct target_vfp_sigframe { 
    struct target_user_vfp_exc ufp_exc;

} __attribute__((__aligned__(8)));



struct target_iwmmxt_sigframe {

    abi_ulong magic;

    abi_ulong size;

    uint64_t regs[16];

    /* Note that not all the coprocessor control registers are stored here */

    uint32_t wcssf;

    uint32_t wcasf;

    uint32_t wcgr0;

    uint32_t wcgr1;

    uint32_t wcgr2;

    uint32_t wcgr3;

} __attribute__((__aligned__(8)));



#define TARGET_VFP_MAGIC 0x56465001

#define TARGET_IWMMXT_MAGIC 0x12ef842a



struct sigframe_v1

{
@@ -1292,6 +1306,25 @@ static abi_ulong *setup_sigframe_v2_vfp(abi_ulong *regspace, CPUState *env) 
    return (abi_ulong*)(vfpframe+1);

}



static abi_ulong *setup_sigframe_v2_iwmmxt(abi_ulong *regspace, CPUState *env)

{

    int i;

    struct target_iwmmxt_sigframe *iwmmxtframe;

    iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace;

    __put_user(TARGET_IWMMXT_MAGIC, &iwmmxtframe->magic);

    __put_user(sizeof(*iwmmxtframe), &iwmmxtframe->size);

    for (i = 0; i < 16; i++) {

        __put_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]);

    }

    __put_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf);

    __put_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf);

    __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0);

    __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1);

    __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2);

    __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3);

    return (abi_ulong*)(iwmmxtframe+1);

}



static void setup_sigframe_v2(struct target_ucontext_v2 *uc,

                              target_sigset_t *set, CPUState *env)

{
@@ -1314,6 +1347,10 @@ static void setup_sigframe_v2(struct target_ucontext_v2 *uc, 
    if (arm_feature(env, ARM_FEATURE_VFP)) {

        regspace = setup_sigframe_v2_vfp(regspace, env);

    }

    if (arm_feature(env, ARM_FEATURE_IWMMXT)) {

        regspace = setup_sigframe_v2_iwmmxt(regspace, env);

    }



    /* Write terminating magic word */

    __put_user(0, regspace);