Commit 3ceeb293 authored by Eric Farman's avatar Eric Farman Committed by Cornelia Huck
Browse files

s390x: Add vector registers to ELF dump 



Create ELF notes for the vector registers where applicable, so that
their contents can be examined by utilities such as crash or readelf.

Signed-off-by: default avatarEric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: default avatarDavid Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
parent eeef559a

target-s390x/arch_dump.c

+39 −0
Original line number Diff line number Diff line
@@ -44,6 +44,18 @@ struct S390xElfFpregsetStruct { 


typedef struct S390xElfFpregsetStruct S390xElfFpregset;



struct S390xElfVregsLoStruct {

    uint64_t vregs[16];

} QEMU_PACKED;



typedef struct S390xElfVregsLoStruct S390xElfVregsLo;



struct S390xElfVregsHiStruct {

    uint64_t vregs[16][2];

} QEMU_PACKED;



typedef struct S390xElfVregsHiStruct S390xElfVregsHi;



typedef struct noteStruct {

    Elf64_Nhdr hdr;

    char name[5];
@@ -51,6 +63,8 @@ typedef struct noteStruct { 
    union {

        S390xElfPrstatus prstatus;

        S390xElfFpregset fpregset;

        S390xElfVregsLo vregslo;

        S390xElfVregsHi vregshi;

        uint32_t prefix;

        uint64_t timer;

        uint64_t todcmp;
@@ -87,6 +101,29 @@ static void s390x_write_elf64_fpregset(Note *note, S390CPU *cpu) 
    }

}



static void s390x_write_elf64_vregslo(Note *note, S390CPU *cpu)

{

    int i;



    note->hdr.n_type = cpu_to_be32(NT_S390_VXRS_LOW);

    for (i = 0; i <= 15; i++) {

        note->contents.vregslo.vregs[i] = cpu_to_be64(cpu->env.vregs[i][1].ll);

    }

}



static void s390x_write_elf64_vregshi(Note *note, S390CPU *cpu)

{

    int i;

    S390xElfVregsHi *temp_vregshi;



    temp_vregshi = &note->contents.vregshi;



    note->hdr.n_type = cpu_to_be32(NT_S390_VXRS_HIGH);

    for (i = 0; i <= 15; i++) {

        temp_vregshi->vregs[i][0] = cpu_to_be64(cpu->env.vregs[i + 16][0].ll);

        temp_vregshi->vregs[i][1] = cpu_to_be64(cpu->env.vregs[i + 16][1].ll);

    }

}



static void s390x_write_elf64_timer(Note *note, S390CPU *cpu)

{
@@ -135,6 +172,8 @@ static const struct NoteFuncDescStruct { 
    {sizeof(((Note *)0)->contents.timer),    s390x_write_elf64_timer},

    {sizeof(((Note *)0)->contents.todcmp),   s390x_write_elf64_todcmp},

    {sizeof(((Note *)0)->contents.todpreg),  s390x_write_elf64_todpreg},

    {sizeof(((Note *)0)->contents.vregslo),  s390x_write_elf64_vregslo},

    {sizeof(((Note *)0)->contents.vregshi),  s390x_write_elf64_vregshi},

    { 0, NULL}

};