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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2017-03-08 12:41:14 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2017-07-14 12:29:49 +0200 |
| commit | 86158a2a2b81f075c84d0b95c6d72b98dbf1dc61 (patch) | |
| tree | 7e740216ee2036ebccbdd35315f8e2f36ef727e7 | |
| parent | 21a106904b5336b6ea60c22a95feb7d61c664d7f (diff) | |
s390x/gdb: add gs registers
Let's provide the guarded storage registers via gdb server.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| -rwxr-xr-x | configure | 2 | ||||
| -rw-r--r-- | gdb-xml/s390-gs.xml | 14 | ||||
| -rw-r--r-- | target/s390x/gdbstub.c | 24 |
3 files changed, 39 insertions, 1 deletions
@@ -6231,7 +6231,7 @@ case "$target_name" in echo "TARGET_ABI32=y" >> $config_target_mak ;; s390x) - gdb_xml_files="s390x-core64.xml s390-acr.xml s390-fpr.xml s390-vx.xml s390-cr.xml s390-virt.xml" + gdb_xml_files="s390x-core64.xml s390-acr.xml s390-fpr.xml s390-vx.xml s390-cr.xml s390-virt.xml s390-gs.xml" ;; tilegx) ;; diff --git a/gdb-xml/s390-gs.xml b/gdb-xml/s390-gs.xml new file mode 100644 index 0000000000..0487d31c07 --- /dev/null +++ b/gdb-xml/s390-gs.xml @@ -0,0 +1,14 @@ +<?xml version="1.0"?> +<!-- Copyright 2017 IBM Corp. + + This work is licensed under the terms of the GNU GPL, version 2 or + (at your option) any later version. See the COPYING file in the + top-level directory. --> + +<!DOCTYPE feature SYSTEM "gdb-target.dtd"> +<feature name="org.gnu.gdb.s390.gs"> + <reg name="gs_reserved" bitsize="64" type="uint64" group="system"/> + <reg name="gsd" bitsize="64" type="uint64" group="system"/> + <reg name="gssm" bitsize="64" type="uint64" group="system"/> + <reg name="gsepla" bitsize="64" type="data_ptr" group="system"/> +</feature> diff --git a/target/s390x/gdbstub.c b/target/s390x/gdbstub.c index 94ab74d58f..a7efafee9f 100644 --- a/target/s390x/gdbstub.c +++ b/target/s390x/gdbstub.c @@ -286,6 +286,26 @@ static int cpu_write_virt_reg(CPUS390XState *env, uint8_t *mem_buf, int n) } #endif +/* the values represent the positions in s390-gs.xml */ +#define S390_GS_RESERVED_REGNUM 0 +#define S390_GS_GSD_REGNUM 1 +#define S390_GS_GSSM_REGNUM 2 +#define S390_GS_GSEPLA_REGNUM 3 +/* total number of registers in s390-gs.xml */ +#define S390_NUM_GS_REGS 4 + +static int cpu_read_gs_reg(CPUS390XState *env, uint8_t *mem_buf, int n) +{ + return gdb_get_regl(mem_buf, env->gscb[n]); +} + +static int cpu_write_gs_reg(CPUS390XState *env, uint8_t *mem_buf, int n) +{ + env->gscb[n] = ldtul_p(mem_buf); + cpu_synchronize_post_init(ENV_GET_CPU(env)); + return 8; +} + void s390_cpu_gdb_init(CPUState *cs) { gdb_register_coprocessor(cs, cpu_read_ac_reg, @@ -300,6 +320,10 @@ void s390_cpu_gdb_init(CPUState *cs) cpu_write_vreg, S390_NUM_VREGS, "s390-vx.xml", 0); + gdb_register_coprocessor(cs, cpu_read_gs_reg, + cpu_write_gs_reg, + S390_NUM_GS_REGS, "s390-gs.xml", 0); + #ifndef CONFIG_USER_ONLY gdb_register_coprocessor(cs, cpu_read_c_reg, cpu_write_c_reg, |