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[Qemu-devel] [PULL 05/10] s390x: gdb updates for vector registers
From: |
Cornelia Huck |
Subject: |
[Qemu-devel] [PULL 05/10] s390x: gdb updates for vector registers |
Date: |
Thu, 28 May 2015 10:43:00 +0200 |
From: Eric Farman <address@hidden>
gdb allows registers to be displayed/modified, and is being updated
to account for the new vector registers. Mirror these changes in
the gdb stub in qemu so that this can be performed when gdb is
attached to the qemu gdbserver.
Signed-off-by: Eric Farman <address@hidden>
Reviewed-by: David Hildenbrand <address@hidden>
Signed-off-by: Cornelia Huck <address@hidden>
---
configure | 2 +-
target-s390x/gdbstub.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 47 insertions(+), 1 deletion(-)
diff --git a/configure b/configure
index 9852aef..b707429 100755
--- a/configure
+++ b/configure
@@ -5292,7 +5292,7 @@ case "$target_name" in
echo "TARGET_ABI32=y" >> $config_target_mak
;;
s390x)
- gdb_xml_files="s390x-core64.xml s390-acr.xml s390-fpr.xml"
+ gdb_xml_files="s390x-core64.xml s390-acr.xml s390-fpr.xml s390-vx.xml"
;;
tricore)
;;
diff --git a/target-s390x/gdbstub.c b/target-s390x/gdbstub.c
index 40bdfe7..ddc14a6 100644
--- a/target-s390x/gdbstub.c
+++ b/target-s390x/gdbstub.c
@@ -131,6 +131,48 @@ static int cpu_write_fp_reg(CPUS390XState *env, uint8_t
*mem_buf, int n)
}
}
+/* the values represent the positions in s390-vx.xml */
+#define S390_V0L_REGNUM 0
+#define S390_V15L_REGNUM 15
+#define S390_V16_REGNUM 16
+#define S390_V31_REGNUM 31
+/* total number of registers in s390-vx.xml */
+#define S390_NUM_VREGS 32
+
+static int cpu_read_vreg(CPUS390XState *env, uint8_t *mem_buf, int n)
+{
+ int ret;
+
+ switch (n) {
+ case S390_V0L_REGNUM ... S390_V15L_REGNUM:
+ ret = gdb_get_reg64(mem_buf, env->vregs[n][1].ll);
+ break;
+ case S390_V16_REGNUM ... S390_V31_REGNUM:
+ ret = gdb_get_reg64(mem_buf, env->vregs[n][0].ll);
+ ret += gdb_get_reg64(mem_buf + 8, env->vregs[n][1].ll);
+ break;
+ default:
+ ret = 0;
+ }
+
+ return ret;
+}
+
+static int cpu_write_vreg(CPUS390XState *env, uint8_t *mem_buf, int n)
+{
+ switch (n) {
+ case S390_V0L_REGNUM ... S390_V15L_REGNUM:
+ env->vregs[n][1].ll = ldtul_p(mem_buf + 8);
+ return 8;
+ case S390_V16_REGNUM ... S390_V31_REGNUM:
+ env->vregs[n][0].ll = ldtul_p(mem_buf);
+ env->vregs[n][1].ll = ldtul_p(mem_buf + 8);
+ return 16;
+ default:
+ return 0;
+ }
+}
+
void s390_cpu_gdb_init(CPUState *cs)
{
gdb_register_coprocessor(cs, cpu_read_ac_reg,
@@ -140,4 +182,8 @@ void s390_cpu_gdb_init(CPUState *cs)
gdb_register_coprocessor(cs, cpu_read_fp_reg,
cpu_write_fp_reg,
S390_NUM_FP_REGS, "s390-fpr.xml", 0);
+
+ gdb_register_coprocessor(cs, cpu_read_vreg,
+ cpu_write_vreg,
+ S390_NUM_VREGS, "s390-vx.xml", 0);
}
--
2.4.2
- [Qemu-devel] [PULL 00/10] s390x: SIMD support, Cornelia Huck, 2015/05/28
- [Qemu-devel] [PULL 03/10] s390x: Store Additional Status SIGP order, Cornelia Huck, 2015/05/28
- [Qemu-devel] [PULL 05/10] s390x: gdb updates for vector registers,
Cornelia Huck <=
- [Qemu-devel] [PULL 07/10] linux/elf.h update, Cornelia Huck, 2015/05/28
- [Qemu-devel] [PULL 06/10] s390x: Add vector registers to HMP output, Cornelia Huck, 2015/05/28
- [Qemu-devel] [PULL 04/10] gdb-xml: Include XML for s390 vector registers, Cornelia Huck, 2015/05/28
- [Qemu-devel] [PULL 10/10] s390x: Enable vector processing capability, Cornelia Huck, 2015/05/28
- [Qemu-devel] [PULL 09/10] s390x: Migrate vector registers, Cornelia Huck, 2015/05/28
- [Qemu-devel] [PULL 02/10] s390x: Vector Register IOCTLs, Cornelia Huck, 2015/05/28
- [Qemu-devel] [PULL 01/10] s390x: Common access to floating point registers, Cornelia Huck, 2015/05/28
- [Qemu-devel] [PULL 08/10] s390x: Add vector registers to ELF dump, Cornelia Huck, 2015/05/28
- Re: [Qemu-devel] [PULL 00/10] s390x: SIMD support, Peter Maydell, 2015/05/28