| Message ID | 20240517203054.880861-2-dbarboza@ventanamicro.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | riscv, gdbstub.c: fix reg_width in ricsv_gen_dynamic_vector_feature() | expand |
On 2024/05/18 5:30, Daniel Henrique Barboza wrote: > Commit 33a24910ae changed 'reg_width' to use 'vlenb', i.e. vector length > in bytes, when in this context we want 'reg_width' as the length in > bits. > > Fix 'reg_width' back to the value in bits like 7cb59921c05a > ("target/riscv/gdbstub.c: use 'vlenb' instead of shifting 'vlen'") set > beforehand. > > While we're at it, rename 'reg_width' to 'bitsize' to provide a bit more > clarity about what the variable represents. 'bitsize' is also used in > riscv_gen_dynamic_csr_feature() with the same purpose, i.e. as an input to > gdb_feature_builder_append_reg(). > > Cc: Akihiko Odaki <akihiko.odaki@daynix.com> > Cc: Alex Bennée <alex.bennee@linaro.org> > Reported-by: Robin Dapp <rdapp.gcc@gmail.com> > Fixes: 33a24910ae ("target/riscv: Use GDBFeature for dynamic XML") > Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com> > Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com> > Acked-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
On Sat, May 18, 2024 at 6:32 AM Daniel Henrique Barboza <dbarboza@ventanamicro.com> wrote: > > Commit 33a24910ae changed 'reg_width' to use 'vlenb', i.e. vector length > in bytes, when in this context we want 'reg_width' as the length in > bits. > > Fix 'reg_width' back to the value in bits like 7cb59921c05a > ("target/riscv/gdbstub.c: use 'vlenb' instead of shifting 'vlen'") set > beforehand. > > While we're at it, rename 'reg_width' to 'bitsize' to provide a bit more > clarity about what the variable represents. 'bitsize' is also used in > riscv_gen_dynamic_csr_feature() with the same purpose, i.e. as an input to > gdb_feature_builder_append_reg(). > > Cc: Akihiko Odaki <akihiko.odaki@daynix.com> > Cc: Alex Bennée <alex.bennee@linaro.org> > Reported-by: Robin Dapp <rdapp.gcc@gmail.com> > Fixes: 33a24910ae ("target/riscv: Use GDBFeature for dynamic XML") > Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com> > Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com> > Acked-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Alistair > --- > target/riscv/gdbstub.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/target/riscv/gdbstub.c b/target/riscv/gdbstub.c > index d0cc5762c2..c07df972f1 100644 > --- a/target/riscv/gdbstub.c > +++ b/target/riscv/gdbstub.c > @@ -288,7 +288,7 @@ static GDBFeature *riscv_gen_dynamic_csr_feature(CPUState *cs, int base_reg) > static GDBFeature *ricsv_gen_dynamic_vector_feature(CPUState *cs, int base_reg) > { > RISCVCPU *cpu = RISCV_CPU(cs); > - int reg_width = cpu->cfg.vlenb; > + int bitsize = cpu->cfg.vlenb << 3; > GDBFeatureBuilder builder; > int i; > > @@ -298,7 +298,7 @@ static GDBFeature *ricsv_gen_dynamic_vector_feature(CPUState *cs, int base_reg) > > /* First define types and totals in a whole VL */ > for (i = 0; i < ARRAY_SIZE(vec_lanes); i++) { > - int count = reg_width / vec_lanes[i].size; > + int count = bitsize / vec_lanes[i].size; > gdb_feature_builder_append_tag( > &builder, "<vector id=\"%s\" type=\"%s\" count=\"%d\"/>", > vec_lanes[i].id, vec_lanes[i].gdb_type, count); > @@ -316,7 +316,7 @@ static GDBFeature *ricsv_gen_dynamic_vector_feature(CPUState *cs, int base_reg) > /* Define vector registers */ > for (i = 0; i < 32; i++) { > gdb_feature_builder_append_reg(&builder, g_strdup_printf("v%d", i), > - reg_width, i, "riscv_vector", "vector"); > + bitsize, i, "riscv_vector", "vector"); > } > > gdb_feature_builder_end(&builder); > -- > 2.44.0 > >
diff --git a/target/riscv/gdbstub.c b/target/riscv/gdbstub.c index d0cc5762c2..c07df972f1 100644 --- a/target/riscv/gdbstub.c +++ b/target/riscv/gdbstub.c @@ -288,7 +288,7 @@ static GDBFeature *riscv_gen_dynamic_csr_feature(CPUState *cs, int base_reg) static GDBFeature *ricsv_gen_dynamic_vector_feature(CPUState *cs, int base_reg) { RISCVCPU *cpu = RISCV_CPU(cs); - int reg_width = cpu->cfg.vlenb; + int bitsize = cpu->cfg.vlenb << 3; GDBFeatureBuilder builder; int i; @@ -298,7 +298,7 @@ static GDBFeature *ricsv_gen_dynamic_vector_feature(CPUState *cs, int base_reg) /* First define types and totals in a whole VL */ for (i = 0; i < ARRAY_SIZE(vec_lanes); i++) { - int count = reg_width / vec_lanes[i].size; + int count = bitsize / vec_lanes[i].size; gdb_feature_builder_append_tag( &builder, "<vector id=\"%s\" type=\"%s\" count=\"%d\"/>", vec_lanes[i].id, vec_lanes[i].gdb_type, count); @@ -316,7 +316,7 @@ static GDBFeature *ricsv_gen_dynamic_vector_feature(CPUState *cs, int base_reg) /* Define vector registers */ for (i = 0; i < 32; i++) { gdb_feature_builder_append_reg(&builder, g_strdup_printf("v%d", i), - reg_width, i, "riscv_vector", "vector"); + bitsize, i, "riscv_vector", "vector"); } gdb_feature_builder_end(&builder);
Commit 33a24910ae changed 'reg_width' to use 'vlenb', i.e. vector length in bytes, when in this context we want 'reg_width' as the length in bits. Fix 'reg_width' back to the value in bits like 7cb59921c05a ("target/riscv/gdbstub.c: use 'vlenb' instead of shifting 'vlen'") set beforehand. While we're at it, rename 'reg_width' to 'bitsize' to provide a bit more clarity about what the variable represents. 'bitsize' is also used in riscv_gen_dynamic_csr_feature() with the same purpose, i.e. as an input to gdb_feature_builder_append_reg(). Cc: Akihiko Odaki <akihiko.odaki@daynix.com> Cc: Alex Bennée <alex.bennee@linaro.org> Reported-by: Robin Dapp <rdapp.gcc@gmail.com> Fixes: 33a24910ae ("target/riscv: Use GDBFeature for dynamic XML") Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com> Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com> Acked-by: Alex Bennée <alex.bennee@linaro.org> --- target/riscv/gdbstub.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)