| Message ID | 20230117230415.354239-1-richard.henderson@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | tcg/riscv: Use tcg_pcrel_diff in tcg_out_ldst | expand |
On Wed, Jan 18, 2023 at 9:05 AM Richard Henderson <richard.henderson@linaro.org> wrote: > > We failed to update this with the w^x split, so misses the fact > that true pc-relative offsets are usually small. > > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Alistair > --- > tcg/riscv/tcg-target.c.inc | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tcg/riscv/tcg-target.c.inc b/tcg/riscv/tcg-target.c.inc > index fc0edd811f..01cb67ef7b 100644 > --- a/tcg/riscv/tcg-target.c.inc > +++ b/tcg/riscv/tcg-target.c.inc > @@ -599,7 +599,7 @@ static void tcg_out_ldst(TCGContext *s, RISCVInsn opc, TCGReg data, > intptr_t imm12 = sextreg(offset, 0, 12); > > if (offset != imm12) { > - intptr_t diff = offset - (uintptr_t)s->code_ptr; > + intptr_t diff = tcg_pcrel_diff(s, (void *)offset); > > if (addr == TCG_REG_ZERO && diff == (int32_t)diff) { > imm12 = sextreg(diff, 0, 12); > -- > 2.34.1 > >
On Wed, Jan 18, 2023 at 9:05 AM Richard Henderson <richard.henderson@linaro.org> wrote: > > We failed to update this with the w^x split, so misses the fact > that true pc-relative offsets are usually small. > > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Thanks! Applied to riscv-to-apply.next Alistair > --- > tcg/riscv/tcg-target.c.inc | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tcg/riscv/tcg-target.c.inc b/tcg/riscv/tcg-target.c.inc > index fc0edd811f..01cb67ef7b 100644 > --- a/tcg/riscv/tcg-target.c.inc > +++ b/tcg/riscv/tcg-target.c.inc > @@ -599,7 +599,7 @@ static void tcg_out_ldst(TCGContext *s, RISCVInsn opc, TCGReg data, > intptr_t imm12 = sextreg(offset, 0, 12); > > if (offset != imm12) { > - intptr_t diff = offset - (uintptr_t)s->code_ptr; > + intptr_t diff = tcg_pcrel_diff(s, (void *)offset); > > if (addr == TCG_REG_ZERO && diff == (int32_t)diff) { > imm12 = sextreg(diff, 0, 12); > -- > 2.34.1 > >
diff --git a/tcg/riscv/tcg-target.c.inc b/tcg/riscv/tcg-target.c.inc index fc0edd811f..01cb67ef7b 100644 --- a/tcg/riscv/tcg-target.c.inc +++ b/tcg/riscv/tcg-target.c.inc @@ -599,7 +599,7 @@ static void tcg_out_ldst(TCGContext *s, RISCVInsn opc, TCGReg data, intptr_t imm12 = sextreg(offset, 0, 12); if (offset != imm12) { - intptr_t diff = offset - (uintptr_t)s->code_ptr; + intptr_t diff = tcg_pcrel_diff(s, (void *)offset); if (addr == TCG_REG_ZERO && diff == (int32_t)diff) { imm12 = sextreg(diff, 0, 12);
We failed to update this with the w^x split, so misses the fact that true pc-relative offsets are usually small. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- tcg/riscv/tcg-target.c.inc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)