diff options
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/sparc64/fpu/fpu_explode.c | 18 | ||||
| -rw-r--r-- | lib/libc/sparc64/fpu/fpu_qp.c | 16 |
2 files changed, 24 insertions, 10 deletions
diff --git a/lib/libc/sparc64/fpu/fpu_explode.c b/lib/libc/sparc64/fpu/fpu_explode.c index 7c1f3eb..09f8908 100644 --- a/lib/libc/sparc64/fpu/fpu_explode.c +++ b/lib/libc/sparc64/fpu/fpu_explode.c @@ -101,7 +101,14 @@ __fpu_itof(fp, i) * fpu_norm()'s handling of `supernormals'; see fpu_subr.c. */ fp->fp_exp = FP_LG; - fp->fp_mant[0] = (int)i < 0 ? -i : i; + /* + * The sign bit decides whether i should be interpreted as + * a signed or unsigned entity. + */ + if (fp->fp_sign && (int)i < 0) + fp->fp_mant[0] = -i; + else + fp->fp_mant[0] = i; fp->fp_mant[1] = 0; fp->fp_mant[2] = 0; fp->fp_mant[3] = 0; @@ -127,7 +134,14 @@ __fpu_xtof(fp, i) * fpu_norm()'s handling of `supernormals'; see fpu_subr.c. */ fp->fp_exp = FP_LG2; - *((int64_t*)fp->fp_mant) = (int64_t)i < 0 ? -i : i; + /* + * The sign bit decides whether i should be interpreted as + * a signed or unsigned entity. + */ + if (fp->fp_sign && (int64_t)i < 0) + *((int64_t*)fp->fp_mant) = -i; + else + *((int64_t*)fp->fp_mant) = i; fp->fp_mant[2] = 0; fp->fp_mant[3] = 0; __fpu_norm(fp); diff --git a/lib/libc/sparc64/fpu/fpu_qp.c b/lib/libc/sparc64/fpu/fpu_qp.c index 9e3bedc..e730eba 100644 --- a/lib/libc/sparc64/fpu/fpu_qp.c +++ b/lib/libc/sparc64/fpu/fpu_qp.c @@ -51,7 +51,7 @@ _Qp_ ## op(u_int *c, u_int *a, u_int *b) \ c[0] = __fpu_ftoq(&fe, r, c); \ } -#define _QP_TTOQ(qname, fname, ntype, atype, ...) \ +#define _QP_TTOQ(qname, fname, ntype, signpos, atype, ...) \ void _Qp_ ## qname ## toq(u_int *c, ntype n); \ void \ _Qp_ ## qname ## toq(u_int *c, ntype n) \ @@ -59,7 +59,7 @@ _Qp_ ## qname ## toq(u_int *c, ntype n) \ struct fpemu fe; \ union { atype a[2]; ntype n; } u = { .n = n }; \ __asm __volatile("stx %%fsr, %0" : "=m" (fe.fe_fsr) :); \ - fe.fe_f1.fp_sign = u.a[0] >> 31; \ + fe.fe_f1.fp_sign = (signpos >= 0) ? u.a[0] >> signpos : 0; \ fe.fe_f1.fp_sticky = 0; \ fe.fe_f1.fp_class = __fpu_ ## fname ## tof(&fe.fe_f1, __VA_ARGS__); \ c[0] = __fpu_ftoq(&fe, &fe.fe_f1, c); \ @@ -123,12 +123,12 @@ _QP_OP(div) _QP_OP(mul) _QP_OP(sub) -_QP_TTOQ(d, d, double, u_int, u.a[0], u.a[1]) -_QP_TTOQ(i, i, int, u_int, u.a[0]) -_QP_TTOQ(s, s, float, u_int, u.a[0]) -_QP_TTOQ(x, x, long, u_long, u.a[0]) -_QP_TTOQ(ui, i, u_int, u_int, u.a[0]) -_QP_TTOQ(ux, x, u_long, u_long, u.a[0]) +_QP_TTOQ(d, d, double, 31, u_int, u.a[0], u.a[1]) +_QP_TTOQ(i, i, int, 31, u_int, u.a[0]) +_QP_TTOQ(s, s, float, 31, u_int, u.a[0]) +_QP_TTOQ(x, x, long, 63, u_long, u.a[0]) +_QP_TTOQ(ui, i, u_int, -1, u_int, u.a[0]) +_QP_TTOQ(ux, x, u_long, -1, u_long, u.a[0]) _QP_QTOT(d, d, double, &u.a) _QP_QTOT(i, i, int) |
