diff options
Diffstat (limited to 'libgcc/config')
| -rw-r--r-- | libgcc/config/arm/bpabi.S | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/libgcc/config/arm/bpabi.S b/libgcc/config/arm/bpabi.S index 3f9ece58ba0..c0441673029 100644 --- a/libgcc/config/arm/bpabi.S +++ b/libgcc/config/arm/bpabi.S @@ -175,10 +175,49 @@ ARM_FUNC_START aeabi_ldivmod test_div_by_zero signed push_for_divide __aeabi_ldivmod + cmp xxh, #0 + blt 1f + cmp yyh, #0 + blt 2f + /* arguments in (r0:r1), (r2:r3) and *sp */ + bl SYM(__udivmoddi4) __PLT__ + pop_for_divide + RET + +1: /* xxh:xxl is negative */ + negs xxl, xxl + sbc xxh, xxh, xxh, lsl #1 /* Thumb-2 has no RSC, so use X - 2X */ + cmp yyh, #0 + blt 3f + /* arguments in (r0:r1), (r2:r3) and *sp */ + bl SYM(__udivmoddi4) __PLT__ + pop_for_divide + negs xxl, xxl + sbc xxh, xxh, xxh, lsl #1 /* Thumb-2 has no RSC, so use X - 2X */ + negs yyl, yyl + sbc yyh, yyh, yyh, lsl #1 /* Thumb-2 has no RSC, so use X - 2X */ + RET + +2: /* only yyh:yyl is negative */ + negs yyl, yyl + sbc yyh, yyh, yyh, lsl #1 /* Thumb-2 has no RSC, so use X - 2X */ + /* arguments in (r0:r1), (r2:r3) and *sp */ + bl SYM(__udivmoddi4) __PLT__ + pop_for_divide + negs xxl, xxl + sbc xxh, xxh, xxh, lsl #1 /* Thumb-2 has no RSC, so use X - 2X */ + RET + +3: /* both xxh:xxl and yyh:yyl are negative */ + negs yyl, yyl + sbc yyh, yyh, yyh, lsl #1 /* Thumb-2 has no RSC, so use X - 2X */ /* arguments in (r0:r1), (r2:r3) and *sp */ - bl SYM(__gnu_ldivmod_helper) __PLT__ + bl SYM(__udivmoddi4) __PLT__ pop_for_divide + negs yyl, yyl + sbc yyh, yyh, yyh, lsl #1 /* Thumb-2 has no RSC, so use X - 2X */ RET + cfi_end LSYM(Lend_aeabi_ldivmod) #endif /* L_aeabi_ldivmod */ |