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DynASM/ARM64: Fix ADRP encoding with absolute address.

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Thanks to Dmitry Stogov.
This commit is contained in:
Mike Pall 2021-05-22 13:31:48 +02:00
parent aa7ac66068
commit 5783ba1bf7
1 changed files with 7 additions and 1 deletions
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8
dynasm/dasm_arm64.h
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@ -473,7 +473,13 @@ int dasm_encode(Dst_DECL, void *buffer)
} }
break; break;
case DASM_REL_A: { case DASM_REL_A: {
ptrdiff_t na = (((ptrdiff_t)(*b++) << 32) | (unsigned int)n) - (ptrdiff_t)cp + 4; ptrdiff_t na = (((ptrdiff_t)(*b++) << 32) | (unsigned int)n);
if ((ins & 0x3000) == 0x3000) { /* ADRP */
ins &= ~0x1000;
na = (na >> 12) - (((ptrdiff_t)cp - 4) >> 12);
} else {
na = na - (ptrdiff_t)cp + 4;
}
n = (int)na; n = (int)na;
CK((ptrdiff_t)n == na, RANGE_REL); CK((ptrdiff_t)n == na, RANGE_REL);
goto patchrel; goto patchrel;