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sclog: support AArch64 division and shift instructions.

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These need to be logged for the same reasons as on x86.
This commit is contained in:
Simon Tatham 2020-11-26 17:53:50 +00:00
parent f65153ab5b
commit b3f2726b83
1 changed files with 33 additions and 0 deletions
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33
test/sclog/sclog.c
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@ -415,6 +415,19 @@ static dr_emit_flags_t instrument_instr(
OPND_CREATE_INTPTR(loc));
break;
#endif
#if defined(AARCH64)
case OP_sdiv:
case OP_udiv:
/*
* AArch64 hardware divisions. 0 = numerator, 1 = denominator.
*/
instr_format_location(instr, &loc);
dr_insert_clean_call(
drcontext, bb, instr, (void *)log_div, false,
3, instr_get_src(instr, 0), instr_get_src(instr, 1),
OPND_CREATE_INTPTR(loc));
break;
#endif
#if defined(X86)
case OP_shl:
case OP_shr:
@ -448,6 +461,26 @@ static dr_emit_flags_t instrument_instr(
}
break;
}
#endif
#if defined(AARCH64)
case OP_lslv:
case OP_asrv:
case OP_lsrv:
case OP_rorv: {
/*
* AArch64 variable shift instructions.
*/
opnd_t shiftcount = instr_get_src(instr, 1);
DR_ASSERT(opnd_is_reg(shiftcount));
reg_id_t shiftreg = opnd_get_reg(shiftcount);
if (shiftreg >= DR_REG_W0 && shiftreg <= DR_REG_WSP)
shiftreg = reg_32_to_64(shiftreg);
instr_format_location(instr, &loc);
dr_insert_clean_call(
drcontext, bb, instr, (void *)log_var_shift, false,
2, opnd_create_reg(shiftreg), OPND_CREATE_INTPTR(loc));
break;
}
#endif
}