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/* e500 registers, for PSIM, the PowerPC simulator.
Copyright 2003-2024 Free Software Foundation, Inc.
Contributed by Red Hat Inc; developed under contract from Motorola.
Written by matthew green <mrg@redhat.com>.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* e500 accumulator. */
typedef uint64_t accreg;
enum {
msr_e500_spu_enable = BIT(38)
};
/* E500 registers. */
enum
{
spefscr_sovh = BIT(32), /* summary integer overlow (high) */
spefscr_ovh = BIT(33), /* int overflow (high) */
spefscr_fgh = BIT(34), /* FP guard (high) */
spefscr_fxh = BIT(35), /* FP sticky (high) */
spefscr_finvh = BIT(36), /* FP invalid operand (high) */
spefscr_fdbzh = BIT(37), /* FP divide by zero (high) */
spefscr_funfh = BIT(38), /* FP underflow (high) */
spefscr_fovfh = BIT(39), /* FP overflow (high) */
spefscr_finxs = BIT(42), /* FP inexact sticky */
spefscr_finvs = BIT(43), /* FP invalid operand sticky */
spefscr_fdbzs = BIT(44), /* FP divide by zero sticky */
spefscr_funfs = BIT(45), /* FP underflow sticky */
spefscr_fovfs = BIT(46), /* FP overflow sticky */
spefscr_mode = BIT(47), /* SPU MODE (read only) */
spefscr_sov = BIT(48), /* Summary integer overlow (low) */
spefscr_ov = BIT(49), /* int overflow (low) */
spefscr_fg = BIT(50), /* FP guard (low) */
spefscr_fx = BIT(51), /* FP sticky (low) */
spefscr_finv = BIT(52), /* FP invalid operand (low) */
spefscr_fdbz = BIT(53), /* FP divide by zero (low) */
spefscr_funf = BIT(54), /* FP underflow (low) */
spefscr_fovf = BIT(55), /* FP overflow (low) */
spefscr_finxe = BIT(57), /* FP inexact enable */
spefscr_finve = BIT(58), /* FP invalid operand enable */
spefscr_fdbze = BIT(59), /* FP divide by zero enable */
spefscr_funfe = BIT(60), /* FP underflow enable */
spefscr_fovfe = BIT(61), /* FP overflow enable */
spefscr_frmc0 = BIT(62), /* FP round mode control */
spefscr_frmc1 = BIT(63),
spefscr_frmc = (spefscr_frmc0 | spefscr_frmc1),
};
struct e500_regs {
/* e500 high bits. */
signed_word gprh[32];
/* Accumulator */
accreg acc;
};
/* SPE partially visible acculator */
#define ACC cpu_registers(processor)->e500.acc
/* e500 register high bits */
#define GPRH(N) cpu_registers(processor)->e500.gprh[N]
/* e500 unified vector register
We need to cast the gpr value to an unsigned type so that it
doesn't get sign-extended when it's or-ed with a 64-bit value; that
would wipe out the upper 32 bits of the register's value. */
#define EVR(N) ((((uint64_t)GPRH(N)) << 32) | (uint32_t) GPR(N))
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