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thermosphere: add fpu regs save/restore

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TuxSH 2020-01-14 00:32:09 +00:00
parent a7741c8576
commit 067770334e
5 changed files with 150 additions and 1 deletions
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47
thermosphere/src/fpu.c Normal file
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@ -0,0 +1,47 @@
/*
* Copyright (c) 2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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/>.
*/
#include "fpu.h"
#include "execute_function.h"
#include "core_ctx.h"
FpuRegisterStorage TEMPORARY g_fpuRegisterStorage[4] = { 0 };
// fpu_regs_load_store.s
void fpuLoadRegistersFromStorage(const FpuRegisterStorage *storage);
void fpuStoreRegistersToStorage(FpuRegisterStorage *storage);
static void fpuDumpRegistersImpl(void *p)
{
(void)p;
fpuStoreRegistersToStorage(&g_fpuRegisterStorage[currentCoreCtx->coreId]);
}
static void fpuRestoreRegistersImpl(void *p)
{
(void)p;
fpuLoadRegistersFromStorage(&g_fpuRegisterStorage[currentCoreCtx->coreId]);
}
void fpuDumpRegisters(u32 coreList)
{
executeFunctionOnCores(fpuDumpRegistersImpl, NULL, true, coreList);
}
void fpuRestoreRegisters(u32 coreList)
{
executeFunctionOnCores(fpuRestoreRegistersImpl, NULL, true, coreList);
}

30
thermosphere/src/fpu.h Normal file
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@ -0,0 +1,30 @@
/*
* Copyright (c) 2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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/>.
*/
#pragma once
#include "utils.h"
typedef struct FpuRegisterStorage {
u128 q[32];
u64 fpsr;
u64 fpcr;
} FpuRegisterStorage;
extern FpuRegisterStorage g_fpuRegisterStorage[4];
void fpuDumpRegisters(u32 coreList);
void fpuRestoreRegisters(u32 coreList);

67
thermosphere/src/fpu_regs_load_store.s Normal file
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@ -0,0 +1,67 @@
/*
* Copyright (c) 2018-2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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/>.
*/
.macro LDSTORE_QREGS, op
\op q0, q1, [x0], 0x20
\op q2, q3, [x0], 0x20
\op q4, q5, [x0], 0x20
\op q6, q7, [x0], 0x20
\op q8, q9, [x0], 0x20
\op q10, q11, [x0], 0x20
\op q12, q13, [x0], 0x20
\op q14, q15, [x0], 0x20
\op q16, q17, [x0], 0x20
\op q18, q19, [x0], 0x20
\op q20, q21, [x0], 0x20
\op q22, q23, [x0], 0x20
\op q24, q25, [x0], 0x20
\op q26, q27, [x0], 0x20
\op q28, q29, [x0], 0x20
\op q30, q31, [x0], 0x20
.endm
.section .text.fpuLoadRegistersFromStorage, "ax", %progbits
.global fpuLoadRegistersFromStorage
.type fpuLoadRegistersFromStorage, %function
.func fpuLoadRegistersFromStorage
.cfi_startproc
fpuLoadRegistersFromStorage:
dmb sy
LDSTORE_QREGS ldp
ldp x1, x2, [x0]
msr fpsr, x1
msr fpcr, x2
dsb sy
isb sy
ret
.cfi_endproc
.endfunc
.section .text.fpuStoreRegistersToStorage, "ax", %progbits
.global fpuStoreRegistersToStorage
.type fpuStoreRegistersToStorage, %function
.func fpuStoreRegistersToStorage
.cfi_startproc
dsb sy
isb sy
LDSTORE_QREGS stp
mrs x1, fpsr
mrs x2, fpcr
stp x1, x2, [x0]
dmb sy
ret
.cfi_endproc
.endfunc

2
thermosphere/src/irq.c
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@ -212,7 +212,7 @@ void handleIrqException(ExceptionStackFrame *frame, bool isLowerEl, bool isA32)
u32 irqId = iar & 0x3FF;
u32 srcCore = (iar >> 10) & 7;
DEBUG("EL2 [core %d]: Received irq %x\n", (int)currentCoreCtx->coreId, irqId);
//DEBUG("EL2 [core %d]: Received irq %x\n", (int)currentCoreCtx->coreId, irqId);
if (irqId == GIC_IRQID_SPURIOUS) {
// Spurious interrupt received

5
thermosphere/src/types.h
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@ -23,3 +23,8 @@ typedef volatile s8 vs8; ///< 8-bit volatile signed integer.
typedef volatile s16 vs16; ///< 16-bit volatile signed integer.
typedef volatile s32 vs32; ///< 32-bit volatile signed integer.
typedef volatile s64 vs64; ///< 64-bit volatile signed integer.
typedef __uint128_t u128; ///< 128-bit unsigned integer.
typedef __int128_t s128; ///< 128-bit signed integer.
typedef volatile u128 vu128; ///< 128-bit volatile unsigned integer.
typedef volatile s128 vs128; ///< 128-bit volatile signed integer.