Add support for Loongarch64
Signed-off-by: Peng Fan <fanpeng@loongson.cn>pull/30/head
Peng Fan
parent
0108623531
commit
a182fee66a
|
|
@ -0,0 +1,76 @@
|
||||||
|
#ifndef __ARCH_LOONGARCH64_DEFS_H
|
||||||
|
#define __ARCH_LOONGARCH64_DEFS_H
|
||||||
|
|
||||||
|
#define REG_SZ (8)
|
||||||
|
|
||||||
|
#define REG_R0 (0)
|
||||||
|
#define REG_R1 (1)
|
||||||
|
#define REG_R2 (2)
|
||||||
|
#define REG_R3 (3)
|
||||||
|
#define REG_R4 (4)
|
||||||
|
#define REG_R5 (5)
|
||||||
|
#define REG_R6 (6)
|
||||||
|
#define REG_R7 (7)
|
||||||
|
#define REG_R8 (8)
|
||||||
|
#define REG_R9 (9)
|
||||||
|
#define REG_R10 (10)
|
||||||
|
#define REG_R11 (11)
|
||||||
|
#define REG_R12 (12)
|
||||||
|
#define REG_R13 (13)
|
||||||
|
#define REG_R14 (14)
|
||||||
|
#define REG_R15 (15)
|
||||||
|
#define REG_R16 (16)
|
||||||
|
#define REG_R17 (17)
|
||||||
|
#define REG_R18 (18)
|
||||||
|
#define REG_R19 (19)
|
||||||
|
#define REG_R20 (20)
|
||||||
|
#define REG_R21 (21)
|
||||||
|
#define REG_R22 (22)
|
||||||
|
#define REG_R23 (23)
|
||||||
|
#define REG_R24 (24)
|
||||||
|
#define REG_R25 (25)
|
||||||
|
#define REG_R26 (26)
|
||||||
|
#define REG_R27 (27)
|
||||||
|
#define REG_R28 (28)
|
||||||
|
#define REG_R29 (29)
|
||||||
|
#define REG_R30 (30)
|
||||||
|
#define REG_R31 (31)
|
||||||
|
|
||||||
|
/* $a0 is $4 , also $v0, same as $5, $a1 and $v1*/
|
||||||
|
#define REG_A0 (4)
|
||||||
|
|
||||||
|
/* stack pointer is actually $3 */
|
||||||
|
#define REG_SP (3)
|
||||||
|
|
||||||
|
/* frame pointer is actually $22 */
|
||||||
|
#define REG_FP (22)
|
||||||
|
|
||||||
|
/* offset to mc_gregs in ucontext_t */
|
||||||
|
#define MCONTEXT_GREGS (48)
|
||||||
|
|
||||||
|
/* offset to PC in ucontext_t */
|
||||||
|
#define MCONTEXT_PC (40)
|
||||||
|
|
||||||
|
/* offset to uc_link in ucontext_t */
|
||||||
|
#define UCONTEXT_UC_LINK (8)
|
||||||
|
|
||||||
|
/* offset to uc_stack.ss_sp in ucontext_t */
|
||||||
|
#define UCONTEXT_STACK_PTR (16)
|
||||||
|
|
||||||
|
/* offset to uc_stack.ss_size in ucontext_t */
|
||||||
|
#define UCONTEXT_STACK_SIZE (32)
|
||||||
|
|
||||||
|
/* Stack alignment, from Kernel source */
|
||||||
|
#define ALSZ 15
|
||||||
|
#define ALMASK ~15
|
||||||
|
#define FRAMESZ (((LOCALSZ * REG_SZ) + ALSZ) & ALMASK)
|
||||||
|
|
||||||
|
#define PUSH_FRAME(__proc) \
|
||||||
|
addi.d $sp, $sp, -FRAMESZ;
|
||||||
|
|
||||||
|
#define POP_FRAME(__proc) \
|
||||||
|
addi.d $sp, $sp, FRAMESZ;
|
||||||
|
|
||||||
|
#include <common-defs.h>
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
@ -0,0 +1,43 @@
|
||||||
|
#ifndef LIBUCONTEXT_BITS_H
|
||||||
|
#define LIBUCONTEXT_BITS_H
|
||||||
|
|
||||||
|
typedef unsigned long long libucontext_greg_t, libucontext_gregset_t[32];
|
||||||
|
|
||||||
|
/* Container for all general registers. */
|
||||||
|
typedef __loongarch_mc_gp_state gregset_t;
|
||||||
|
|
||||||
|
/* Container for floating-point state. */
|
||||||
|
typedef union __loongarch_mc_fp_state fpregset_t;
|
||||||
|
|
||||||
|
union __loongarch_mc_fp_state {
|
||||||
|
unsigned int __val32[256 / 32];
|
||||||
|
unsigned long long __val64[256 / 64];
|
||||||
|
};
|
||||||
|
|
||||||
|
typedef struct mcontext_t {
|
||||||
|
unsigned long long __pc;
|
||||||
|
unsigned long long __gregs[32];
|
||||||
|
unsigned int __flags;
|
||||||
|
|
||||||
|
unsigned int __fcsr;
|
||||||
|
unsigned int __vcsr;
|
||||||
|
unsigned long long __fcc;
|
||||||
|
union __loongarch_mc_fp_state __fpregs[32] __attribute__((__aligned__ (32)));
|
||||||
|
|
||||||
|
unsigned int __reserved;
|
||||||
|
} mcontext_t;
|
||||||
|
|
||||||
|
typedef struct {
|
||||||
|
void *ss_sp;
|
||||||
|
int ss_flags;
|
||||||
|
size_t ss_size;
|
||||||
|
} libucontext_stack_t;
|
||||||
|
|
||||||
|
typedef struct libucontext_ucontext {
|
||||||
|
unsigned long uc_flags;
|
||||||
|
struct libucontext_ucontext *uc_link;
|
||||||
|
libucontext_stack_t uc_stack;
|
||||||
|
libucontext_mcontext_t uc_mcontext;
|
||||||
|
} libucontext_ucontext_t;
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
@ -0,0 +1,46 @@
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2021 Peng Fan <fanpeng@loongson.cn>
|
||||||
|
*
|
||||||
|
* Permission to use, copy, modify, and/or distribute this software for any
|
||||||
|
* purpose with or without fee is hereby granted, provided that the above
|
||||||
|
* copyright notice and this permission notice appear in all copies.
|
||||||
|
*
|
||||||
|
* This software is provided 'as is' and without any warranty, express or
|
||||||
|
* implied. In no event shall the authors be liable for any damages arising
|
||||||
|
* from the use of this software.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#define LOCALSZ (1)
|
||||||
|
|
||||||
|
#include "defs.h"
|
||||||
|
|
||||||
|
ALIAS(getcontext, libucontext_getcontext)
|
||||||
|
|
||||||
|
FUNC(libucontext_getcontext)
|
||||||
|
/* copy $sp, $fp to temporary registers so we don't clobber them */
|
||||||
|
move $a2, $sp
|
||||||
|
move $a3, $fp
|
||||||
|
|
||||||
|
PUSH_FRAME(libucontext_getcontext)
|
||||||
|
|
||||||
|
/* set registers */
|
||||||
|
st.d $s0, $a0, REG_OFFSET(23)
|
||||||
|
st.d $s1, $a0, REG_OFFSET(24)
|
||||||
|
st.d $s2, $a0, REG_OFFSET(25)
|
||||||
|
st.d $s3, $a0, REG_OFFSET(26)
|
||||||
|
st.d $s4, $a0, REG_OFFSET(27)
|
||||||
|
st.d $s5, $a0, REG_OFFSET(28)
|
||||||
|
st.d $s6, $a0, REG_OFFSET(29)
|
||||||
|
st.d $s7, $a0, REG_OFFSET(30)
|
||||||
|
st.d $s8, $a0, REG_OFFSET(31)
|
||||||
|
|
||||||
|
st.d $a2, $a0, REG_OFFSET(3)
|
||||||
|
st.d $a3, $a0, REG_OFFSET(22)
|
||||||
|
st.d $ra, $a0, REG_OFFSET(1)
|
||||||
|
|
||||||
|
st.d $ra, $a0, (MCONTEXT_PC)
|
||||||
|
|
||||||
|
POP_FRAME(libucontext_getcontext)
|
||||||
|
|
||||||
|
jr $ra
|
||||||
|
END(libucontext_getcontext)
|
||||||
|
|
@ -0,0 +1,108 @@
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2021 Peng Fan <fanpeng@loongson.cn>
|
||||||
|
*
|
||||||
|
* Permission to use, copy, modify, and/or distribute this software for any
|
||||||
|
* purpose with or without fee is hereby granted, provided that the above
|
||||||
|
* copyright notice and this permission notice appear in all copies.
|
||||||
|
*
|
||||||
|
* This software is provided 'as is' and without any warranty, express or
|
||||||
|
* implied. In no event shall the authors be liable for any damages arising
|
||||||
|
* from the use of this software.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "defs.h"
|
||||||
|
|
||||||
|
#define LOCALSZ (6)
|
||||||
|
|
||||||
|
#define A3_OFF (FRAMESZ - (5 * REG_SZ))
|
||||||
|
#define A4_OFF (FRAMESZ - (4 * REG_SZ))
|
||||||
|
#define A5_OFF (FRAMESZ - (3 * REG_SZ))
|
||||||
|
#define A6_OFF (FRAMESZ - (2 * REG_SZ))
|
||||||
|
#define A7_OFF (FRAMESZ - (1 * REG_SZ))
|
||||||
|
|
||||||
|
ALIAS(makecontext, libucontext_makecontext)
|
||||||
|
|
||||||
|
FUNC(libucontext_makecontext)
|
||||||
|
PUSH_FRAME(libucontext_makecontext)
|
||||||
|
|
||||||
|
move $t5, $a0
|
||||||
|
move $t4, $a1
|
||||||
|
|
||||||
|
/* store $a3 through $a7 to the stack frame. */
|
||||||
|
st.d $a3, $sp, A3_OFF
|
||||||
|
st.d $a4, $sp, A4_OFF
|
||||||
|
st.d $a5, $sp, A5_OFF
|
||||||
|
st.d $a6, $sp, A6_OFF
|
||||||
|
st.d $a7, $sp, A7_OFF
|
||||||
|
|
||||||
|
/* set $zero in the mcontext to 1. */
|
||||||
|
addi.d $v0, $zero, 1
|
||||||
|
st.d $v0, $t5, REG_OFFSET(0)
|
||||||
|
|
||||||
|
/* ensure the stack is aligned on a quad-word boundary. */
|
||||||
|
ld.d $t0, $t5, UCONTEXT_STACK_PTR
|
||||||
|
ld.d $t2, $t5, UCONTEXT_STACK_SIZE
|
||||||
|
/* the third argument(from zero), that's the first argument of func() */
|
||||||
|
addi.d $t1, $sp, A3_OFF
|
||||||
|
add.d $t0, $t0, $t2
|
||||||
|
|
||||||
|
addi.d $t7, $zero, ALMASK
|
||||||
|
and $t0, $t0, $t7
|
||||||
|
|
||||||
|
/* number of args */
|
||||||
|
beq $a2, $zero, no_more_arguments
|
||||||
|
bltu $a2, $zero, no_more_arguments
|
||||||
|
|
||||||
|
/* store register arguments. */
|
||||||
|
addi.d $t2, $t5, MCONTEXT_GREGS + (4 * REG_SZ)
|
||||||
|
move $t3, $zero
|
||||||
|
|
||||||
|
store_register_arg:
|
||||||
|
addi.d $t3, $t3, 1
|
||||||
|
ld.d $v1, $t1, 0
|
||||||
|
addi.d $t1, $t1, REG_SZ
|
||||||
|
st.d $v1, $t2, 0
|
||||||
|
addi.d $t2, $t2, REG_SZ
|
||||||
|
addi.d $t6, $zero, 8
|
||||||
|
bltu $t3, $t6, store_register_arg
|
||||||
|
bgeu $t3, $a2, no_more_arguments
|
||||||
|
|
||||||
|
/* make room for stack arguments. */
|
||||||
|
sub.d $t2, $a2, $t3
|
||||||
|
|
||||||
|
addi.d $t6, $zero, 3
|
||||||
|
sll.d $t2, $t2, $t6
|
||||||
|
|
||||||
|
sub.d $t0, $t0, $t2
|
||||||
|
|
||||||
|
addi.d $t6, $zero, ALMASK
|
||||||
|
and $t0, $t0, $t6
|
||||||
|
|
||||||
|
/* store stack arguments. */
|
||||||
|
move $t2, $t0
|
||||||
|
|
||||||
|
store_stack_arg:
|
||||||
|
addi.d $t3, $t3, 1
|
||||||
|
ld.d $v1, $t1, 0
|
||||||
|
addi.d $t1, $t1, REG_SZ
|
||||||
|
st.d $v1, $t2, 0
|
||||||
|
addi.d $t2, $t2, REG_SZ
|
||||||
|
bltu $t3, $a2, store_stack_arg
|
||||||
|
|
||||||
|
no_more_arguments:
|
||||||
|
/* trampoline setup. */
|
||||||
|
la.got $t8, libucontext_trampoline
|
||||||
|
|
||||||
|
ld.d $v1, $t5, UCONTEXT_UC_LINK
|
||||||
|
st.d $v1, $t5, REG_OFFSET(23)
|
||||||
|
|
||||||
|
st.d $t0, $t5, REG_OFFSET(3)
|
||||||
|
|
||||||
|
st.d $t8, $t5, REG_OFFSET(1)
|
||||||
|
|
||||||
|
st.d $t4, $t5, MCONTEXT_PC
|
||||||
|
|
||||||
|
POP_FRAME(libucontext_makecontext)
|
||||||
|
|
||||||
|
jr $ra
|
||||||
|
END(libucontext_makecontext)
|
||||||
|
|
@ -0,0 +1,55 @@
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2021 Peng Fan <fanpeng@loongson.cn>
|
||||||
|
*
|
||||||
|
* Permission to use, copy, modify, and/or distribute this software for any
|
||||||
|
* purpose with or without fee is hereby granted, provided that the above
|
||||||
|
* copyright notice and this permission notice appear in all copies.
|
||||||
|
*
|
||||||
|
* This software is provided 'as is' and without any warranty, express or
|
||||||
|
* implied. In no event shall the authors be liable for any damages arising
|
||||||
|
* from the use of this software.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#define LOCALSZ (1)
|
||||||
|
|
||||||
|
#include "defs.h"
|
||||||
|
|
||||||
|
ALIAS(setcontext, libucontext_setcontext)
|
||||||
|
|
||||||
|
FUNC(libucontext_setcontext)
|
||||||
|
PUSH_FRAME(libucontext_setcontext)
|
||||||
|
|
||||||
|
/* move the context to $v0, in LA, $v0 = $a0 = $4 */
|
||||||
|
move $t5, $a0
|
||||||
|
|
||||||
|
/* load the registers */
|
||||||
|
ld.d $a0, $t5, REG_OFFSET(4)
|
||||||
|
ld.d $a1, $t5, REG_OFFSET(5)
|
||||||
|
ld.d $a2, $t5, REG_OFFSET(6)
|
||||||
|
ld.d $a3, $t5, REG_OFFSET(7)
|
||||||
|
ld.d $a4, $t5, REG_OFFSET(8)
|
||||||
|
ld.d $a5, $t5, REG_OFFSET(9)
|
||||||
|
ld.d $a6, $t5, REG_OFFSET(10)
|
||||||
|
ld.d $a7, $t5, REG_OFFSET(11)
|
||||||
|
|
||||||
|
ld.d $s0, $t5, REG_OFFSET(23)
|
||||||
|
ld.d $s1, $t5, REG_OFFSET(24)
|
||||||
|
ld.d $s2, $t5, REG_OFFSET(25)
|
||||||
|
ld.d $s3, $t5, REG_OFFSET(26)
|
||||||
|
ld.d $s4, $t5, REG_OFFSET(27)
|
||||||
|
ld.d $s5, $t5, REG_OFFSET(28)
|
||||||
|
ld.d $s6, $t5, REG_OFFSET(29)
|
||||||
|
ld.d $s7, $t5, REG_OFFSET(30)
|
||||||
|
ld.d $s8, $t5, REG_OFFSET(31)
|
||||||
|
|
||||||
|
ld.d $sp, $t5, REG_OFFSET(3)
|
||||||
|
ld.d $fp, $t5, REG_OFFSET(22)
|
||||||
|
ld.d $ra, $t5, REG_OFFSET(1)
|
||||||
|
|
||||||
|
ld.d $t8, $t5, (MCONTEXT_PC)
|
||||||
|
|
||||||
|
jr $t8
|
||||||
|
move $v0, $zero
|
||||||
|
|
||||||
|
POP_FRAME(libucontext_setcontext)
|
||||||
|
END(libucontext_setcontext)
|
||||||
|
|
@ -0,0 +1,33 @@
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2021 Peng Fan <fanpeng@loongson.cn>
|
||||||
|
*
|
||||||
|
* Permission to use, copy, modify, and/or distribute this software for any
|
||||||
|
* purpose with or without fee is hereby granted, provided that the above
|
||||||
|
* copyright notice and this permission notice appear in all copies.
|
||||||
|
*
|
||||||
|
* This software is provided 'as is' and without any warranty, express or
|
||||||
|
* implied. In no event shall the authors be liable for any damages arising
|
||||||
|
* from the use of this software.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#define LOCALSZ (4)
|
||||||
|
|
||||||
|
#include "defs.h"
|
||||||
|
|
||||||
|
FUNC(libucontext_trampoline)
|
||||||
|
|
||||||
|
/* call setcontext */
|
||||||
|
move $a0, $s0
|
||||||
|
/* we receive our initial ucontext in $s0, so if $s0 is nil, bail */
|
||||||
|
beqz $s0, no_linked_context
|
||||||
|
|
||||||
|
la.got $t8, libucontext_setcontext
|
||||||
|
|
||||||
|
jr $t8
|
||||||
|
|
||||||
|
no_linked_context:
|
||||||
|
move $a0, $zero
|
||||||
|
la.global $t8, exit
|
||||||
|
jr $t8
|
||||||
|
|
||||||
|
END(libucontext_trampoline)
|
||||||
|
|
@ -0,0 +1,89 @@
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2021 Peng Fan <fanpeng@loongson.cn>
|
||||||
|
*
|
||||||
|
* Permission to use, copy, modify, and/or distribute this software for any
|
||||||
|
* purpose with or without fee is hereby granted, provided that the above
|
||||||
|
* copyright notice and this permission notice appear in all copies.
|
||||||
|
*
|
||||||
|
* This software is provided 'as is' and without any warranty, express or
|
||||||
|
* implied. In no event shall the authors be liable for any damages arising
|
||||||
|
* from the use of this software.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#define LOCALSZ (4)
|
||||||
|
|
||||||
|
#include "defs.h"
|
||||||
|
|
||||||
|
#define A1_OFFSET (FRAMESZ - (1 * REG_SZ))
|
||||||
|
|
||||||
|
ALIAS(swapcontext, libucontext_swapcontext)
|
||||||
|
|
||||||
|
FUNC(libucontext_swapcontext)
|
||||||
|
/* copy $sp, $fp to temporary registers so we don't clobber them */
|
||||||
|
move $a3, $sp
|
||||||
|
move $a4, $fp
|
||||||
|
|
||||||
|
move $t5, $a0
|
||||||
|
|
||||||
|
PUSH_FRAME(libucontext_swapcontext)
|
||||||
|
|
||||||
|
/* set registers */
|
||||||
|
st.d $s0, $t5, REG_OFFSET(23)
|
||||||
|
st.d $s1, $t5, REG_OFFSET(24)
|
||||||
|
st.d $s2, $t5, REG_OFFSET(25)
|
||||||
|
st.d $s3, $t5, REG_OFFSET(26)
|
||||||
|
st.d $s4, $t5, REG_OFFSET(27)
|
||||||
|
st.d $s5, $t5, REG_OFFSET(28)
|
||||||
|
st.d $s6, $t5, REG_OFFSET(29)
|
||||||
|
st.d $s7, $t5, REG_OFFSET(30)
|
||||||
|
st.d $s8, $t5, REG_OFFSET(31)
|
||||||
|
|
||||||
|
st.d $a3, $t5, REG_OFFSET(3)
|
||||||
|
st.d $a4, $t5, REG_OFFSET(22)
|
||||||
|
st.d $ra, $t5, REG_OFFSET(1)
|
||||||
|
|
||||||
|
st.d $ra, $t5, (MCONTEXT_PC)
|
||||||
|
|
||||||
|
/* copy new context address in $a1 to stack */
|
||||||
|
st.d $a1, $sp, A1_OFFSET
|
||||||
|
|
||||||
|
/* load new context address into $v0 */
|
||||||
|
ld.d $t4, $sp, A1_OFFSET
|
||||||
|
|
||||||
|
/* load the registers */
|
||||||
|
ld.d $a0, $t4, REG_OFFSET(4)
|
||||||
|
ld.d $a1, $t4, REG_OFFSET(5)
|
||||||
|
ld.d $a2, $t4, REG_OFFSET(6)
|
||||||
|
ld.d $a3, $t4, REG_OFFSET(7)
|
||||||
|
ld.d $a4, $t4, REG_OFFSET(8)
|
||||||
|
ld.d $a5, $t4, REG_OFFSET(9)
|
||||||
|
ld.d $a6, $t4, REG_OFFSET(10)
|
||||||
|
ld.d $a7, $t4, REG_OFFSET(11)
|
||||||
|
|
||||||
|
ld.d $s0, $t4, REG_OFFSET(23)
|
||||||
|
ld.d $s1, $t4, REG_OFFSET(24)
|
||||||
|
ld.d $s2, $t4, REG_OFFSET(25)
|
||||||
|
ld.d $s3, $t4, REG_OFFSET(26)
|
||||||
|
ld.d $s4, $t4, REG_OFFSET(27)
|
||||||
|
ld.d $s5, $t4, REG_OFFSET(28)
|
||||||
|
ld.d $s6, $t4, REG_OFFSET(29)
|
||||||
|
ld.d $s7, $t4, REG_OFFSET(30)
|
||||||
|
ld.d $s8, $t4, REG_OFFSET(31)
|
||||||
|
|
||||||
|
ld.d $sp, $t4, REG_OFFSET(3)
|
||||||
|
ld.d $fp, $t4, REG_OFFSET(22)
|
||||||
|
ld.d $ra, $t4, REG_OFFSET(1)
|
||||||
|
|
||||||
|
ld.d $t8, $t4, (MCONTEXT_PC)
|
||||||
|
|
||||||
|
jr $t8
|
||||||
|
move $v0, $zero
|
||||||
|
|
||||||
|
fail:
|
||||||
|
la.global $t8, exit
|
||||||
|
|
||||||
|
POP_FRAME(libucontext_swapcontext)
|
||||||
|
|
||||||
|
jirl $ra, $t8, 0
|
||||||
|
move $v0, $zero
|
||||||
|
END(libucontext_swapcontext)
|
||||||
Loading…
Reference in New Issue