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ST: Support Cygwin64 and MIPS

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winlin 2021-10-02 08:54:53 +08:00
parent 7d3ec991e1
commit 1836847269
29 changed files with 1116 additions and 105 deletions
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81
trunk/3rdparty/st-srs/md_linux.S vendored
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@ -1,3 +1,4 @@
/* SPDX-License-Identifier: MPL-1.1 OR GPL-2.0-or-later */
/* If user disable the ASM, such as avoiding bugs in ASM, donot compile it. */
#if !defined(MD_ST_NO_ASM)
@ -347,6 +348,86 @@
/****************************************************************/
#elif defined(__mips__)
/****************************************************************/
/*
* Internal __jmp_buf layout
*/
#define JB_SP 0 /* Stack pointer */
#define JB_RA 11 /* Return address */
#define JB_GP 1 /* Global pointer */
#define JB_S0 3 /* S0-S7, Saved temporaries */
#define JB_S1 4 /* S0-S7, Saved temporaries */
#define JB_S2 5 /* S0-S7, Saved temporaries */
#define JB_S3 6 /* S0-S7, Saved temporaries */
#define JB_S4 7 /* S0-S7, Saved temporaries */
#define JB_S5 8 /* S0-S7, Saved temporaries */
#define JB_S6 9 /* S0-S7, Saved temporaries */
#define JB_S7 10 /* S0-S7, Saved temporaries */
#define JB_FP 2 /* FP/S8 Frame pointer */
.file "md_linux.S"
.text
/* _st_md_cxt_save(__jmp_buf env) */ /* The env is $a0, https://en.wikipedia.org/wiki/MIPS_architecture#Calling_conventions */
.globl _st_md_cxt_save
.type _st_md_cxt_save, %function
.align 2
_st_md_cxt_save:
sw $sp, 0($a0) /* Save sp to env[0], *(long*)($a0+0) =sp */
sw $ra, 4($a0) /* Save ra to env[1], *(long*)($a0+4)=ra, the return address, https://chortle.ccsu.edu/AssemblyTutorial/Chapter-26/ass26_4.html */
sw $gp, 8($a0) /* Save gp to env[2], *(long*)($a0+8) =gp */
sw $s0, 12($a0) /* Save s0 to env[3], *(long*)($a0+12)=s0 */
sw $s1, 16($a0) /* Save s1 to env[4], *(long*)($a0+16)=s1 */
sw $s2, 20($a0) /* Save s2 to env[5], *(long*)($a0+20)=s2 */
sw $s3, 24($a0) /* Save s3 to env[6], *(long*)($a0+24)=s3 */
sw $s4, 28($a0) /* Save s4 to env[7], *(long*)($a0+28)=s4 */
sw $s5, 32($a0) /* Save s5 to env[8], *(long*)($a0+32)=s5 */
sw $s6, 36($a0) /* Save s6 to env[9], *(long*)($a0+36)=s6 */
sw $s7, 40($a0) /* Save s7 to env[10], *(long*)($a0+40)=s7 */
sw $fp, 44($a0) /* Save fp to env[11], *(long*)($a0+44) =fp */
li $v0, 0 /* Set return value to 0 */
jr $ra /* Return */
.size _st_md_cxt_save, .-_st_md_cxt_save
/****************************************************************/
/* _st_md_cxt_restore(__jmp_buf env, int val) */
.globl _st_md_cxt_restore
.type _st_md_cxt_restore, %function
.align 2
_st_md_cxt_restore:
lw $sp, 0($a0) /* Load sp from env[0], sp=*(long*)($a0+0) */
lw $ra, 4($a0) /* Load sp from env[1], ra=*(long*)($a0+4), the saved return address */
lw $gp, 8($a0) /* Load sp from env[2], gp=*(long*)($a0+8) */
lw $s0, 12($a0) /* Load sp from env[3], s0=*(long*)($a0+12) */
lw $s1, 16($a0) /* Load sp from env[4], s1=*(long*)($a0+16) */
lw $s2, 20($a0) /* Load sp from env[5], s2=*(long*)($a0+20) */
lw $s3, 24($a0) /* Load sp from env[6], s3=*(long*)($a0+24) */
lw $s4, 28($a0) /* Load sp from env[7], s4=*(long*)($a0+28) */
lw $s5, 32($a0) /* Load sp from env[8], s5=*(long*)($a0+32) */
lw $s6, 36($a0) /* Load sp from env[9], s6=*(long*)($a0+36) */
lw $s7, 40($a0) /* Load sp from env[10], s7=*(long*)($a0+40) */
lw $fp, 44($a0) /* Load sp from env[2], fp=*(long*)($a0+44) */
li $v0, 1 /* Set return value to 1 */
jr $ra /* Return to the saved return address */
.size _st_md_cxt_restore, .-_st_md_cxt_restore
/****************************************************************/
#endif
#endif