Add MIPS N64 support for libcontext
This commit is contained in:
Jiaxun Yang
Seth Hillbrand
parent
e798cbe6c7
commit
320f4b6cd9
|
|
@ -710,3 +710,120 @@ __asm (
|
||||||
);
|
);
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
#if defined(LIBCONTEXT_PLATFORM_linux_mips_n64) && defined(LIBCONTEXT_COMPILER_gcc)
|
||||||
|
__asm (
|
||||||
|
".text\n"
|
||||||
|
".globl jump_fcontext\n"
|
||||||
|
".align 2\n"
|
||||||
|
".set noreorder\n"
|
||||||
|
".type jump_fcontext,@function\n"
|
||||||
|
".ent jump_fcontext\n"
|
||||||
|
"jump_fcontext:\n"
|
||||||
|
" # reserve space on stack\n"
|
||||||
|
" daddiu $sp, $sp, -176\n"
|
||||||
|
" sd $s0, 64($sp) # save S0\n"
|
||||||
|
" sd $s1, 72($sp) # save S1\n"
|
||||||
|
" sd $s2, 80($sp) # save S2\n"
|
||||||
|
" sd $s3, 88($sp) # save S3\n"
|
||||||
|
" sd $s4, 96($sp) # save S4\n"
|
||||||
|
" sd $s5, 104($sp) # save S5\n"
|
||||||
|
" sd $s6, 112($sp) # save S6\n"
|
||||||
|
" sd $s7, 120($sp) # save S7\n"
|
||||||
|
" sd $fp, 128($sp) # save FP\n"
|
||||||
|
" sd $ra, 144($sp) # save RA\n"
|
||||||
|
" sd $ra, 152($sp) # save RA as PC\n"
|
||||||
|
" s.d $f24, 0($sp) # save F24\n"
|
||||||
|
" s.d $f25, 8($sp) # save F25\n"
|
||||||
|
" s.d $f26, 16($sp) # save F26\n"
|
||||||
|
" s.d $f27, 24($sp) # save F27\n"
|
||||||
|
" s.d $f28, 32($sp) # save F28\n"
|
||||||
|
" s.d $f29, 40($sp) # save F29\n"
|
||||||
|
" s.d $f30, 48($sp) # save F30\n"
|
||||||
|
" s.d $f31, 56($sp) # save F31\n"
|
||||||
|
" # store SP (pointing to old context-data) in pointer a0(first arg)\n"
|
||||||
|
" sd $sp, 0($a0)\n"
|
||||||
|
" # get SP (pointing to new context-data) from a1 param\n"
|
||||||
|
" move $sp, $a1\n"
|
||||||
|
" l.d $f24, 0($sp) # restore F24\n"
|
||||||
|
" l.d $f25, 8($sp) # restore F25\n"
|
||||||
|
" l.d $f26, 16($sp) # restore F26\n"
|
||||||
|
" l.d $f27, 24($sp) # restore F27\n"
|
||||||
|
" l.d $f28, 32($sp) # restore F28\n"
|
||||||
|
" l.d $f29, 40($sp) # restore F29\n"
|
||||||
|
" l.d $f30, 48($sp) # restore F30\n"
|
||||||
|
" l.d $f31, 56($sp) # restore F31\n"
|
||||||
|
" ld $s0, 64($sp) # restore S0\n"
|
||||||
|
" ld $s1, 72($sp) # restore S1\n"
|
||||||
|
" ld $s2, 80($sp) # restore S2\n"
|
||||||
|
" ld $s3, 88($sp) # restore S3\n"
|
||||||
|
" ld $s4, 96($sp) # restore S4\n"
|
||||||
|
" ld $s5, 104($sp) # restore S5\n"
|
||||||
|
" ld $s6, 112($sp) # restore S6\n"
|
||||||
|
" ld $s7, 120($sp) # restore S7\n"
|
||||||
|
" ld $fp, 128($sp) # restore FP\n"
|
||||||
|
" ld $ra, 144($sp) # restore RA\n"
|
||||||
|
" # load PC\n"
|
||||||
|
" ld $t9, 152($sp)\n"
|
||||||
|
" sd $a2, 160($sp)\n"
|
||||||
|
" # adjust stack\n"
|
||||||
|
" daddiu $sp, $sp, 176\n"
|
||||||
|
" move $a0, $a2 # move *data from a2 to a0 as param\n"
|
||||||
|
" move $v0, $a2 # move *data from a2 to v0 as return\n"
|
||||||
|
" # jump to context\n"
|
||||||
|
" jr $t9\n"
|
||||||
|
" nop\n"
|
||||||
|
".end jump_fcontext\n"
|
||||||
|
".size jump_fcontext, .-jump_fcontext\n"
|
||||||
|
".section .note.GNU-stack,\"\",%progbits\n"
|
||||||
|
);
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if defined(LIBCONTEXT_PLATFORM_linux_mips_n64) && defined(LIBCONTEXT_COMPILER_gcc)
|
||||||
|
__asm (
|
||||||
|
".text\n"
|
||||||
|
".globl make_fcontext\n"
|
||||||
|
".align 2\n"
|
||||||
|
".set noreorder\n"
|
||||||
|
".type make_fcontext,@function\n"
|
||||||
|
".ent make_fcontext\n"
|
||||||
|
"make_fcontext:\n"
|
||||||
|
"#ifdef __PIC__\n"
|
||||||
|
".set noreorder\n"
|
||||||
|
".cpload $t9\n"
|
||||||
|
".set reorder\n"
|
||||||
|
"#endif\n"
|
||||||
|
" # shift address in A0 to lower 16 byte boundary\n"
|
||||||
|
" li $v1, 0xfffffffffffffff0\n"
|
||||||
|
" and $v0, $v1, $a0\n"
|
||||||
|
" # reserve space for context-data on context-stack\n"
|
||||||
|
" daddiu $v0, $v0, -176\n"
|
||||||
|
" # third arg of make_fcontext() == address of context-function\n"
|
||||||
|
" sd $a2, 152($v0)\n"
|
||||||
|
" # save global pointer in context-data\n"
|
||||||
|
" sd $gp, 136($v0)\n"
|
||||||
|
" # psudo instruction compute abs address of label finish based on GP\n"
|
||||||
|
" dla $t9, finish\n"
|
||||||
|
" # save address of finish as return-address for context-function\n"
|
||||||
|
" # will be entered after context-function returns\n"
|
||||||
|
" sd $t9, 144($v0)\n"
|
||||||
|
" jr $ra # return pointer to context-data\n"
|
||||||
|
" nop\n"
|
||||||
|
"finish:\n"
|
||||||
|
" # reload our gp register (needed for la)\n"
|
||||||
|
" daddiu $t0, $sp, -176\n"
|
||||||
|
" ld $gp, 136($t0)\n"
|
||||||
|
" ld $v0, 160($t0)\n"
|
||||||
|
" # call _exit(0)\n"
|
||||||
|
" dla $t9, _exit\n"
|
||||||
|
" move $a0, $zero\n"
|
||||||
|
" jr $t9\n"
|
||||||
|
" nop\n"
|
||||||
|
".end make_fcontext\n"
|
||||||
|
".size make_fcontext, .-make_fcontext\n"
|
||||||
|
".section .note.GNU-stack,\"\",%progbits\n"
|
||||||
|
);
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
|
||||||
|
|
@ -39,6 +39,9 @@
|
||||||
#elif __aarch64__
|
#elif __aarch64__
|
||||||
#define LIBCONTEXT_PLATFORM_linux_arm64
|
#define LIBCONTEXT_PLATFORM_linux_arm64
|
||||||
#define LIBCONTEXT_CALL_CONVENTION
|
#define LIBCONTEXT_CALL_CONVENTION
|
||||||
|
#elif (__mips__ && _MIPS_SIM == _ABI64)
|
||||||
|
#define LIBCONTEXT_PLATFORM_linux_mips_n64
|
||||||
|
#define LIBCONTEXT_CALL_CONVENTION
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
#elif defined(__MINGW32__) || defined(__MINGW64__)
|
#elif defined(__MINGW32__) || defined(__MINGW64__)
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue