diff options
Diffstat (limited to 'newlib/libc/machine/nds32/setjmp.S')
| -rw-r--r-- | newlib/libc/machine/nds32/setjmp.S | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/newlib/libc/machine/nds32/setjmp.S b/newlib/libc/machine/nds32/setjmp.S index 906efab8f..e5d8531bc 100644 --- a/newlib/libc/machine/nds32/setjmp.S +++ b/newlib/libc/machine/nds32/setjmp.S @@ -40,7 +40,9 @@ The usage of thirty-two 32-bit General Purpose Registers (GPR): reserved for assembler : $r15 reserved for other use : $r24, $r25, $r26, $r27 -Save all callee-save registers and $fp, $gp, $lp and $sp. +Save all callee-save registers and $fp, $gp, $lp and $sp is enough in theory. +For debugging issue, the layout of jum_buf in here should be in sync with GDB. +The $r16 ~ $r19 are used to store D0/D1, keep them for backward-compatible. */ /* int setjmp(jmp_buf env); */ @@ -50,13 +52,12 @@ Save all callee-save registers and $fp, $gp, $lp and $sp. .type setjmp, @function setjmp: #ifdef __NDS32_REDUCED_REGS__ - /* This case, save 10 words. */ - smw.bim $r6, [$r0], $r10, 0x0 - smw.bim $r31, [$r0], $r31, 0xf + smw.bim $r6, [$r0], $r10, #0b0000 + addi $r0, $r0, #32 /* Leave room to keep jum_buf all the same. */ + smw.bim $r31, [$r0], $r31, #0b1111 #else - /* This case, save 17 words. */ - smw.bim $r6, [$r0], $r14, 0x0 - smw.bim $r16, [$r0], $r19, 0xf + smw.bim $r6, [$r0], $r14, #0b0000 + smw.bim $r16, [$r0], $r19, #0b1111 #endif /* Set return value to zero. */ @@ -72,11 +73,12 @@ setjmp: .type longjmp, @function longjmp: #ifdef __NDS32_REDUCED_REGS__ - lmw.bim $r6, [$r0], $r10, 0x0 - lmw.bim $r31, [$r0], $r31, 0xf + lmw.bim $r6, [$r0], $r10, #0b0000 + addi $r0, $r0, #32 + lmw.bim $r31, [$r0], $r31, #0b1111 #else - lmw.bim $r6, [$r0], $r14, 0x0 - lmw.bim $r16, [$r0], $r19, 0xf + lmw.bim $r6, [$r0], $r14, #0b0000 + lmw.bim $r16, [$r0], $r19, #0b1111 #endif /* Set val as return value. If the value val is 0, 1 will be returned instead. */ |