1 /* $NetBSD: __setjmp14.S,v 1.5 2023/10/11 09:12:21 skrll Exp $ */ 2 3 #include "SYS.h" 4 #include "assym.h" 5 6 #if defined(LIBC_SCCS) 7 __RCSID("$NetBSD: __setjmp14.S,v 1.5 2023/10/11 09:12:21 skrll Exp $") 8 #endif 9 10 /* 11 * C library -- _setjmp, _longjmp 12 * 13 * longjmp(a,v) 14 * will generate a "return(v?v:1)" from the last call to 15 * setjmp(a) 16 * by restoring registers from the stack. 17 * The previous signal state is restored. 18 */ 19 20 ENTRY(__setjmp14) 21 li a1, 1 22 REG_S a1, JB_MAGIC(a0) /* indicate sigmask */ 23 REG_S ra, JB_RA(a0) /* save return address */ 24 REG_S sp, JB_SP(a0) /* save stack pointer */ 25 REG_S gp, JB_GP(a0) /* save global pointer */ 26 REG_S tp, JB_TP(a0) /* save thread pointer */ 27 REG_S s0, JB_S0(a0) /* save callee saved register */ 28 REG_S s1, JB_S1(a0) /* save callee saved register */ 29 REG_S s2, JB_S2(a0) /* save callee saved register */ 30 REG_S s3, JB_S3(a0) /* save callee saved register */ 31 REG_S s4, JB_S4(a0) /* save callee saved register */ 32 REG_S s5, JB_S5(a0) /* save callee saved register */ 33 REG_S s6, JB_S6(a0) /* save callee saved register */ 34 REG_S s7, JB_S7(a0) /* save callee saved register */ 35 REG_S s8, JB_S8(a0) /* save callee saved register */ 36 REG_S s9, JB_S9(a0) /* save callee saved register */ 37 REG_S s10, JB_S10(a0) /* save callee saved register */ 38 REG_S s11, JB_S11(a0) /* save callee saved register */ 39 #ifndef _SOFT_FLOAT 40 frcsr t2 /* get FSCR */ 41 REG_S t2, JB_FCSR(a0) /* save it */ 42 fsd fs0, JB_FS0(a0) /* save callee saved register */ 43 fsd fs1, JB_FS1(a0) /* save callee saved register */ 44 fsd fs2, JB_FS2(a0) /* save callee saved register */ 45 fsd fs3, JB_FS3(a0) /* save callee saved register */ 46 fsd fs4, JB_FS4(a0) /* save callee saved register */ 47 fsd fs5, JB_FS5(a0) /* save callee saved register */ 48 fsd fs6, JB_FS6(a0) /* save callee saved register */ 49 fsd fs7, JB_FS7(a0) /* save callee saved register */ 50 fsd fs8, JB_FS8(a0) /* save callee saved register */ 51 fsd fs9, JB_FS9(a0) /* save callee saved register */ 52 fsd fs10, JB_FS10(a0) /* save callee saved register */ 53 fsd fs11, JB_FS11(a0) /* save callee saved register */ 54 #endif 55 56 addi a2, a0, JB_SIGMASK /* &sigmask */ 57 li a1, 0 /* set = NULL */ 58 li a0, 0 /* how is ignored */ 59 SYSTRAP_NOERROR(__sigprocmask14) /* assume no error */ 60 li a0, 0 /* success */ /* indicate success */ 61 ret /* return */ 62 END(__setjmp14) 63 64 ENTRY(__longjmp14) 65 REG_L ra, JB_RA(a0) /* restore return address */ 66 REG_L sp, JB_SP(a0) /* restore stack pointer */ 67 REG_L gp, JB_GP(a0) /* restore global pointer */ 68 #REG_L tp, JB_TP(a0) /* restore thread pointer */ 69 REG_L s0, JB_S0(a0) /* restore callee saved register */ 70 REG_L s1, JB_S1(a0) /* restore callee saved register */ 71 REG_L s2, JB_S2(a0) /* restore callee saved register */ 72 REG_L s3, JB_S3(a0) /* restore callee saved register */ 73 REG_L s4, JB_S4(a0) /* restore callee saved register */ 74 REG_L s5, JB_S5(a0) /* restore callee saved register */ 75 REG_L s6, JB_S6(a0) /* restore callee saved register */ 76 REG_L s7, JB_S7(a0) /* restore callee saved register */ 77 REG_L s8, JB_S8(a0) /* restore callee saved register */ 78 REG_L s9, JB_S9(a0) /* restore callee saved register */ 79 REG_L s10, JB_S10(a0) /* restore callee saved register */ 80 REG_L s11, JB_S11(a0) /* restore callee saved register */ 81 #ifndef _SOFT_FLOAT 82 REG_L t2, JB_FCSR(a0) /* get it */ 83 fscsr t2 /* restore FSCR */ 84 fld fs0, JB_FS0(a0) /* restore callee saved register */ 85 fld fs1, JB_FS1(a0) /* restore callee saved register */ 86 fld fs2, JB_FS2(a0) /* restore callee saved register */ 87 fld fs3, JB_FS3(a0) /* restore callee saved register */ 88 fld fs4, JB_FS4(a0) /* restore callee saved register */ 89 fld fs5, JB_FS5(a0) /* restore callee saved register */ 90 fld fs6, JB_FS6(a0) /* restore callee saved register */ 91 fld fs7, JB_FS7(a0) /* restore callee saved register */ 92 fld fs8, JB_FS8(a0) /* restore callee saved register */ 93 fld fs9, JB_FS9(a0) /* restore callee saved register */ 94 fld fs10, JB_FS10(a0) /* restore callee saved register */ 95 fld fs11, JB_FS11(a0) /* restore callee saved register */ 96 #endif 97 mv t1, a1 /* save return value */ 98 li a2, 0 99 addi a1, a0, JB_SIGMASK /* &sigmask */ 100 li a0, SIG_SETMASK 101 SYSTRAP_NOERROR(__sigprocmask14) /* assume no error */ 102 li a0, 1 /* success */ /* default return value */ 103 beqz t1, 1f /* test return value */ 104 mv a0, t1 /* use it if not 0 */ 105 1: ret 106 END(__longjmp14) 107
Indexes created Tue Sep 23 07:09:52 GMT 2025