/* $NetBSD: __setjmp14.S,v 1.5 2023/10/11 09:12:21 skrll Exp $ */ #include "SYS.h" #include "assym.h" #if defined(LIBC_SCCS) __RCSID("$NetBSD: __setjmp14.S,v 1.5 2023/10/11 09:12:21 skrll Exp $") #endif /* * C library -- _setjmp, _longjmp * * longjmp(a,v) * will generate a "return(v?v:1)" from the last call to * setjmp(a) * by restoring registers from the stack. * The previous signal state is restored. */ ENTRY(__setjmp14) li a1, 1 REG_S a1, JB_MAGIC(a0) /* indicate sigmask */ REG_S ra, JB_RA(a0) /* save return address */ REG_S sp, JB_SP(a0) /* save stack pointer */ REG_S gp, JB_GP(a0) /* save global pointer */ REG_S tp, JB_TP(a0) /* save thread pointer */ REG_S s0, JB_S0(a0) /* save callee saved register */ REG_S s1, JB_S1(a0) /* save callee saved register */ REG_S s2, JB_S2(a0) /* save callee saved register */ REG_S s3, JB_S3(a0) /* save callee saved register */ REG_S s4, JB_S4(a0) /* save callee saved register */ REG_S s5, JB_S5(a0) /* save callee saved register */ REG_S s6, JB_S6(a0) /* save callee saved register */ REG_S s7, JB_S7(a0) /* save callee saved register */ REG_S s8, JB_S8(a0) /* save callee saved register */ REG_S s9, JB_S9(a0) /* save callee saved register */ REG_S s10, JB_S10(a0) /* save callee saved register */ REG_S s11, JB_S11(a0) /* save callee saved register */ #ifndef _SOFT_FLOAT frcsr t2 /* get FSCR */ REG_S t2, JB_FCSR(a0) /* save it */ fsd fs0, JB_FS0(a0) /* save callee saved register */ fsd fs1, JB_FS1(a0) /* save callee saved register */ fsd fs2, JB_FS2(a0) /* save callee saved register */ fsd fs3, JB_FS3(a0) /* save callee saved register */ fsd fs4, JB_FS4(a0) /* save callee saved register */ fsd fs5, JB_FS5(a0) /* save callee saved register */ fsd fs6, JB_FS6(a0) /* save callee saved register */ fsd fs7, JB_FS7(a0) /* save callee saved register */ fsd fs8, JB_FS8(a0) /* save callee saved register */ fsd fs9, JB_FS9(a0) /* save callee saved register */ fsd fs10, JB_FS10(a0) /* save callee saved register */ fsd fs11, JB_FS11(a0) /* save callee saved register */ #endif addi a2, a0, JB_SIGMASK /* &sigmask */ li a1, 0 /* set = NULL */ li a0, 0 /* how is ignored */ SYSTRAP_NOERROR(__sigprocmask14) /* assume no error */ li a0, 0 /* success */ /* indicate success */ ret /* return */ END(__setjmp14) ENTRY(__longjmp14) REG_L ra, JB_RA(a0) /* restore return address */ REG_L sp, JB_SP(a0) /* restore stack pointer */ REG_L gp, JB_GP(a0) /* restore global pointer */ #REG_L tp, JB_TP(a0) /* restore thread pointer */ REG_L s0, JB_S0(a0) /* restore callee saved register */ REG_L s1, JB_S1(a0) /* restore callee saved register */ REG_L s2, JB_S2(a0) /* restore callee saved register */ REG_L s3, JB_S3(a0) /* restore callee saved register */ REG_L s4, JB_S4(a0) /* restore callee saved register */ REG_L s5, JB_S5(a0) /* restore callee saved register */ REG_L s6, JB_S6(a0) /* restore callee saved register */ REG_L s7, JB_S7(a0) /* restore callee saved register */ REG_L s8, JB_S8(a0) /* restore callee saved register */ REG_L s9, JB_S9(a0) /* restore callee saved register */ REG_L s10, JB_S10(a0) /* restore callee saved register */ REG_L s11, JB_S11(a0) /* restore callee saved register */ #ifndef _SOFT_FLOAT REG_L t2, JB_FCSR(a0) /* get it */ fscsr t2 /* restore FSCR */ fld fs0, JB_FS0(a0) /* restore callee saved register */ fld fs1, JB_FS1(a0) /* restore callee saved register */ fld fs2, JB_FS2(a0) /* restore callee saved register */ fld fs3, JB_FS3(a0) /* restore callee saved register */ fld fs4, JB_FS4(a0) /* restore callee saved register */ fld fs5, JB_FS5(a0) /* restore callee saved register */ fld fs6, JB_FS6(a0) /* restore callee saved register */ fld fs7, JB_FS7(a0) /* restore callee saved register */ fld fs8, JB_FS8(a0) /* restore callee saved register */ fld fs9, JB_FS9(a0) /* restore callee saved register */ fld fs10, JB_FS10(a0) /* restore callee saved register */ fld fs11, JB_FS11(a0) /* restore callee saved register */ #endif mv t1, a1 /* save return value */ li a2, 0 addi a1, a0, JB_SIGMASK /* &sigmask */ li a0, SIG_SETMASK SYSTRAP_NOERROR(__sigprocmask14) /* assume no error */ li a0, 1 /* success */ /* default return value */ beqz t1, 1f /* test return value */ mv a0, t1 /* use it if not 0 */ 1: ret END(__longjmp14)
