diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/fenv/superh/fenv.s | 74 | ||||
| -rw-r--r-- | src/internal/superh/syscall.s | 22 | ||||
| -rw-r--r-- | src/ldso/superh/dlsym.s | 10 | ||||
| -rw-r--r-- | src/ldso/superh/start.s | 26 | ||||
| -rw-r--r-- | src/setjmp/superh/longjmp.s | 26 | ||||
| -rw-r--r-- | src/setjmp/superh/setjmp.s | 25 | ||||
| -rw-r--r-- | src/signal/superh/restore.s | 24 | ||||
| -rw-r--r-- | src/signal/superh/sigsetjmp.s | 27 | ||||
| -rw-r--r-- | src/thread/superh/__set_thread_area.s | 5 | ||||
| -rw-r--r-- | src/thread/superh/__unmapself.s | 22 | ||||
| -rw-r--r-- | src/thread/superh/clone.s | 47 | ||||
| -rw-r--r-- | src/thread/superh/syscall_cp.s | 39 | ||||
| -rw-r--r-- | src/unistd/superh/pipe.s | 27 |
13 files changed, 374 insertions, 0 deletions
diff --git a/src/fenv/superh/fenv.s b/src/fenv/superh/fenv.s new file mode 100644 index 00000000..7f5c6277 --- /dev/null +++ b/src/fenv/superh/fenv.s @@ -0,0 +1,74 @@ +.global fegetround +.type fegetround, @function +fegetround: + sts fpscr, r0 + rts + and #3, r0 + +.global __fesetround +.type __fesetround, @function +__fesetround: + sts fpscr, r0 + or r4, r0 + lds r0, fpscr + rts + mov #0, r0 + +.global fetestexcept +.type fetestexcept, @function +fetestexcept: + sts fpscr, r0 + and r4, r0 + rts + and #0x7c, r0 + +.global feclearexcept +.type feclearexcept, @function +feclearexcept: + mov r4, r0 + and #0x7c, r0 + not r0, r4 + sts fpscr, r0 + and r4, r0 + lds r0, fpscr + rts + mov #0, r0 + +.global feraiseexcept +.type feraiseexcept, @function +feraiseexcept: + mov r4, r0 + and #0x7c, r0 + sts fpscr, r4 + or r4, r0 + lds r0, fpscr + rts + mov #0, r0 + +.global fegetenv +.type fegetenv, @function +fegetenv: + sts fpscr, r0 + mov.l r0, @r4 + rts + mov #0, r0 + +.global fesetenv +.type fesetenv, @function +fesetenv: + mov r4, r0 + cmp/eq #-1, r0 + bf 1f + + ! the default environment is complicated by the fact that we need to + ! preserve the current precision bit, which we do not know a priori + sts fpscr, r0 + mov #8, r1 + swap.w r1, r1 + bra 2f + and r1, r0 + +1: mov.l @r4, r0 ! non-default environment +2: lds r0, fpscr + rts + mov #0, r0 diff --git a/src/internal/superh/syscall.s b/src/internal/superh/syscall.s new file mode 100644 index 00000000..a8fda1c0 --- /dev/null +++ b/src/internal/superh/syscall.s @@ -0,0 +1,22 @@ +.global __syscall +.type __syscall, @function +__syscall: + ! The kernel syscall entry point documents that the trap number indicates + ! the number of arguments being passed, but it then ignores that information. + ! Since we do not actually know how many arguments are being passed, we will + ! say there are six, since that is the maximum we support here. + mov r4, r3 + mov r5, r4 + mov r6, r5 + mov r7, r6 + mov.l @r15, r7 + mov.l @(4,r15), r0 + mov.l @(8,r15), r1 + trapa #22 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + rts + nop diff --git a/src/ldso/superh/dlsym.s b/src/ldso/superh/dlsym.s new file mode 100644 index 00000000..8258507f --- /dev/null +++ b/src/ldso/superh/dlsym.s @@ -0,0 +1,10 @@ +.text +.global dlsym +.type dlsym, @function +dlsym: + mov.l L1, r0 + braf r0 +1: mov.l @r15, r6 + +.align 2 +L1: .long __dlsym@PLT-(1b-.) diff --git a/src/ldso/superh/start.s b/src/ldso/superh/start.s new file mode 100644 index 00000000..ca6b7fc9 --- /dev/null +++ b/src/ldso/superh/start.s @@ -0,0 +1,26 @@ +.text +.global _start +.type _start, @function +_start: + mov.l @r15, r4 + mov r15, r5 + mov.l L1, r0 + bsrf r0 + add #4, r5 + +2: mov r0, r2 + mov.l @r15+, r1 +1: mov.l @r15+, r0 + cmp/eq #-1, r0 + bt/s 1b + add #-1, r1 + + add #1, r1 + mov.l r0, @-r15 + mov.l r1, @-r15 + mov #0, r4 + jmp @r2 + nop + +.align 2 +L1: .long __dynlink@PLT-(2b-.) diff --git a/src/setjmp/superh/longjmp.s b/src/setjmp/superh/longjmp.s new file mode 100644 index 00000000..e9aa4e50 --- /dev/null +++ b/src/setjmp/superh/longjmp.s @@ -0,0 +1,26 @@ +.global _longjmp +.global longjmp +.type _longjmp, @function +.type longjmp, @function +_longjmp: +longjmp: + mov.l @r4+, r8 + mov.l @r4+, r9 + mov.l @r4+, r10 + mov.l @r4+, r11 + mov.l @r4+, r12 + mov.l @r4+, r13 + mov.l @r4+, r14 + mov.l @r4+, r15 + lds.l @r4+, pr + fmov.s @r4+, fr12 + fmov.s @r4+, fr13 + fmov.s @r4+, fr14 + fmov.s @r4+, fr15 + + tst r5, r5 + movt r0 + add r5, r0 + + rts + nop diff --git a/src/setjmp/superh/setjmp.s b/src/setjmp/superh/setjmp.s new file mode 100644 index 00000000..6127ed90 --- /dev/null +++ b/src/setjmp/superh/setjmp.s @@ -0,0 +1,25 @@ +.global __setjmp +.global _setjmp +.global setjmp +.type __setjmp, @function +.type _setjmp, @function +.type setjmp, @function +__setjmp: +_setjmp: +setjmp: + add #52, r4 + fmov.s fr15, @-r4 + fmov.s fr14, @-r4 + fmov.s fr13, @-r4 + fmov.s fr12, @-r4 + sts.l pr, @-r4 + mov.l r15 @-r4 + mov.l r14, @-r4 + mov.l r13, @-r4 + mov.l r12, @-r4 + mov.l r11, @-r4 + mov.l r10, @-r4 + mov.l r9, @-r4 + mov.l r8, @-r4 + rts + mov #0, r0 diff --git a/src/signal/superh/restore.s b/src/signal/superh/restore.s new file mode 100644 index 00000000..ab26034b --- /dev/null +++ b/src/signal/superh/restore.s @@ -0,0 +1,24 @@ +.global __restore +.type __restore, @function +__restore: + mov #119, r3 !__NR_sigreturn + trapa #16 + + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + +.global __restore_rt +.type __restore_rt, @function +__restore_rt: + mov #100, r3 !__NR_rt_sigreturn + add #73, r3 + trapa #16 + + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 diff --git a/src/signal/superh/sigsetjmp.s b/src/signal/superh/sigsetjmp.s new file mode 100644 index 00000000..f6cae801 --- /dev/null +++ b/src/signal/superh/sigsetjmp.s @@ -0,0 +1,27 @@ +.global sigsetjmp +.type sigsetjmp, @function +sigsetjmp: + mov.l r5, @(36,r4) + tst r5, r5 + bf 2f + + sts.l pr, @-r15 + mov.l r4, @-r15 + mov r4, r6 + add #40, r6 + mov #0, r5 + mov #2, r4 + mov.l L1, r0 + bsrf r0 + nop +1: mov.l @r15+, r4 + lds.l @r15+, pr + +2: mov.l L2, r0 + braf r0 + nop +3: + +.align 2 +L1: .long pthread_sigmask@PLT-(1b-.) +L2: .long setjmp@PLT-(3b-.) diff --git a/src/thread/superh/__set_thread_area.s b/src/thread/superh/__set_thread_area.s new file mode 100644 index 00000000..53887e64 --- /dev/null +++ b/src/thread/superh/__set_thread_area.s @@ -0,0 +1,5 @@ +.global __set_thread_area +.type __set_thread_area, @function +__set_thread_area: + rts + ldc r4, gbr diff --git a/src/thread/superh/__unmapself.s b/src/thread/superh/__unmapself.s new file mode 100644 index 00000000..b34c3c80 --- /dev/null +++ b/src/thread/superh/__unmapself.s @@ -0,0 +1,22 @@ +.text +.global __unmapself +.type __unmapself, @function +__unmapself: + mov #91, r3 ! SYS_munmap + trapa #18 + + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + + mov #1, r3 ! SYS_exit + mov #0, r4 + trapa #17 + + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 diff --git a/src/thread/superh/clone.s b/src/thread/superh/clone.s new file mode 100644 index 00000000..d6c9184d --- /dev/null +++ b/src/thread/superh/clone.s @@ -0,0 +1,47 @@ +.text +.global __clone +.type __clone, @function +__clone: +! incoming: fn stack flags arg ptid tls ctid +! r4 r5 r6 r7 @r15 @(4,r15) @(8,r15) + + mov #-16, r0 + and r0, r5 + + mov r4, r1 ! r1 = fn + mov r7, r2 ! r2 = arg + + mov #120, r3 ! r3 = __NR_clone + mov r6, r4 ! r4 = flags + !mov r5, r5 ! r5 = stack + mov.l @r15, r6 ! r6 = ptid + mov.l @(8,r15), r7 ! r7 = ctid + mov.l @(4,r15), r0 ! r0 = tls + trapa #21 + + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + + cmp/eq #0, r0 + bt 1f + + ! we are the parent, return + rts + nop + +1: ! we are the child, call fn(arg) + jsr @r1 + mov r2, r4 + + mov #1, r3 ! __NR_exit + mov r0, r4 + trapa #17 + + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 diff --git a/src/thread/superh/syscall_cp.s b/src/thread/superh/syscall_cp.s new file mode 100644 index 00000000..5677b9c0 --- /dev/null +++ b/src/thread/superh/syscall_cp.s @@ -0,0 +1,39 @@ +.text +.global __syscall_cp_asm +.type __syscall_cp_asm, @function +__syscall_cp_asm: + +.global __cp_begin +__cp_begin: + mov.l @r4, r4 + tst r4, r4 + bt 2f + + mov.l L1, r0 + braf r0 + nop +1: + +.align 2 +L1: .long __cancel@PLT-(1b-.) + +2: mov r5, r3 + mov r6, r4 + mov r7, r5 + mov.l @r15, r6 + mov.l @(4,r15), r7 + mov.l @(8,r15), r0 + mov.l @(12,r15), r1 + trapa #22 + +.global __cp_end +__cp_end: + ! work around hardware bug + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + + rts + nop diff --git a/src/unistd/superh/pipe.s b/src/unistd/superh/pipe.s new file mode 100644 index 00000000..d865ae3a --- /dev/null +++ b/src/unistd/superh/pipe.s @@ -0,0 +1,27 @@ +.global pipe +.type pipe, @function +pipe: + mov #42, r3 + trapa #17 + + ! work around hardware bug + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + + cmp/pz r0 + bt 1f + + mov.l L1, r1 + braf r1 + mov r0, r4 + +1: mov.l r0, @(0,r4) + mov.l r1, @(4,r4) + rts + mov #0, r0 + +.align 2 +L1: .long __syscall_ret@PLT-(1b-.) |