26de4c1ab1
The new test rck_e.e segfaults on PowerPC unless I make some changes. The inline code for _rck_ was wrong because it didn't allow the trap handler to return. _sig_ forgot to push the old trap handler. Move plat/linuxppc/libsys/trap.s to mach/powerpc/libem/trp.s and rewrite it with simplified/extended mnemonics. Remove .trap alias for .trp procedure. Add a missing `mtspr lr, r0` so we can return from the trap handler. Call write() and _exit() so trp.s works with both linuxppc and osxppc. Before, Mac OS X was wrongly using the trap.s for Linux. In powerpc/libem, simplify .aar4; teach .csa and .csb to raise the trap if the default target is zero. C programs don't need these changes. You may relink your C programs with the changed .csa and .csb, but C code doesn't raise the trap. Modula-2 code can raise traps, so you may want to relink your Modula-2 programs with the changed libem, but you might keep your old .o files from Modula-2. You may need to recompile your Pascal programs (delete old .o files from Pascal) because the Pascal compiler might use _rck_.
187 lines
3.1 KiB
Plaintext
187 lines
3.1 KiB
Plaintext
#
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mes 2, EM_WSIZE, EM_PSIZE
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/*
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* Uses _rck_ for range checks. Catches the EM trap if a value is out
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* of range, and continues with the next instruction after _rck_.
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*
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* Some back ends, like i80, ignore _rck_, so this test fails.
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*/
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testnr
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con 1 ; test number
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caught
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con 0 ; number of caught traps
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inp $next
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inp $catch
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inp $never
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exp $_m_a_i_n
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pro $_m_a_i_n,0
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lim ; load ignore mask
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loc 2
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and EM_WSIZE ; check bit 1 << ERANGE
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zeq *1 ; fail if ignoring ERANGE
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.1
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rom 1I4
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lae .1
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loi 4
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cal $fail
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asp 4
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1
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cal $next ; increment testnr, catch next trap
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loc 10125
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.2
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rom 4283, 13644
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lae .2
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rck EM_WSIZE ; testnr 2 in range
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asp EM_WSIZE
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cal $next
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loc 4282
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lae .2
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rck EM_WSIZE ; testnr 3 out of range
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asp EM_WSIZE
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cal $next
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loc 4283
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lae .2
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rck EM_WSIZE ; testnr 4 in range
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asp EM_WSIZE
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cal $next
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loc 13644
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lae .2
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rck EM_WSIZE ; testnr 5 in range
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asp EM_WSIZE
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cal $next
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loc 13655
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lae .2
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rck EM_WSIZE ; testnr 6 out of range
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asp EM_WSIZE
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cal $next
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loc -13015
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.7
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rom -31344, -1898
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lae .7
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rck EM_WSIZE ; testnr 7 in range
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asp EM_WSIZE
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cal $next
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loc 8580
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.8
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rom -26315, 4588
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lae .8
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rck EM_WSIZE ; testnr 8 out of range
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asp EM_WSIZE
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; The last test raised a trap, so now there is no trap handler.
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lpi $never
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sig ; push old trap handler
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loc 0
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loc EM_WSIZE
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loc EM_PSIZE
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cuu ; push NULL pointer
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cmp
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zeq *17 ; fail unless old handler is NULL
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.17
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rom 17I4
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lae .17
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loi 4
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cal $fail
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asp 4
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17
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; Change the trap handler from $never to $catch.
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lpi $catch
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sig
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lpi $never
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cmp
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zeq *18
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.18
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rom 18I4
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lae .18
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loi 4
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cal $fail
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asp 4
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18
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; Begin ignoring range traps.
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loc 2 ; 1 << ERANGE
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sim
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loc 18
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ste testnr
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loc 8580
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lae .8
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rck EM_WSIZE ; testnr 18 out of range but ignored
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; Fail if we caught the wrong number of traps.
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loe caught
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loc 3
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beq *20
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.20
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rom 20I4
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lae .20
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loi 4
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cal $fail
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asp 4
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20
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cal $finished
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end
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pro $next,0
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ine testnr ; next test
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lpi $catch
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sig ; catch next EM trap (only one trap)
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asp EM_PSIZE
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ret 0
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end
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pro $catch,0
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ine caught ; count this trap
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lol 0 ; load trap number
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loc 1
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beq *1 ; fail if trap != ERANGE
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.101
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rom 257I4
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lae .101
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loi 4
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cal $fail
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; Wrong type of trap. _rtt_ might not work, so exit now.
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cal $finished
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1
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; Fail if the wrong test raised this trap.
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loe testnr
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loc 3
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beq *2
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loe testnr
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loc 6
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beq *2
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loe testnr
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loc 8
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beq *2
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loc 256
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loe testnr
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adi EM_WSIZE ; 0x100 + testnr
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loc EM_WSIZE
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loc 4
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cuu
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cal $fail
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asp 4
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2
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rtt ; return from trap handler
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end
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pro $never,0
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.200
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rom 200I4
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lae .200
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loi 4
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cal $fail
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asp 4
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rtt
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end
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