diff options
| author | Drahflow <drahflow@gmx.de> | 2015-06-16 10:18:09 +0200 |
|---|---|---|
| committer | Drahflow <drahflow@gmx.de> | 2015-06-16 10:18:09 +0200 |
| commit | bb1350d1d6c02b5b58fee760420ad7d132524ab9 (patch) | |
| tree | e955e2dfb42daa0df4f21823145b9ce7c3317459 | |
| parent | a30775351c5fa08293e087fdf650237c6c5e182a (diff) | |
Reduce number of program headers
... and evade a sanity check in Linux 4 (as if
there is anything sane about this project).
| -rw-r--r-- | compiler/elymasAsmLib.ey | 24 | ||||
| -rw-r--r-- | compiler/standardClient.ey | 1 |
2 files changed, 24 insertions, 1 deletions
diff --git a/compiler/elymasAsmLib.ey b/compiler/elymasAsmLib.ey index 0a327de..e193111 100644 --- a/compiler/elymasAsmLib.ey +++ b/compiler/elymasAsmLib.ey @@ -1245,7 +1245,28 @@ # rdi == target address # rsi == size in bytes - # record new block in global allocation list + # record new block in global allocation list (or enlarge existing block if some exists) + :globalAllocations .base /rax :movqImmReg + + # search existing block + /rax /rbp :movqRegReg + /rax /rbp :addqMemReg # rbp == address after last block entry + @searchAllocBlockLoop + 16 /rax :addqImm8Reg + /rax /rbp :cmpqRegReg + /createNewBlock :jbeLbl8 + + /rax /rcx :movqMemReg # rcx == start of existing block + 8 /rax /rcx :addqMemDisp8Reg # rcx == end of existing block + /rcx /rdi :cmpqRegReg + /enlargeExistingBlock :jzLbl8 + /searchAllocBlockLoop :jmpLbl8 + + @enlargeExistingBlock + /rsi 8 /rax :addqRegMemDisp8 # enlarge the block + /makeMmapCall :jmpLbl8 + + @createNewBlock :globalAllocations .base /rax :movqImmReg 16 /rax :addqImm8Mem /rax /rax :addqMemReg @@ -1253,6 +1274,7 @@ /rdi /rax :movqRegMem /rsi 8 /rax :movqRegMemDisp8 + @makeMmapCall SYSCALL .mmap /rax :movqImmReg # /rdi already fine # /rsi already fine diff --git a/compiler/standardClient.ey b/compiler/standardClient.ey index dcbb0e8..010e203 100644 --- a/compiler/standardClient.ey +++ b/compiler/standardClient.ey @@ -980,6 +980,7 @@ > -- /dump deffd # TODO: why do we save section information, exactly? +# FIXME: think real hard whether we can ignore the possibility of new allocations during freeze { ==filename # ==f (left on the stack a while and executed from sys .asm .programStart) sys .asm .patchProgramStart ==frozenAllocationCount |