similar to: Reducing code size of Position Independent Executables (PIE) by shrinking the size of dynamic relocations section

> We've taken the '.relr.dyn' section from Cary's prototype, and implemented a > custom encoding to compactly represent the list of offsets. We're calling the > new compressed section '.relrz.dyn' (for relocations-relative-compressed). I'd suggest just using .relr.dyn -- your encoding is straightforward enough that I'd just make that the standard

* Rahul Chaudhry via gnu-gabi: > The encoding used is a simple combination of delta-encoding and a > bitmap of offsets. The section consists of 64-bit entries: higher > 8-bits contain delta since last offset, and lower 56-bits contain a > bitmap for which words to apply the relocation to. This is best > described by showing the code for decoding the section: > > typedef

Sri and I have been working on this over the past few months, and we've made some good progress that we'd like to share and get feedback on. Our work is based on the 'experimental-relr' prototype from Cary that is available at 'users/ccoutant/experimental-relr' branch in the binutils repository [1], and was described earlier in this thread:

A simple combination of delta-encoding and run_length-encoding is one of the first schemes we experimented with (32-bit entries with 24-bit 'delta' and an 8-bit 'count'). This gave really good results, but as Sri mentions, we observed several cases where the relative relocations were not on consecutive offsets. There were common cases where the relocations applied to alternate

I'm having a curious issue with LLD/x86_64 linux/elf (Ubuntu 14.04); Where the l_addr of the link_map is invalid when linked with lld, but is fine with gnu ld. I'm using the libgc (boehm) code which when initializing reads the DYNAMIC/DEBUG link_map data, and crashes because the l_addr field has value out of readable memory. The strange this is that it happens only on some linux

Dear R-users, I am a new user for R. I am eager to lean about it. I wanted to read and summary of the a simple data file I used the following, rel <- read.table("C:/Documents and Settings/ashta/My Documents/R_data/rel.dat", quote="",header=FALSE,sep="",col.names= c("id","orel","nrel")) summary(rel) Below is the

Hi, Does anyone know of a function in R that can handle a fractional variable as the dependent variable? The catch is that the function has to be inclusive of 0 and 1, which betareg() does not. It seems like GLM might be able to handle the fractional logit model, but I can't figure it out. How do you format GLM to do so? Best, Rachael [[alternative HTML version deleted]]

Hi, I hope someone knows the answer to this or has a real good reference about it (I am using Legendre & Legendre, Numerical Ecology, 1998).... My data is a data.frame with locations as rows and vegetation assemblages / species as columns. I've done a PCA, a correspondance analysis (CA) using ca in ca package and a detrended correspondance analysis (DCA) using decorana from vegan package.

Dear colleages in R, I have earlier been working with R in Linux, where reading in a table containing Scandinavian letters ("?", "?", and "?") in the header as part of variable names has not caused any problem whatsoever. However, when trying to do the same in R running on new MacOS-X (with an Intel processor) with the same original text table does not seem to

Hii rstudio members I am learning rstudio, For my manuscript I am trying to plot CCA using species and environmental data. But I am getting error like Error in cca.default(sptrans, envtrans) : all row sums must be >0 in the community data matrix *My code is like * library(vegan) library(ggplot2) library(dplyr) rassspec<-read.csv("C:/Users/hp/Desktop/R_data/rassspec.csv",

Hello, I am making a boxplot of 13 boxes. I tried to color the box using 13 colors but failed. Only red and brown were displayed. Green, blue, and grey disappeared. Please kindly advise modification after checking the code below. Thank you in advance. Elaine R code # data input dataN <-read.csv("H:/a_mig_distance_B_NB/R_data/Mig_bird_586_20120925.csv",header=T, row.names=1)

Dear guRus, is there a package that calculates the Approximate Entropy (ApEn) of a time series? RSiteSearch only gave me a similar question in 2004, which appears not to have been answered: http://finzi.psych.upenn.edu/R/Rhelp02a/archive/28830.html RSeek.org didn't yield any results at all. Happy holidays (where appropriate), Stephan

The function "substitute" seems to fail to make a genuine substitution, although the printed verision seems fine. Here is an example. > m <- substitute(Y <- function(x) FUN(x+1), + list(Y = as.name("y"), FUN = as.name("sin"))) > m y <- function(x) sin(x + 1) > eval(m) > y function(x) FUN(x+1) However the story doesn't end there. The

Hello I ran the code below but it said: no object "'panel.xyplot.intermediate.hh'" Please kindly advise how to modify the code. thank you. (It works with panel.bwplot.intermediate.hh) Elaine code library(HH) # data input dataN <-read.csv("H:/R_data/Mig_bird_586.csv",header=T, row.names=1) dim(dataN) dataN[1,] str(dataN) diet.code <-

<font size="2">I''m working on a large Rails site and we want to move from RSpec 0.8.2 to the latest and greatest.&nbsp; So we ran the translator and yet we''re having a lot of trouble translating should_render.<br><br>I found this on the web:<br><br>We will NOT be supporting the following in the new syntax:<br>&nbsp;

> I think we should get rid of source attributes completely, > since they are no longer needed, but your comment still > applies to source references. We should strip them when code > gets modified. > > Duncan Murdoch I would be very concerned about losing source attributes-- it would break a lot of my code :(! It's very useful to have a single portable R object that

Hi folks, I'd like to propose adding a feature to ELF lld for automatically partitioning a program into multiple binaries. (This will also involve adding a feature to clang, so I've cc'd cfe-dev as well.) == Problem statement == Embedded devices such as cell phones, especially lower end devices, are typically highly resource constrained. Users of cell phone applications must pay a

Changes: - patch v2: - Adapt patch to work post KPTI and compiler changes - Redo all performance testing with latest configs and compilers - Simplify mov macro on PIE (MOVABS now) - Reduce GOT footprint - patch v1: - Simplify ftrace implementation. - Use gcc mstack-protector-guard-reg=%gs with PIE when possible. - rfc v3: - Use --emit-relocs instead of -pie to reduce

Changes: - patch v2: - Adapt patch to work post KPTI and compiler changes - Redo all performance testing with latest configs and compilers - Simplify mov macro on PIE (MOVABS now) - Reduce GOT footprint - patch v1: - Simplify ftrace implementation. - Use gcc mstack-protector-guard-reg=%gs with PIE when possible. - rfc v3: - Use --emit-relocs instead of -pie to reduce

These patches make the changes necessary to build the kernel as Position Independent Executable (PIE) on x86_64. A PIE kernel can be relocated below the top 2G of the virtual address space. It allows to optionally extend the KASLR randomization range from 1G to 3G. Thanks a lot to Ard Biesheuvel & Kees Cook on their feedback on compiler changes, PIE support and KASLR in general. Thanks to