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On 27 Dec 2016 23:25, Dimitar Dimitrov wrote: > The corresponding libgloss changes have not yet been mainlined. > The PRU patches are available here: > https://github.com/dinuxbg/gnupru/tree/for-next/patches/newlib-cygwin have you sent them to the mailing list ? i don't see them ... https://sourceware.org/ml/newlib/ > 2016-12-26 Dimitar Dimitrov <dimitar@dinux.eu> > > * sim/MAINTAINERS.tgt: Add myself as PRU maintainer. ChangeLog is relative to sim/, so should be "MAINTAINERS". also, this file doesn't have a .tgt suffix. > --- /dev/null > +++ b/sim/pru/interp.c > > +#ifndef NUM_ELEM > +#define NUM_ELEM(A) (sizeof (A) / sizeof (A)[0]) > +#endif use the standard ARRAY_SIZE from libiberty.h > +/* DMEM zero address is perfectly valid. But if CRT leaves the first word > + alone, we can use it as a trap to catch NULL pointer access. */ > +static int abort_on_dmem_zero_access; use bfd_boolean instead, and TRUE/FALSE values > +extract_regval (uint32_t val, uint32_t regsel) > +{ > ... > + default: sim_io_error(NULL, "invalid regsel"); space before the ( this comes up a few times in this file -- please fix them all > +pru_reg2dmem (SIM_CPU *cpu, uint32_t addr, unsigned int nbytes, > + int regn, int regb) > +{ > + /* GDB assumes unconditional access to all memories, so enable additional > + checks only in standalone mode. */ only one space before "in" > + bool standalone = (STATE_OPEN_KIND (CPU_STATE (cpu)) == SIM_OPEN_STANDALONE); > + > + if (standalone && abort_on_dmem_zero_access && addr < 4) i don't think you need the standalone check here. you already have the abort_on_dmem_zero_access check here. it'll work in gdb too. > +sim_step_once (SIM_DESC sd) > ... > + default: > + RAISE_SIGILL (); > + sim_io_eprintf (sd, "Unknown opcode.\n"); RAISE_SIGILL never returns, so this sim_io_eprintf is never shown, so you might as well delete it > +SIM_DESC > +sim_open (SIM_OPEN_KIND kind, host_callback *cb, > + struct bfd *abfd, char * const *argv) > ... > + sim_do_commandf (sd, "memory-region 0x%x,0x%x", > + 0, > + DMEM_DEFAULT_SIZE); > + sim_do_commandf (sd, "memory-region 0x%x,0x%x", > + 0x20000000, > + IMEM_DEFAULT_SIZE); in other sims, we check the memory map before we add this /* Allocate external memory if none specified by user. Use address 4 here in case the user wanted address 0 unmapped. */ if (sim_core_read_buffer (sd, NULL, read_map, &c, 4, 1) == 0) { ...do the sim_do_commandf call... } > --- /dev/null > +++ b/sim/pru/pru.h > > +/* (void)0 is a guard against using RD as a left-hand side value. */ > +#define RD (void)0; rd_is_modified = 1; _RDVAL the standard way to handle (void)0 is with a do{...}while(0) loop looks like you want to make a helper call macro anyways. something like #define FOO(x) do { ...; _RDVAL = x; } while (0) also, RD depends on _RDVAL which only exists inside a single func. this should be moved to interp.c i think for the one user. > +#define PC (cpu->pru_cpu.pc) use CPU ? > +#define PC_byteaddr ((cpu->pru_cpu.pc << 2) | PC_ADDR_SPACE_MARKER) use PC ? > +#define DO_SYSCALL() pru_sim_syscall(sd, cpu) you use this once. doesn't seem like a good use of a define. i.e. delete this and inline the code in the one call site. > +#define RAISE_SIGILL() sim_engine_halt (sd, NULL, NULL, PC_byteaddr, \ > + sim_signalled, SIM_SIGILL); > +#define RAISE_SIGINT() sim_engine_halt (sd, NULL, NULL, PC_byteaddr, \ > + sim_signalled, SIM_SIGINT); shouldn't you pass in cpu here ? drop the semi-colons too > +#define NUM_REGS 33 you've got a space then a tab. you should fix that. > +#define PCREG_NUM 32 > +#define INST_SIZE 4 you aren't using these. delete them ? > +/* Number of cycles spent for memory access. No distinction is currently > + made between SRAM, DRAM and generic L3 slaves. */ > +#define MEM_ACCESS_CYCLES 2 you only use this once. does it need to be a define ? > --- /dev/null > +++ b/sim/pru/pru.isa > > +INSTRUCTION (xchg, > + fprintf (stderr, "XCHG instruction not supported by sim\n"); > + RAISE_SIGILL ()) > + > +INSTRUCTION (sxin, > + fprintf (stderr, "SXIN instruction not supported by sim\n"); > + RAISE_SIGILL ()) > + > +INSTRUCTION (sxout, > + fprintf (stderr, "SXOUT instruction not supported by sim\n"); > + RAISE_SIGILL ()) > + > +INSTRUCTION (sxchg, > + fprintf (stderr, "SXCHG instruction not supported by sim\n"); > + RAISE_SIGILL ()) you should use sim_io_eprintf instead of fprintf -mike
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